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Ransburg – MCV Series – Service Manual – CS-01-01.8
- Ransburg - MCV Series - Service Manual - CS-01-01.8 [ English ]
carefully read SAFETY PRECAUTIONS, starting
on page 1, and all instructions in this manual.
Keep this Service Manual for future reference.
SERVICE MANUAL
CS-01-01.8
(Replaces CS-01-01.7)
March - 2013
MODEL(S): 78011-XX
MCV SERIES
MODULAR COLOR CHANGER
Service Manual Price: $30.00 (U.S.)
Ransburg
NOTE: This manual has been changed from CS-01-01.7 to revision CS-01-01.8. Reasons for this
change are noted under Manual Change Summary page 33 of this manual.
MCV Color Changer
CS-01-01.8
Ransburg
GENERAL MAINTENANCE ...................................................................................................14-15
79239-XX REGULATOR DISASSEMBLY / REASSEMBLY PROCEDURE ...........................16-17
REGULATOR REASSEMBLY PROCEDURE ........................................................................17
TEST AND CHECKOUT PROCEDURE FOR COLOR CHANGER .......................................18-19
SAFETY: 1-5
SAFETY PRECAUTIONS .......................................................................................................1
HAZARDS / SAFEGUARDS ...................................................................................................2-5
PAGE
INTRODUCTION: 6-9
CONTENTS
DESCRIPTION .......................................................................................................................6
SPECIFICATIONS ..................................................................................................................7
MCV PRE-ENGINEERED COLOR CHANGER ASSEMBLIES / PARTS LIST .....................8-9
MCV COLOR CHANGE MATRIX............................................................................................9
INSTALLATION: 10-11
MCV INSTALLATION PROCEDURES ...................................................................................10-11
OPERATION: 12-13
OPERATING ...........................................................................................................................12-13
MAINTENANCE: 14-19
PARTS IDENTIFICATION: 20-31
MCV COLOR CHANGER ASSEMBLY / PARTS LIST ........................................................... 20-21
78075-00 & 78075-02 BELL WASH ASSEMBLIES / PARTS LIST ........................................ 22
78075-01 & 78075-03 BELL WASH ASSEMBLIES / PARTS LIST......................................... 23
78070-00 BLOCK PURGE ASSEMBLY / PARTS LIST ......................................................... 24
MANIFOLD ASSEMBLY / PARTS LIST ................................................................................. 25
79239-XX REGULATOR ASSEMBLY / PARTS LIST ............................................................ 26-27
FLOW METER BLOCK ASSEMBLY / PARTS LIST .............................................................. 28
78949-00 VALVE & 77367-00 SEAT REPLACEMENT PARTS / PARTS LIST ...................... 29
77620-00 VALVE PLUG KIT (OPTIONAL ) / PARTS LIST .................................................... 29
78074-00 OUTLET BLOCK ASSEMBLY / PARTS LIST ........................................................ 30
78235-00 REGULATOR & FLOW METER STAND-ALONE ASSEMBLY............................... 31
79245-00 REGULATOR DR 2 STAND-ALONE...................................................................... 31
WARRANTY POLICIES: 32
LIMITED WARRANTY ............................................................................................................32
MCV Color Changer - Contents
CS-01-01.8
Ransburg
MCV Color Changer - Safety
CS-01-01.81
Ransburg
W A R N I N G!
W A R N I N G!
SAFETY
SAFETY PRECAUTIONS
Before operating, maintaining or servicing any
Ransburg electrostatic coating system, read and
understand all of the technical and safety liter-
ature for your Ransburg products. This manual
contains information that is important for you to
know and understand. This information relates to
USER SAFETY and PREVENTING EQUIPMENT
PROBLEMS. To help you recognize this informa-
tion, we use the following symbols. Please pay
particular attention to these sections.
A WARNING! states information to alert you
to a situation that might cause serious injury
if instructions are not followed.
A CAUTION! states information that tells how
to prevent damage to equipment or how to
avoid a situation that might cause minor injury.
A NOTE is information relevant to the proce-
dure in progress.
While this manual lists standard specifications
and service procedures, some minor deviations
may be found between this literature and your
equipment. Differences in local codes and plant
requirements, material delivery requirements,
etc., make such variations inevitable. Compare
this manual with your system installation draw-
ings and appropriate Ransburg equipment man-
uals to reconcile such differences.
Careful study and continued use of this manual
will provide a better understanding of the equip-
ment and process, resulting in more efficient
operation, longer trouble-free service and faster,
easier troubleshooting. If you do not have the
manuals and safety literature for your Ransburg
system, contact your local Ransburg represen-
tative or Ransburg.
�� The hazards shown on the following pag-
es may occur during the normal use of this
equipment. Please read the hazard chart be-
ginning on page 2.
�� The user MUST read and be familiar with
the Safety Section in this manual and the
Ransburg safety literature therein identified.
�� This manual MUST be read and thor-
oughly understood by ALL personnel who
operate, clean or maintain this equipment!
Special care should be taken to ensure that
the WARNINGS and safety requirements for
operating and servicing the equipment are
followed. The user should be aware of and
adhere to ALL local building and fire codes
and ordinances as well as NFPA-33 SAFE-
TY STANDARD, LATEST EDITION, prior
to installing, operating, and/or servicing this
equipment.
MCV Color Changer - Safety
CS-01-01.8 2
Ransburg
Spray Area
AREA
Tells where hazards
may occur.
HAZARD
Tells what the hazard is.
SAFEGUARDS
Tells how to avoid the hazard.
Fire Hazard
Improper or inadequate
operation and maintenance
procedures will cause a fire
hazard.
