GAMA Master Series User manual

Service Manual
Spray Gun
Series Master
1.5 Issue 7/18/2013
Ref. NR-00008-ENG
Before installing the Master Gun and starting it up, carefully read all the
technical and safety documentation included in this manual. Pay special
attention to the information to know and understand the operation and the
conditions of use of the gun. All of the information is aimed at enhancing
User Safety and avoiding possible breakdowns derived from the incorrect
use of the Gun.

Service Manual
2/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
GARRAF MAQUINARIA, S. A. (hereinafter “GAMA”) provides this LIMITED WARRANTY (hereinafter “Warranty”) to the
original purchaser (hereinafter “Customer”) covering this equipment and the original GAMA manufactured accessories
delivered with the equipment (hereinafter “Product”) against defects in material or workmanship of the Product
(hereinafter “Defect” or “Defective”) for a period of two (2) years from the date of first purchase as shown on the original
GAMA invoice (hereinafter “Warranty Period”).
If during the Warranty Period under normal use, the Product is suspected by Customer to be Defective in material or
workmanship, it is Customer’s responsibility to contact GAMA and return the Product to GAMA as directed by GAMA,
freight prepaid. If GAMA determines that the Product is Defective and that such Defect is covered by this Warranty,
GAMA will credit Customer for the reasonable freight charges incurred by Customer in returning the Defective Product
to GAMA, and GAMA (or its authorized agent) will, at GAMA’s option, repair or replace the Product, subject to the
following:
Original Invoice: The original invoice must be kept as proof of the date of first sale and the Product serial number. The
Warranty does not cover any Product if the Original Invoice appears to have been modified or altered, or when the serial
number on the Product appears to have been altered or defaced.
Product Maintenance: It is the Customer’s responsibility to maintain the Product properly. See your maintenance
schedule and owner’s manual for details. The Warranty does not cover an improperly maintained Product.
Non-GAMA Components and Accessories: Non-GAMA manufactured components and accessories that are used in the
operation of the Product are not covered by this Warranty. Such components and accessories shall be subject to the
warranty offered to the Customer, if any, by the original manufacturer of such component or accessory.
Other Warranty Exclusions: The Warranty does not cover any Product that GAMA determines has been damaged or
fails to operate properly due to misuse, negligence, abuse, carelessness, neglect, or accident. By way of example only,
this includes:
Normal wear an tear.
Improper or unauthorized installation, repair, alteration, adjustment or modification of the Product.
Use of heating devices, pumping equipment, dispensers, or other parts or accessories with the Product that
have not been approved or manufactured by GAMA.
Failure to follow the operating instructions and recommendations provided by GAMA.
Cosmetic damage.
Fire, flood, “acts of God,” or other contingencies beyond the control of GAMA.
THE WARRANTY DESCRIBED HEREIN IS THE EXCLUSIVE REMEDY FOR THE CUSTOMER AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, AND THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES ARE HEREBY DISCLAIMED. TO THE FULLEST
EXTENT PERMITTED BY LAW, GAMA SHALL NOT BE RESPONSIBLE, WHETHER BASED IN CONTRACT, TORT (INCLUDING,
WITHOUT LIMITATION, NEGLIGENCE), WARRANTY OR ANY OTHER LEGAL OR EQUITABLE GROUNDS, FOR ANY
CONSEQUENTIAL, INDIRECT, INCIDENTAL, LOST PROFITS, SPECIAL, PUNITIVE OR EXEMPLARY DAMAGES, WHETHER TO
PERSON OR PROPERTY, ARISING FROM OR RELATING TO THE PRODUCT, EVEN IF GAMA HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH LOSSES OR DAMAGES.
Non-Warranty Service by GAMA: If GAMA determines that the suspected Defect of the Product is not covered by this
Warranty, disposition of the Product will be made pursuant to the terms and conditions of GAMA’s written estimate on a
time and materials basis.
Continuing Warranty for Products Repaired or Replaced under Warranty: Following the repair or replacement of a
Product covered by this Warranty, such Product will continue to be subject to the original Warranty for the remainder of
original Warranty Period or for three (3) months from the repair or replacement date, whichever is longer.
No Rights Implied: Nothing in the sale, lease or rental of any Product by GAMA shall be construed to grant any right,
interest or license in or under any patent, trademark, copyright, trade secret or other proprietary right or material owned
by anyone; nor does GAMA encourage the infringement of same.
Exclusive Warranty: This writing is the final, complete, and exclusive expression of the Warranty covering the Product.
Any statements made by GAMA, its employees or agents that differ from the terms of this Warranty shall have no effect.
It is expressly understood that Customer’s acceptance of this Warranty, by performance or otherwise, is upon and
subject solely to the terms and conditions hereof, and any additional or different terms and conditions proposed or
expressed by Customer or anyone, whether in writing or otherwise, are null and void unless specifically agreed to in
writing by an Officer of GAMA.
WARRANTY

Service Manual
3/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
This chapter contains important information on the safety, handling and use of your GAMA
MASTER series gun.
Before installing the Master gun and starting it up, carefully read all the
technical and safety documentation included in this manual. Pay special
attention to the information to know and understand the operation and the
conditions of use of the unit. All of the information is aimed at enhancing
User Safety and avoiding possible breakdowns derived from the incorrect
use of the gun
WARNING! establishes information to alert on a situation that might cause serious
injuries if the instructions are not followed.
PRECAUTION! establishes information that indicates how to avoid damage to the gun
or how to avoid a situation that could cause minor injuries.
NB: is relevant information on a procedure being carried out.
Careful study of this manual will enable the operator to know the characteristics of the gun and
the operating procedures. By following the instructions and recommendations contained herein,
you will reduce the potential risk of accidents in the installation, use or maintenance of the gun;
you will provide a better opportunity for incident-free operation for a longer time, greater output
and the possibility of detecting and resolving problems fast and simply.
Keep this Service Manual for future consultation of useful information at all times. If you lose
this manual, ask for a new copy from your GAMA local distributor or directly contact Garraf
Maquinaria, S.A.
Important Safety Information
The master gun has been designed and built for the application of polyurea chemical systems,
polyurethane foam chemical systems and some two-component epoxy systems.
WARNING: The design and configuration of the gun do not allow its use in potentially
explosive atmospheres or the pressure and temperature limits described in the technical
specifications of this manual to be exceeded.
Always use liquids and solvents that are compatible with the unit. In the event of doubt, consult
the GAMA technical service.
SAFETY AND HANDLING

Service Manual
4/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
When working with the gun, it is recommended that the operator wear suitable clothing and
elements of personal protection, including, without limitation, gloves, protective goggles, safety
footwear and face masks. Use breathing equipment when working with the gun in enclosed
spaces or in areas with insufficient ventilation. The introduction and follow-up of safety
measures must not be limited to those described in this manual. Before starting up the gun, a
comprehensive analysis must be made of the risks derived from the products to be dispensed,
the type of application and the working environment.
To prevent possible injury caused by incorrect handling of the raw
materials and solvents used in the process, carefully read the safety data
sheet provided by your supplier.
Deal with the waste caused according to current regulations.
To avoid damage caused by the impact of pressurized fluids, do not open
any connection or perform maintenance work on components subject to
pressure until the pressure has been completely eliminated.
Use suitable protection when operating, maintaining or being present in
the area where the equipment is functioning. This includes, but is not
limited to, the use of protective goggles, gloves, shoes and safety
clothing and breathing equipment.
The equipment includes components that reach high temperatures and
can cause burns. Hot parts of the equipment must not be handled or
touched until they have cooled completely.
To prevent serious injury through crushing or amputation, do not work
with the equipment without the safety guards installed on the moving
parts. Make sure that all the safety guards are correctly reinstalled at the
end of the repair or maintenance work of the equipment