Protection against inadver-
tent arcing that is capable of
causing fire or explosion is
lost if any safety interlocks
are disabled during opera-
tion. Frequent Power Supply
or Controller shutdown indi-
cates a problem in the system
requiring correction.
Fire extinguishing equipment must be present in
the spray area and tested periodically.
Spray areas must be kept clean to prevent the
accumulation of combustible residues.
Smoking must never be allowed in the spray
area.
The high voltage supplied to the atomizer must
be turned off prior to cleaning, flushing or main-
tenance.
When using solvents for cleaning:
•• Those used for equipment flushing should
have flash points equal to or higher than
those of the coating material.
•• Those used for general cleaning must have
flash points above 100°F (37.8°C).
Spray booth ventilation must be kept at the rates
required by NFPA-33, OSHA, country, and local
codes. In addition, ventilation must be main-
tained during cleaning operations using flam-
mable or combustible solvents.
Electrostatic arcing must be prevented. Safe
sparking distance must be maintained between
the parts being coated and the applicator. A dis-
tance of 1 inch for every 10KV of output voltage
is required at all times.
Test only in areas free of combustible material.
Testing may require high voltage to be on, but
only as instructed.
Non-factory replacement parts or unautho-
rized equipment modifications may cause fire or
injury.
If used, the key switch bypass is intended for
use only during setup operations. Production
should never be done with safety interlocks dis-
abled.
Never use equipment intended for use in water-
borne installations to spray solvent based ma-
terials.
The paint process and equipment should be
set up and operated in accordance with NFPA-
33, NEC, OSHA, local, country, and European
Health and Safety Norms.
MCV Color Changer - Safety
CS-01-01.83
Ransburg
AREA
Tells where hazards
may occur.
HAZARD
Tells what the hazard is.
SAFEGUARDS
Tells how to avoid the hazard.
Spray Area
Improper operation or mainte-
nance may create a hazard.
Personnel must be properly
trained in the use of this equip-
ment.
Explosion Hazard
Improper or inadequate oper-
ation and maintenance proce-
dures will cause a fire hazard.
Protection against inadvertent
arcing that is capable of caus-
ing fire or explosion is lost if
any safety interlocks are dis-
abled during operation.
Frequent Power Supply or
Controller shutdown indicates
a problem in the system requir-
ing correction.
General Use and
Maintenance
Electrostatic arcing must be prevented. Safe
sparking distance must be maintained between
the parts being coated and the applicator. A dis-
tance of 1 inch for every 10KV of output voltage
is required at all times.
Unless specifically approved for use in hazard-
ous locations, all electrical equipment must be
located outside Class I or II, Division 1 or 2
hazardous areas, in accordance with NFPA-33.
Test only in areas free of flammable or combus-
tible materials.
The current overload sensitivity (if equipped)
MUST be set as described in the correspond-
ing section of the equipment manual. Protec-
tion against inadvertent arcing that is capable
of causing fire or explosion is lost if the current
overload sensitivity is not properly set. Fre-
quent power supply shutdown indicates a prob-
lem in the system which requires correction.
Always turn the control panel power off prior to
flushing, cleaning, or working on spray system
equipment.
Before turning high voltage on, make sure no
objects are within the safe sparking distance.
Ensure that the control panel is interlocked with
the ventilation system and conveyor in accor-
dance with NFPA-33, EN 50176.
Have fire extinguishing equipment readily avail-
able and tested periodically.
Personnel must be given training in accordance
with the requirements of NFPA-33, EN 60079-0.
Instructions and safety precautions must be
read and understood prior to using this equip-
ment.
Comply with appropriate local, state, and na-
tional codes governing ventilation, fire protec-
tion, operation maintenance, and housekeep-
ing. Reference OSHA, NFPA-33, EN Norms
and your insurance company requirements.
MCV Color Changer - Safety
CS-01-01.8 4
Ransburg
AREA
Tells where hazards
may occur.
HAZARD
Tells what the hazard is.
SAFEGUARDS
Tells how to avoid the hazard.
Spray Area /
High Voltage
Equipment
Electrical Discharge
There is a high voltage device
that can induce an electrical
charge on ungrounded objects
which is capable of igniting
coating materials.
Inadequate grounding will
cause a spark hazard. A
spark can ignite many coating
materials and cause a fire or
explosion.
Parts being sprayed and operators in the spray
area must be properly grounded.
Parts being sprayed must be supported on con-
veyors or hangers that are properly ground-
ed. The resistance between the part and earth
ground must not exceed 1 meg ohm. (Refer to
NFPA-33.)
Operators must be grounded. Rubber soled in-
sulating shoes should not be worn. Grounding
straps on wrists or legs may be used to assure
adequate ground contact.
Operators must not be wearing or carrying any
ungrounded metal objects.
When using an electrostatic handgun, operators
must assure contact with the handle of the ap-
plicator via conductive gloves or gloves with the
palm section cut out.
NOTE: REFER TO NFPA-33 OR SPECIFIC
COUNTRY SAFETY CODES REGARDING
PROPER OPERATOR GROUNDING.
All electrically conductive objects in the spray
area, with the exception of those objects re-
quired by the process to be at high voltage, must
be grounded. Grounded conductive flooring
must be provided in the spray area.
Always turn off the power supply prior to flush-
ing, cleaning, or working on spray system equip-
ment.
Unless specifically approved for use in hazard-
ous locations, all electrical equipment must be
located outside Class I or II, Division 1 or 2 haz-
ardous areas, in accordance with NFPA-33.
MCV Color Changer - Safety
CS-01-01.85
Ransburg
Toxic Substances Certain material may be harmful
if inhaled, or if there is contact
with the skin.
Follow the requirements of the Material Safety
Data Sheet supplied by coating material manu-
facturer.
Adequate exhaust must be provided to keep the
air free of accumulations of toxic materials.
Use a mask or respirator whenever there is a
chance of inhaling sprayed materials. The mask
must be compatible with the material being
sprayed and its concentration. Equipment must
be as prescribed by an industrial hygienist or
safety expert, and be NIOSH approved.
AREA
Tells where hazards
may occur.
HAZARD
Tells what the hazard is.
SAFEGUARDS
Tells how to avoid the hazard.
Electrical
Equipment
Electrical Discharge
High voltage equipment is uti-
lized in the process. Arcing
in the vicinity of flammable or
combustible materials may oc-
cur. Personnel are exposed to
high voltage during operation
and maintenance.
Protection against inadvertent
arcing that may cause a fire or
explosion is lost if safety circuits
are disabled during operation.
Frequent power supply shut-
down indicates a problem in the
system which requires correc-
tion.
An electrical arc can ignite coat-
ing materials and cause a fire or
explosion.
Unless specifically approved for use in hazard-
ous locations, the power supply, control cabinet,
and all other electrical equipment must be locat-
ed outside Class I or II, Division 1 and 2 hazard-
ous areas in accordance with NFPA-33 and EN
50176.
Turn the power supply OFF before working on
the equipment.
Test only in areas free of flammable or combus-
tible material.
Testing may require high voltage to be on, but
only as instructed.
Production should never be done with the safety
circuits disabled.
Before turning the high voltage on, make sure no
objects are within the sparking distance.
Explosion Hazard –
Incompatible Materials
Halogenated hydrocarbon sol-
vents for example: methylene
chloride and 1,1,1,-Trichlo-
roethane are not chemically
compatible with the aluminum
that might be used in many sys-
tem components. The chemical
reaction caused by these sol-
vents reacting with aluminum
can become violent and lead to
an equipment explosion.
Aluminum is widely used in other spray appli-
cation equipment - such as material pumps,
regulators, triggering valves, etc. Halogenated
hydrocarbon solvents must never be used with
aluminum equipment during spraying, flushing,
or cleaning. Read the label or data sheet for the
material you intend to spray. If in doubt as to
whether or not a coating or cleaning material is
compatible, contact your coating supplier. Any
other type of solvent may be used with aluminum
equipment.
Spray Area
INTRODUCTION
DESCRIPTIONS
The MCV Color Changer is a material valve
stack used to control material flow to an applicator
or other material supply equipment. The stack
assembly is made up of several sub-assembled
stacks which are then connected together.
A description of stacks are as follows:
• Attached Bell Wash Module - These may
be attached to the main stack. Both avail-
able assemblies contain external check
valves on the inlet parts to prevent back
flow of material.
• Stand Alone Bell Wash Module - These
may be mounted seperatly away from the
stack assembly. An external outlet port is
included to provide a connection to an
applicator or other such device. Both
available assemblies contain external
check valves on the inlet ports to prevent
back-flow of material.
• 2 - Color Block Module
• 4 - Color Block Module
• 8 - Color Block Module
• Inline DR-2 Regulator with performance
matching the industry standard
Ransburg DR-1 regulator
• Flow Meter Module for use with bottom
ported fluid flow meters.
The 78949-00 Microvalve was designed to trigger
up to 2-million cycles. The fluid and air sections
are separated by a weep port to prevent contam-
ination between air and fluid.
NOTES
MCV Color Changer - Introduction
CS-01-01.8 6
Ransburg
SPECIFICATIONS
Average Flow
Rate: 202 fl. oz./6000cc per min
@80 psi (50 centipoise)
Maximum Number
of Colors: 32
Construction
Materials: Stainless Steel UHMW
DR-2 Regulator
Air Pressures: Variable by Control
(Manual or Automatic)
100 psi (7 bar max.)
Fluid Input: 300 psi (20.7 bar max.)
(10 psi min. above output
pressure)
Fluid Output: Variable by Ratio
Pneumatic Connections
Air Pilot: 1/8 NPT (F) Thread (Cap)
#10-32 (F) Thread (Plate)
Volume of Paint Held
Within Regulator: 5 cc
2-Color Modular Changer
Size: 4 wide (10.16cm)
3 3/4 High (9.53cm)
1 1/4 Long (3.8cm)
Weight: 0.98 lbs. (0.44 Kg)
16-Color Modular Changer
Size: 4 Wide (10.16cm)
3 3/4 High (9.53cm)
12 1/4 Long (31.1cm)
Weight: 9.8 lbs. (4.45 Kg)
Operating Pressure:
Fluid 300 psi max.
(20.68 bar)
Operating Temperature
Range: 55°F (12.8°C)
130°F (54°C)
Actuation Tube: 5/32 (4mm) OD
Air Actuating
Pressure: 75-120 psi (5.2-8.3 bar)
Electrical / Physical
Regulator Performance
The 78239-XX regulator performance matches that of the stand-alone DR-1. Figures X and Y show
the performance curves associated with the 78239-XX regulator.
Figure X Figure Y
MCV Color Changer - Introduction
CS-01-01.87
Ransburg
Figure 1: MCV Pre-Engineered Color Changer Assemblies
MCV PRE-ENGINEERED
COLOR CHANGER
ASSEMBLIES
The following is for pre-engineered color
changer assemblies. Please reference MCV
Color Changer Matrix for the changer assembly
number.