Service Manual
5/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
* Internal mixture due to high pressure
* Automatic cleaning with pressurized air
* No solvents needed
* Mechanical spraying
* Exterior lubrication of the mix chamber
Approximate weight: 1 Kg / 2.2 lbs
Dimensions: H 19 cm / W 10 cm / L 19 cm
Maximum working pressure:_______________________ 210 Kgf/cm2 (20.6 MPa) / 3000 psi
Air pressure required: _________________________ 6-8 Kgf/cm2 (0.6-0.8 MPa) / 85-114 psi
Maximum production ratio 1:1:________________________________ 18 Kg/min / 40 lb/min
Minimum production ratio 1:1: _______________________________ 1.5 Kg/min / 3.3 lb/min
Opening force @ 6 bar: ____________________________________________ 90 Kg / 200 lb
Closing force @ 6 bar: _____________________________________________ 93 Kg / 205 lb
Approximate air consumption @ 6 bar (50 cycles/min): _______________307 litres/minute
CHARACTERISTICS
TECHNICAL SPECIFICATIONS

Service Manual
6/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
For better knowledge of the elements forming the MASTER series gun, the main components
and their description are shown. For more precise identification, see the Components Manual
ref. NR-00004-ENG
1. Gun block unit
2. Polyol input block unit
3. Metal sealing kit
4. Polyol filter body
5. Polyol manual valve
6. Isocyanate input block unit
7. Isocyanate filter body
8. Isocyanate manual valve
9. Mix chamber
10. Trigger
11. Diffuser
12. Blocking device
GENERAL DESCRIPTION

Service Manual
7/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
PRECAUTION: When working with the gun or performing maintenance work on it,
wear suitable protection in accordance with the recommendations and specifications
provided by the product suppliers.
GAMA provides a series of tools and accessories (KT-00013) that are necessary for
assembling the gun. The tool kit is made up of the following elements:
49gr. Tube of grease (1x BI-00009), 5/16” Tube spanner (1x HT-00054), bits for cleaning (1x
HT-00060), air hose supply (1x MA-00027), quick connect (1x RA-00109), adapter (1x RA-
00110), Service Manual (1x NR-00008) and Parts Identification (1x NR-00004).
1. Close the manual valves by
turning them to the full clockwise
position. The manual valves
control the flow of each product to
the chamber and are located on
the Isocyanate input block and the
Polyol input block.
2. Press the safety stop and turn it
clockwise to set it to the blocking
position.
3. Fit the air supply pipe and
connect it to the connector on the
rear of the gun.
4. Connect the Isocyanate hose (red
terminal) to the connection on the
Isocyanate input block (letter A).
5. Connect the Polyol hose (blue
terminal) to the connection on the
Polyol input block. (letter R).
NB.: The product hoses are
identified in red and blue, allowing
the user to rapidly recognise them.
The red corresponds to the
Isocyanate hose and the blue to the
Polyol hose. To avoid connection
errors, the coupling connections of
the Isocyanate and Polyol hoses are
different sizes, which makes it
impossible to swap connections.
6. Connect the air supply to the gun.
7. Pressurise the gun and make sure there are no leaks.
8. Pull the trigger several times to check the correct movement of the mixing chamber.
9. Check that the pressure in the machine and the temperature of the heaters and the hoses
is correct (see the Machine Service Manual).
10. Open the manual valves of each product by turning them to the full counter clockwise
position.
INSTALLATION AND START-UP

Service Manual
8/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
11. Press the safety stop and turn it counter clockwise to set it to the spray position
12. Perform a test projection in a vessel.
WARNING: Before performing maintenance, repair or cleaning work, press the safety
stop and turn it clockwise to set it to the blocking position, close the manual valves
completely and disconnect the air supply to avoid possible accidents.