MCV Color Changer - Introduction
CS-01-01.8 8
Ransburg
Model No. 78011 - XX X X X X X X X
1 78077-00 Check Valve Assembly
2 78075-00 Attached Cup Wash Assembly with 2 Check Valves
3 78070-00 Purge Valve Assembly with 2 Check Valves
4 78071-00 2-Color Block Assembly
5 78072-00 4-Color Block Assembly
6 78073-00 8-Color Block Assembly
7 79239-XX DR-2 Regulator Assembly
8 78076-00 Flow Meter Block Less Flow Meter
9 78074-00 Outlet Block Assembly
10 77957-00 Retaining Clip, Color Changer
11 78078-00 Tool, Retaining Clip Removal
13 78099-00 Inlet Plug Assembly
14 78069-00 Fluid Regulator Inlet Tube
15 78114-00 Coupling, 1/4 NPS (F) X 3/8 NPS (F)
16 74151-XX DR-1 Fluid Regulator (See DR-1Regulator Service Manual for details)
17 A10756-00 Tool, Valve Removal
18 78096-00 3/8 NPS (F) X CAP
19 A10766-00 Tool, Valve Seat Removal
20 78098-00 1/8 NPT (M) X 3/8 NPS (M)
21 78097-00 3/8 NPS (M) X 3/8 NPS (F), 90° Elbow
22 75955-06 AW Flow Meter - Consult Sales Rep. for Pick-Up
Item #
MCV COLOR CHANGER - PARTS LIST (Figure 1)
Part # Description
Denotes Color Selector Including:
1 Solvent Air Purge Assembly (78070)
2 Check Valve Assembly (78077)
1 Outlet Assembly (78074)
Fluid Regulator DR-2 Type:
0 = No Regulator 4 = 1:4 Ratio
1 = 1:1 Ratio 5 = 1:6 Ratio
2 = 1:2 Ratio 6 = 1:8 Ratio
3 = 1:3 Ratio 7 = 1:10 Ratio
4 = 1:4 Ratio
Flow Meter Type:
0 = No Flow Meter
1 = Block With Flow Meter Attached
2 = Block With No Flow Meter
Fluid Regulator DR-1 Type:
0 = No Regulator 4 = 1:4 Ratio
1 = 1:1 Ratio 5 = 1:6 Ratio
2 = 1:2 Ratio 6 = 1:8 Ratio
3 = 1:3 Ratio 7 = 1:10 Ratio
Air Push Assembly (Assemblies
consist of Color Valve, Check
Valve, Regulator, Gage & Fitting):
0 = No Air Push Assembly
1 = 1 Air Push Assembly
2 = 2 Air Push Assemblies
Attached Cup Wash Assembly:
0 = None
1 = One Assembly (78075-00)
Number of Colors:
(Maximum of 32 Colors)
Fluid Fitting:
0 = 3/8 NPS Fitting
MCV COLOR CHANGER MATRIX:
Fluid Supply:
0 = Circulating Paint Supply
1 = Dead Headed
2 = Dead Headed With Check Valves
(78077 Assembly)
MCV Color Changer - Introduction
CS-01-01.89
Ransburg
MCV INSTALLATION
PROCEDURES
Determine Location For Color
Changer
The color changer should be located as close as
possible to the spray device in order to save paint
and solvent with a color changer. If possible, use
an enclosure to protect the color changer from
airborne paints and solvents.
Calculate Footprint Of Color
Changer (See Figure 2)
To calculate the footprint of the color changer add:
• The dimension of the purge assembly
• The dimension(s) of the module(s) used to cre-
ate the desired number of color valves
• The dimensions of control devices (regulator
and flow meter)
• The dimension of the output assembly
Example: To calculate the footprint of an 8-color
MCV Assembly:
2 (purge assembly) + 4 7/8 (8-color valve as-
sembly) + 3/4 (output assembly) = 7 5/8
INSTALLATION
Figure 2: Calculating Footprint of Color Changer Example
NOTE
> If using the optional flow meter block,
include dimension (3) in calculation.
2 11
4 2 7
16 47
8
3 2 7
16
3
4
PURGE ASS'Y.
78070-00
2 COLOR ASS'Y.
78071-00
4 COLOR ASS'Y.
78072-00
8 COLOR ASS'Y.
78073-00 2:1 REGULATOR ASS'Y.
79239-XX
ASS'Y.
FLOW METER BLOCK
78076-00
ASS'Y.
OUTLET BLOCK
78074-00
21 3 4
MCV Color Changer - Installation
CS-01-01.8 10
Ransburg
Mounting The Color Changer
There are three mounting configurations as fol-
lows (reference Figure 3):
• 5/16 clearance holes for flush mounting to
the booth wall
• 1/4 x 20 threaded holes in the end blocks
• 1/4 x 20 threaded holes in the back of the
end blocks
Figure 4: Grounding the Color Changer
Grounding of the Color Changer
For safety, the color changer MUST be grounded.
Using a 12-gauge wire, ground the output plate of
the color changer to a true earth ground. Using
an ohm meter, check for ground, testing the earth
ground to the purge assembly top plate. The
resistance should be 10 ohms or less.
Figure 3: Mounting Configurations Footprint
> The color changer MUST be properly
grounded. Proper grounding (as described
below) will prevent static charge buildup and
possible discharge from the color changer.
W A R N I N G!
1/4-20 UNC - 2B
1/4-20 UNC - 2B
78074-00
OUTLET
ASS'Y.
78070-00
PUREGE ASS'Y.
EARTH GROUND
(TRUE)
OHMS
010
PURGE ASS'Y.
TOP PLATE
MCV Color Changer - Installation
CS-01-01.811
Ransburg
S
olvent
C
olor 1 IN
M
ain A
ir
Flow Meter
Fluid
Regulator
MCV Color Selector
Spray
Device
C
olor 1 O
U
T
C
olor 2 IN
C
olor 2 O
U
T
Figure 5: Color Changer Schematics
OPERATING
The changer consists of modules stacked on
top of each other with each module allowing two
material selections. Modules may be added
or removed from the assembly as desired; the
user need only purchase the appropriately sized
changer. If, for instance, the number of required
materials increases, the changer can be expand-
ed by adding more modules. Also, each module
can be individually serviced. (Recommended
for use with waterborne or solventborne paints.)
Figure 5 shows typical color changer schematics
to prevent back flow of material.
OPERATION
MCV Color Changer - Operation
CS-01-01.8 12
Ransburg
Air Pilot Hose
Each color changer valve requires a 5/32 (4mm)
pilot hose to activate the color valve. This is a
push to lock connection and no hose termination
is required.
Fluid Output Hose
The fluid output hose of the color changer has
a 3/8 NPS (M) Fitting. For safety and solvent
savings it is recommended that a hose be used
between the color changer and the spray device.
Figure 6: Hose Feature Locations
Weep Ports
Weep ports for the microvalve are located in each
slice of the color changer. These ports will al-
low any fluid to exit the valve block should a seal
failure occur. If fluid is present outside this port,
maintenance will be required on the microvalve.
Fluid Inlet Circulating Hoses
A fluid hose connects to the 3/8 NPS (M) fitting
on each IN and OUT tube of the color changer. It
is recommended that a 1/4 to 3/8 ID nylon hose
be used for these connections. Each hose ter-
mination for connection to the stack must have a
3/8 NPS (F) swivel connection.
NOTE
> IN and OUT hoses CAN be reversed
on the color changer since ports are tied
together.
MCV Color Changer - Operation
CS-01-01.813
Ransburg
MAINTENANCE
Figure 8: Valve and Seat Removal Tools
> Prior to servicing the unit, insure that all
fluid pressure is relieved to atomsphere. A
solvent purge should be performed if pos-
sible.
W A R N I N G!
GENERAL MAINTENANCE
Removing A Valve From A Module
NOTE
> When replacing or repairing any compo-
nents in this system, before reassembling,
apply a light coat of food grade
petroleum jelly to all o-rings.
1. Tighten the shut-off valve in the clockwise di-
rection until the shut-off valve completely bottoms
out.
NOTE
> This procedure allows valve and/or seat
removal without removing the valve slice
from assembly.
2. Remove the valve (78949-00) and/or seat
(77367-00) using the valve removal (A10756-00)
and seat removal (A10766-00) tools.
3. Replace valves and/or seats as necessary.
4. Torque the valve seats to 15-20 lbs•in.
5. Tighten the valve to 15-20 lbs•in.
MCV Color Changer - Maintenance
CS-01-01.8 14
Ransburg
> Be careful of residual fluid pressure or
solvent pressure in the line. Cover over the
area where the valve slice is being removed
to prevent any solvent or paint from spraying
on you.
W A R N I N G!
> Prior to servicing the unit, insure that all
fluid pressure is relieved to atomsphere. A
solvent purge should be performed if pos-
sible.
W A R N I N G!
1. Insure all pressure is bled off the system. If
possible, flush the block with appropriate solvent.
2. Using the clip removal tool (78078-00), push
on the installed locking clip with the V cut as
shown in Figure 9.
3. Push the locking clips out of the locking slots.
4. Loosen and remove any mounting bolts hold-
ing the stack in place.
5. Carefully pull the stack assembly ends apart
and remove the valve block.
6. Replace the valve slice, push the assembly
together and insert the locking clips.
Removing/Adding A Valve Slice
Figure 9: Slice Removal
MCV Color Changer - Maintenance
CS-01-01.815
Ransburg
Figure 10: 79239-XX Regulator Disassembly / Reassembly
1
6
7
3
11
13
9
4
10
4
14
8
5
6
16
17
2
MCV Color Changer - Maintenance
CS-01-01.8 16
Ransburg
REGULATOR DISASSEMBLY
PROCEDURE
NOTE
> The seat and stem are matched sets
of parts, each having a serial number
engraved on them. Care must be taken
not to mix non-matching seats and stems
or the regulator will not perform properly.
1. Remove eight (8) screws [11] using a 5/32
Allen wrench.
2. Pull cap [7], upper diaphragm [6], and plate
[3] from the assembly.
3. Pull diaphragm assembly [2] from the assem-
bly.
4. Using a 3/16 Allen wrench, remove the regu-
lator insert. By removing the insert, the seat wil
be removed. To remove the carbide seat from the
insert, blow compressed air in the hex end of the
insert and the carbide seat will come out.
REGULATOR REASSEMBLY
PROCEDURE
1. Install all removed o-rings on the insert and
the seat. Push the seat into the insert straight in,
using an arbor press if possible.
2. Insert spring [5], seat [6], and one o-ring [4]
into the regulator body [1].
3. Using a 3/16’ Allen wrench, tighten the insert
down until it bottoms out.
4. Locate the dot on the diaphram assembly [2]
and place it so it is 180° from the outlet hole of
the body.
5. Add plate [3], upper diaphragm [6], and cap
[7]. Tighten the eight (8) screws [11] in a cross
pattern to 10 lbs•in. Then follow by tightening
each screw in a circular pattern to 20 lbs•in.
Figure 11: Diaphragm Assembly Position
MCV Color Changer - Maintenance
CS-01-01.817
Ransburg
NOTE
> Ensure valve is closed when completed.
NOTE
> The piston rod on the top of the color
valve assembly should EXTEND and air
should blow out of the color changer outlet.
Check for a crisp and sharp actuation of
the color valve air cylinder.
NOTE
> The piston rod on the top of the color
valve assembly should be RETRACTED,
and the air should have stopped blowing
out of the outlet of the color changer.
NOTE
> If bubbles are observed, dismantle color
changer manifold and repair as required.