Service Manual
9/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
1. Perform the Unit Shutdown Procedures, following the method indicated in the Machine
Service Manual.
2. Close the manual valves of each product by turning them to the full clockwise position.
3. To eliminate the pressure from the gun, pull the trigger
and project the gun until the projection fan starts to
reduce.
4. Press the safety stop and turn it clockwise to set it to the
blocking position
5. Disconnect the air supply from the gun.
6. Remove the cap and lubricate the mixing chamber with
the grease gun supplied in the tool kit; this action will
prevent the cleaning air of the gun from reacting with the
ISOCYANATE product and avoiding crystallization which
may damage the chamber and cap.
NB.: The use of injecting lubrication into the gun at the end of the day will avoid
maintenance time, as it will not be necessary to remove the chamber each day to clean it.
PRECAUTION: :To avoid possible contamination by the product remains deposited in
the components of the gun, do not exchange the Isocyanate parts with the Polyol parts.
The gun has the Isocyanate side identified with the letter A.
If the product hoses maintain the pressure, follow the Standstill Method
indicated in the Machine Service Manual.
To eliminate the pressure from the hoses with the gun removed, fit the
product input blocks in a suitable container, keep a reasonable distance
away and very carefully and very slowly open the manual valves. Under
pressure, the product will come out of the side of the blocks.
SHUTDOWN PROCEDURES

Service Manual
10/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
To obtain maximum output from your MASTER gun, it is necessary to periodically perform
certain maintenance operations.
To prevent possible injury caused by incorrect handling of the raw
materials and solvents used in the process, carefully read the safety data
sheet provided by your supplier.
Deal with the waste caused according to current regulations.
To prevent serious damage caused by the impact of pressurised fluids,
never open a connection or perform maintenance work on components
subject to pressure until all pressure has been eliminated.
Use suitable protection when operating, maintaining or being present in
the area where the equipment is functioning. This includes, but is not
limited to, the use of protective goggles, gloves, shoes and safety
clothing and breathing equipment.
The equipment includes components that reach high temperatures and
can cause burns. Hot parts of the equipment must not be handled or
touched until they have cooled completely.
To prevent serious injury through crushing or amputation, do not work
with the equipment without the safety guards installed on the moving
parts. Make sure that all the safety guards are correctly reinstalled at the
end of the repair or maintenance work of the equipment.
MAINTENANCE

Service Manual
11/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Gun block unit and mix chamber
WARNING: Before proceeding to carry out maintenance work on the gun, make sure
that the unit is at a complete standstill, that all the buttons and the general switch are
turned off and that the unit is disconnected from the main power supply. The gun is a
component that works under pressure; no connection must be opened and maintenance
work must not be performed on components subject to pressure until the pressure has
been totally eliminated.
Unscrew the diffuser. Remove the bolts fixing the product input blocks to the gun block and
carefully separate both blocks from the gun. Clean the contact surface using a cloth dampened
in gun-cleaning solvent.
PRECAUTION: Use wooden or plastic utensils or a brass brush for cleaning. Do not
use metal utensils that can scratch the contact surfaces.
Remove the gun block mounting bolts and separate the gun block by sliding it over the
chamber. To eliminate the residual product, clean the gun block unit using a cloth dampened
with gun cleaning solvent and a brass brush. Remove the o-ring.
Use a spanner to lock the end of the pneumatic cylinder shaft and unthread the mixing
chamber. Clean the mix chamber and, if necessary, use a brush to go over the product passage
holes. Make sure that the chamber is not scratched or marked.
Replace the chamber if there are any small faults.
Screw the chamber back onto the end of the pneumatic cylinder shaft.
Fit the gun block unit by sliding it over the chamber and fix it to the gun with the bolts. Make
sure to fit the o-ring between the block and the fixing plate. Replace the o-ring if it is damaged.
Tighten alternately to avoid possible leaks.
Fit the side blocks to the gun block with the corresponding bolts. Tighten alternately to avoid
possible leaks. Screw on the Air Cap. The gun is now ready for service.

Service Manual
12/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Side block unit
WARNING: Before performing maintenance work on the gun, make sure that the unit is
at a complete standstill, that all of the buttons and the main switch are turned off and that
the unit is disconnected from the main power supply. The gun is a component that works
under pressure; no connection must be opened and no maintenance work must be done
on components subject to pressure until the pressure has been completely eliminated.
Remove the side block mounting bolts on the Polyol side and carefully separate it from the gun
block. Clean the contact surfaces using a cloth dampened in gun-cleaning solvent.
Unscrew the filter housing and remove the seal and the filter screen. Carefully clean the filter
with gun cleaning solvent and check that the mesh is completely free from contaminants.
Replace the filter screen as required.
Remove the check valve retainer from the side block.
Remove the plastic/metal non-return unit and clean it with gun-cleaning solvent. Replace it if
damaged.
Remove the parts and clean with gun cleaning solvent or replace them as required.
Clean all of the components meticulously to eliminate the remains of product using a cloth
dampened with gun cleaning solvent and a brass brush.
PRECAUTION: Use wooden or plastic utensils or a brass brush for cleaning. Do not
use metal utensils that can scratch the contact surfaces.