7. Connect a 1/4 (6.4 cm) ID hose, 3 ft. (91.4cm)
long to the outlet of the color changer.
TEST AND CHECKOUT
PROCEDURE FOR COLOR
CHANGER
Step 1:
1. Connect air line to a regulated air supply.
2. Attach the air line to a ball valve assembled to
the outlet of the color changer.
3. Adjust the air supply pressure to 100 psi
(6.9 bar).
4. Open the ball valve at the outlet of the color
changer.
5. Apply a soap solution on the color changer
manifold.
6. Check the manifold assembly’s mating sur-
faces between color blocks for soap bubbles.
7. If no bubbles are present, rinse manifold with
water and blow dry with air.
Step 2:
1. Attach two (2) regulated air supply hoses,
one with a 3-way valve (normally closed) for
operating the color valve cylinder on the color
changer. (Set the pressure of the 3-way valve
at 75 psi (5.8 bar) or more.)
The second hose will be used for supplying 100
psi (6.9 bar) of air to the color inlet port of each
color changer valve.
2. Connect the air supply hose with 100 psi (6.9
bar) to color inlet valve. Connect a 2-way ball
valve to the matching return port on the color
changer manifold.
3. Turn the ball valve installed on the paint circu-
lation fitting to verify recirculation ability.
4. Connect the air supply with a 3-way valve
(normally closed) to the color valve cylinder.
5. Activate the 3-way valve to operate the color
valve.
6. Deactivate the 3-way valve and close the
color valves.
MCV Color Changer - Maintenance
CS-01-01.8 18
Ransburg
> NEVER wrap the equipment in plastic to
keep it clean. A surface charge may build-up
on the plastic surface and discharge to the
nearest grounded object. Efficiency of the
equipment will also be reduced and damage
or failure of the equipment’s components
may occur. WRAPPING THE EQUIPMENT
in plastic will void warranty.
W A R N I N G!
Figure 12: Ground Test
8. Acquire a container of water and fill it with about
4 (10.6cm) of WATER.
Position the hose in the container filled with water.
9. There should be no more than 6 bubbles per
minute coming from the outlet of the hose that is
submerged.
10. If there are more than 6 bubbles per minute,
remove the color valve assemby, replace the
valve seat (77367-00), and reinstall color valve
assembly. If the new seat does not correct the
problem, either the manifold block or color valve
assembly is defective.
11. Proceed to the next color valve and repeat
Steps 2 thru 11.
12. When all the color valves are checked out,
then check the purge valve assembly, repeating
Steps 2 thru 11.
13. Once all valves are operational, deactivate
the 3-way valve, and then disconnect the air lines
used for testing from the color changer.
14. With an ohm meter, check for conductivity
between the top plate of the purge valve and
the output plate on the color changer. There
should be 10 ohms or less between the two points.
(Reference Figure 12)
> ALWAYS test color changer for con-
ductivity after assembly or repair. Proper
conductivity is required to assure entire
color changer can be properly grounded
when installed.
W A R N I N G!
EARTH GROUND
(TRUE)
OHMS
010
PURGE ASS'Y.
TOP PLATE
MCV Color Changer - Maintenance
CS-01-01.819
Ransburg
Figure 13: MCV Color Changer Assembly
PARTS IDENTIFICATION
5
6
7
2
4
1
3
10
9
8
MCV Color Changer - Parts Identification
CS-01-01.8 20
Ransburg
TABLE A
79239-XX REGULATOR ASSEMBLY
Description
DR 2 - 1:1 Ratio
DR 2 - 1:2 Ratio
DR 2 - 1:3 Ratio
DR 2 - 1:4 Ratio
DR 2 - 1:6 Ratio
DR 2 - 1:8 Ratio
DR 2 - 1:10 Ratio
EE
79239-01
79239-02
79239-03
79239-04
79239-06
79239-08
79239-10
Item #
MCV COLOR CHANGER ASSEMBLY - PARTS LIST
(Figure 13)
Part # Description Qty
1 78075-00 Cup Wash Assembly, Attached 1
78075-02 Cup Wash Assembly, Attached with Plug 1
2 78070-00 Valve, Purge Assembly 1
3 78071-00 2-Color Valve Assembly 1
4 78072-00 4-Color Valve Assembly 1
5 78073-00 4-Color Valve Assembly 1
6 Table A - EE Assembly, DR-2 Regulator 1
7 78076-00 Assembly, Flow Meter Block 1
8 75955-06 AW Flow Meter - Consult Sales Rep. for Pick-Up 1
9 78074-00 Outlet Block Assy. 1
10 78075-01 Cup Wash Assembly, Detached 1
78075-03 Cup Wash Assembly, Detached (With Plug) 1
MCV Color Changer - Parts Identification
CS-01-01.821
Ransburg
Figure 14: 78075-00 & 78075-02 Bell Wash Assemblies
1 78093-00 Assembly Fitting Plate B Assembly 1
2 78949-00 Assembly, Valve 2
3 77367-00 Assembly, Valve Seat 2
4 78074-00 Outlet Block Assembly 1
79001-06 O-Ring, Solvent Proof (Included with 78074) 1
5 77952-00 Body, Valve Purge 1
6 77950-00 Shutoff Valve 2
7 79001-16 O-Ring, Solvent Proof 2
8 79001-14 O-Ring, Solvent Proof 4
9 7554-115 O-Ring, Solvent Resistant 2
10 78077-00 Check Valve, 3/8 NPS (F) X 3/8 NPS (M) 2
11 7959-16c Screw, 1/4-20 X 3/4 Long, SHCS 6
12 78096-00 Cap, 3/8 NPS (F) 1
13 79001-05 O-Ring, Solvent Proof 1
14 77957-00 Retaining Cup, Color Changer 2
15 77964-00 Mounting Plate, Cup Wash 1
Item #
78075-00 & 78075-02 BELL WASH ASSEMBLIES -PARTS LIST (Figure
14)
Part # Description Qty
1
11
11
15
12
11
6
6
7
7
9
8
9
8
8
3
2
14
3
2
4
13
5
10
10
MCV Color Changer - Parts Identification
CS-01-01.8 22
Ransburg
1 78092-00 Assembly Fitting Plate B Assembly 1
2 78949-00 Assembly, Valve 2
3 77367-00 Assembly, Valve Seat 2
4 78074-00 Outlet Block Assembly 1
4A 79001-06 O-Ring, Solvent Proof (Included with 78074-00) 1
5 77952-00 Body, Valve Purge 1
6 77950-00 Shutoff Valve 2
7 79001-16 O-Ring, Solvent Proof 2
8 79001-14 O-Ring, Solvent Proof 4
9 7554-115 O-Ring, Solvent Resistant 2
10 78077-00 Check Valve, 3/8 NPS (F) X 3/8 NPS (M) 2
11 7959-16C Screw, 1/4-20 X 3/4 Long, SHCS 2
12 78096-00 Cap, 3/8 NPS (F) 1
13 79001-05 O-Ring, Solvent Proof 1
14 77957-00 Retaining Cup, Color Changer 2
Item #
78075-01 & 78075-03 BELL WASH ASSEMBLIES -PARTS LIST (Figure 15)
Part # Description Qty
Figure 15: 78075-01 & 78075-03 Bell Wash Assemblies
12
1
11
11
6
6
7
7
8
9
2
3
3
4
5
9
8 5
14
13
10
10
MCV Color Changer - Parts Identification
CS-01-01.823
Ransburg
Figure 16: 78070-00 Block Purge Assembly
1 78092-00 Assembly Fitting Plate B Assembly 1
2 78949-00 Assembly, Valve 2
3 77367-00 Assembly, Valve Seat 2
4 77952-00 Body, Valve Purge 1
5 77950-00 Shutoff Valve 2
6 79001-16 O-Ring, Solvent Proof 2
7 79001-14 O-Ring, Solvent Proof 4
8 7554-115 O-Ring, Solvent Resistant 2
9 78077-00 Check Valve, 3/8 NPS (F) X 3/8 NPS (M) 2
10 7959-16c Screw, 1/4-20 X 3/4 Long, SHCS 2
11 78096-00 Cap, 3/8 NPS (F) 1
12 79001-05 O-Ring, Solvent Proof 1
13 77957-00 Retaining Clip, Color Changer 2
Item #
78070-00 BLOCK PURGE ASSEMBLY - PARTS LIST (Figure 16)
Part # Description Qty
1
11
10
5
5
7
6
6
8
8
12
43
2
2
7
7
9
9
3
13
MCV Color Changer - Parts Identification
CS-01-01.8 24
Ransburg
Figure 17: Manifold Assembly
Note: Below are per 2 valve color slice quantities.
1 A10458-02 Assembly, Block MCV Stack 2-Color 1
A10458-04 Assembly, Block MCV Stack 4-Color
A10458-08 Assembly, Block MCV Stack 8-Color
1A 79001-05 O-Ring, Solvent Proof (Included with Block Assembly) 1
1B 79001-06 O-Ring, Solvent Proof (Included with Block Assembly) 1
1C 77957-00 Retaining Clip, Color Changer 2
Item #
MANIFOLD ASSEMBLY - PARTS LIST (Figure 17)
Part # Description Qty
2 77367-00 Assembly, Valve Seat 2
3 78949-00 Assembly, Valve 2
4 78068-00 Assembly, Fitting Plate Color Valve 1
5 7554-115 O-Ring, Solvent Resistant 2
6 7959-16c Screw, 1/4-20 X 3/4 Long, SHCS 2
7 77950-00 Shutoff Valve 2
8 79001-16 O-Ring, Solvent Proof 2
9 79001-04 O-Ring, Solvent Proof 4
Item # Part # Description Qty
1
1
5
5
1B
1A
8
7
9
3
2
3
2
1
8
7
9
6
4
MCV Color Changer - Parts Identification
CS-01-01.825
Ransburg
Figure 18: 79239-XX Regulator Assembly
3
13
6
5
8
2
11
7
17
16
1
14
4
2
9
10
6
MCV Color Changer - Parts Identification
CS-01-01.8 26
Ransburg
1 79236-00 Assembly, Regulator Block 1
2 See Table A - A Assembly, Diaphragm DR-2 1
3 See Table A - B Assembly, Manifold Plate 1
4 79001-08 O-Ring, Solvent Proof 2
5 77354-00 Needle and Seat Lapped Set 1
6 74157-03 Diaphragm, Regulator 1
7 79231-00 Cap, Fluid Regulator 1
8 79001-05 O-Ring, Solvent Proof 1
9 79238-00 Insert, Regulator 1
10 79001-18 O-Ring, Solvent Proof 1
11 LSFA0006-40F 1/4-20 X 1 1/4 Lg. SHCS 8
12 74161-00 Spring, Regulator 1
13 14157-04 Fitting, 14 ODT X 1/8 NPT (M) 1
14 79001-06 O-Ring, Solvent Proof 1
16 72135-00 Gasket 1
17 7892-12 Fitting, 1/4 ODT X 10-32 1
TABLE A
79239-XX REGULATOR ASSEMBLY
01
02
03
04
06
08
10
Dash
No. Description
Regulator Ratio 1:1
Regulator Ratio 1:2
Regulator Ratio 1:3
Regulator Ratio 1:4
Regulator Ratio 1:6
Regulator Ratio 1:8
Regulator Ratio 1:10
B
A11067-01
A11067-02
A11067-03
A11067-04
A11067-06
A11067-08
A11067-10
A
79235-01
79235-02
79235-03
79235-04
79235-06