Service Manual
13/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Reassemble the check valve and side seal assembly.
In the model with a metal seal, you must fit the spring and the check valve into the retainer. To
facilitate assembly, use a little grease to fit the o-ring in the metal seal cap; make sure that it is
not damaged and replace it if necessary. Press the metal seal cap into the retainer until the o-
ring is fitted in its groove.
Hand-tighten the metal seal and retainer into the side block. If you use a spanner, do not over
tighten the retainer more than 1/4 of a turn.
PRECAUTION: Do not tighten the check valve retainer excessively. Tightening more
than 1/4 of a turn can damage the plastic/metal check valve and cause leaks.
Check the wear on the metal seal, by measuring the distance that it stands out from the cap
housing. If the seal is worn, knocked or scratched, it can cause leaks. Replace the seal if it
stands out less than 1.65 mm / 1/16 inch.
To check whether the metal check valve is damaged as a result of excessive tightening, make
sure the separation between the support face of the side block and the bottom of the cap
housing, once fitted, is 0.46 mm / 1/64 inch. If the separation is smaller, the check valve must
be replaced.
Assemble the screen screw and screw it into the side block.
Fix the Polyol side block onto to the gun block with the corresponding bolts. Tighten alternately
to avoid possible leaks.
Perform the same steps with the side block on the Isocyanate side.
The gun is now ready for service.

Service Manual
14/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Trigger and valve
WARNING: Before performing maintenance work on the gun, make sure that the unit is
at a complete standstill, that all of the buttons and the main switch are turned off and that
the unit is disconnected from the main power supply. The gun is a component that
works under pressure; no connection must be opened or maintenance work done on
components subject to pressure until the pressure has been completely eliminated.
Remove the side blocks and carefully separate them from the gun block. Clean the contact
surfaces using a cloth dampened in gun cleaning solvent.
Disconnect the air hose supply with the quick connect.
Unscrew the trigger stop bolt.
Remove the retention ring and extract the pin holding the trigger.
Unscrew the nut of the trigger valve.
Remove the trigger shaft and hold it carefully for the end with a few pliers to extract it from the
hole. The trigger shaft has a spring in the base. Make sure you do not lose it.
Check the o-rings of the trigger shaft. Replace them if they are damaged. Apply a little grease to
make assembly easier.

Service Manual
15/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Verify that the accommodation of the trigger shaft is free of dirt and wall light a small fat layer in
his interior.
Mount the air hose in the rear part of the gun using sealing paste in the thread to avoid air
escapes.
Insert the trigger shaft in to the spring and insert it inside the handle taking special care not to
damage the o-rings. You will note a certain resistance caused by the interference of the seals
with the housing wall.
Screw down the trigger valve nut until it does ceiling in the fund.
Fit the trigger with the pin and hold it with the retention ring.
Place the trigger stop bolt. It must be tight up to eliminating the roominess of the trigger shaft
(without to displace the shaft).
Fix the product input blocks to the gun block with the corresponding bolts. Tighten alternately to
avoid possible leaks.
The gun is now ready for service.