79235-08
79235-10
Item #
79239-XX REGULATOR ASSEMBLY - PARTS LIST (Figure 18)
Part # Description Qty
MCV Color Changer - Parts Identification
CS-01-01.827
Ransburg
1 A10467-00 Assembly, Flowmeter Plate 1
2 A10458-FM Flow Meter Body Assembly 1
2A 79001-05 O-Ring, Solvent Proof (Included with Block Assembly) 1
2B 79001-06 O-Ring, Solvent Proof (Included with Block Assembly) 1
3 79001-05 O-Ring, Solvent Proof 4
4 78232-16C Screw, Counter Sunk Head 6
5 77957-00 Retaining Clip, Color Changer 2
Item #
FLOW METER BLOCK ASSEMBLY - PARTS LIST (Figure 19)
Part # Description Qty
Figure 19: Flow Meter Block Assembly
3
3
3
5
5
5
1
7
MCV Color Changer - Parts Identification
CS-01-01.8 28
Ransburg
1 7924400 Plug 1
2 79001-19 O-Ring, Solvent Proof 1
3 79001-14 O-Ring, Solvent Proof 1
4 77618-00 Plug, Seat 1
Item #
77620-00 VALVE PLUG KIT (Optional)
(Use in place of Valve & Seat) (Figure 20b)
Part # Description Qty
1 79001-01 O-Ring, Solvent Proof 1
2 79001-02 O-Ring, Solvent Proof 2
3 79001-14 O-Ring, Solvent Proof 1
Item #
78949-00 VALVE & 77367-00 SEAT REPLACEMENT PARTS (Figure 20a)
Part # Description Qty
Figure 20a: 78949-00 Valve and 77367-00 Seat Replacement parts
Figure 20b: 77620-00 Valve Plug Kit (Optional)
3
2
1
2
MCV Color Changer - Parts Identification
CS-01-01.829
Ransburg
1 77956-00 Outlet Block 1
2 79001-06 O-Ring, Solvent Proof 1
3 78079-00 Fitting 1
Item #
78074-00 OUTLET BLOCK ASSEMBLY (Figure 21)
Part # Description Qty
Figure 21: 78074-00 Outlet Block Assembly
2
1
3
MCV Color Changer - Parts Identification
CS-01-01.8 30
Ransburg
Figure 22: 78235-00 Regulator & Flow Meter Stand-Alone Assembly
Figure 23: 79245-00 Regulator DR 2 Stand-Alone
MCV Color Changer - Parts Identification
CS-01-01.831
Ransburg
WARRANTY POLICIES
LIMITED WARRANTY
Ransburg will replace or repair without charge
any part and/or equipment that fails within the
specified time (see below) because of faulty work-
manship or material, provided that the equipment
has been used and maintained in accordance with
Ransburg’s written safety and operating instruc-
tions, and has been used under normal operating
conditions. Normal wear items are excluded.
THE USE OF OTHER THAN RANSBURG AP-
PROVED PARTS VOIDS ALL WARRANTIES.
SPARE PARTS: One hundred and eighty (180)
days from date of purchase, except for rebuilt
parts (any part number ending in R) for which
the warranty period is ninety (90) days.
EQUIPMENT: When purchased as a complete
unit, (examples: guns, power supplies, control
units, etc.), is one (1) year from date of purchase.
WRAPPING THE APPLICATOR, ASSOCIATED
VALVES AND TUBING, AND SUPPORTING
HARDWARE IN PLASTIC, SHRINK-WRAP,
OR ANY OTHR NON-APPROVED COVERING,
WILL VOID THIS WARRANTY.
RANSBURG’S ONLY OBLIGATION UNDER
THIS WARRANTY IS TO REPLACE PARTS
THAT HAVE FAILED BECAUSE OF FAULTY
WORKMANSHIP OR MATERIALS. THERE ARE
NO IMPLIED WARRANTIES NOR WARRANTIES
OF EITHER MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. RANSBURG
ASSUMES NO LIABILITY FOR INJURY, DAM-
AGE TO PROPERTY OR FOR CONSEQUEN-
TIAL DAMAGES FOR LOSS OF GOODWILL OR
PRODUCTION OR INCOME, WHICH RESULT
FROM USE OR MISUSE OF THE EQUIPMENT
BY PURCHASER OR OTHERS.
EXCLUSIONS:
If, in Ransburg’s opinion the warranty item in
question, or other items damaged by this part
was improperly installed, operated or maintained,
Ransburg will assume no responsibility for repair
or replacement of the item or items. The purchas-
er, therefore will assume all responsibility for any
cost of repair or replacement and service related
costs if applicable.
MCV Color Changer - Warranty Policies
CS-01-01.8 32
Ransburg
This manual was published to supercede Service Manuals CS-01-01.7, MCV
Series Modular Color Changer to make the following changes:
1. Change logo.
MANUAL CHANGE SUMMARY
MCV Color Changer - Manual Change
CS-01-01.833
Ransburg
Service Manual Price: $30.00 (U.S.)
Form No. CS-01-01.8
Litho in U.S.A.
03/13
© 2013 Ransburg. All rights reserved.
Models and specifications subject to change without notice.
Manufacturing
1910 North Wayne Street
Angola, Indiana 46703-9100
Telephone: 260/665-8800
Fax: 260/665-8516
Technical/Service Assistance
Telephone: 800/ 233-3366
Fax: 419/ 470-2071
www.ransburg.com
Technical Support Representative will direct you to the appropriate
telephone number for ordering Spare Parts.