Service Manual
16/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Cylinder block and safety stop
WARNING: Before performing maintenance work on the gun, make sure that the unit is
at a complete standstill, that all of the buttons and the main switch are turned off and that
the unit is disconnected from the main power supply. The gun is a component that
works under pressure; no connection must be opened or maintenance work done on
components subject to pressure until the pressure has been completely eliminated.
Remove the side blocks and carefully separate them from the gun block.
Clean the contact surfaces with a cloth dampened in gun cleaning solvent.
Unscrew the bolt fixing the clamp on the rear of the gun.
Remove the retaining ring from the cylinder using the snap ring pliers.
Pull hard on the safety stop to remove the whole unit from the cylinder. Also remove the
plunger spring.
Check the state of the o-ring seal on the end cap. Replace it if it is damaged.
Apply a little grease to facilitate the placement of the o-ring.
Loosen the two set screws on the safety stop. Remove the stop pin and the stop spring from the
device.
Remove the end cap from the stop pin.
Remove the lip seal from the end cap and replace it if it is damaged. Apply a little grease to
facilitate the fitting.
Pay attention to the correct installation of the lip seal: The seal lips must face forward.
Fit the end cap onto the stop pin. Slide the spring and the safety stop onto the stop pin. Tighten
the two set screws making sure that they are perfectly aligned with the flats on the end of the
stop pin. Make sure that the blocking device is well-fitted.
Insert the spring in the rear housing of the plunger. Insert the end cap into the cylinder bore by
pressing until it passes the insertion groove of the retention ring.
Fit the retention ring using snap ring pliers.

Service Manual
17/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
WARNING: To assure that the end cap is well-fitted, make
sure that the retention ring is perfectly fitted in the fixing
groove. To avoid possible errors in assembly, avoid
approaching the cylinder block when applying pressure to the
gun after cleaning, repair or maintenance operations.
Fit the clamp and fix it with the bolt to the rear of the gun.
Fix the side blocks to the gun block with the corresponding bolts.
Tighten alternately to avoid possible leaks.
The gun is now ready for service.

Service Manual
18/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Pneumatic cylinder
WARNING: Before performing maintenance work on the gun, make sure that the unit is
at a complete standstill, that all of the buttons and the main switch are turned off and that
the unit is disconnected from the main power supply. The gun is a component that works
under pressure; no connection must be opened or maintenance work done on
components subject to pressure until the pressure has been completely eliminated.
Unscrew the air cap. Remove the side blocks from the gun block. Clean the contact surfaces
using a cloth dampened with gun cleaning solvent.
Remove the gun block from the gun by sliding it over the chamber. To eliminate the remains of
product, clean the gun block unit using a cloth dampened with gun cleaning solvent. Remove
the o-ring.
Use a spanner to lock the end of the pneumatic cylinder shaft and unthread the mixing
chamber. Clean the mixing chamber and, if you consider it necessary, use a brush to go over
the passage holes.
Remove the cylinder clamp.
Using the snap ring pliers, remove the retaining ring holding the end cap.
Pull hard on the blocking device to remove the whole unit from the cylinder bore. Also remove
the spring and the piston assembly from inside the cylinder.
Using the snap ring pliers, remove the snap ring from the piston shaft and separate it from the
piston.
Check the state of the o-rings of the shaft and piston. Replace them if they are damaged. Apply
a little grease to facilitate the fitting.
Fit the piston by sliding it onto the shaft taking special care not to damage the o-rings. Fit the
retention ring.
Fit the piston assembly into the cylinder bore.
Insert safety stop assembly into the cylinder bore until it passes the insertion groove of the
retention ring.
Fit the retention ring using the snap ring pliers.

Service Manual
19/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
WARNING: To Warranty that the cylinder block is well-fitted,
make sure that the retention ring is perfectly fitted in the fixing
groove. To avoid possible errors in assembly, avoid
approaching the end cap when applying pressure to the gun
after cleaning, repair or maintenance operations.
Install the cylinder clamp.
Hand-tighten the mix chamber while holding the end of the
pneumatic cylinder with a spanner.
Assemble the gun block by sliding it over the chamber and fix it to the
gun with the bolts. Make sure to fit the o-ring between the block and
the fixing plate and replace it if it is damaged. Tighten alternately to
avoid possible leaks.
Assemble the side blocks to the gun block with the corresponding
bolts. Tighten alternately to avoid possible leaks. Screw on the
diffuser.
The gun is now ready for service.

Service Manual
20/20 1.5 Issue Ref. NR-00008-ENG
http://www.gamapur.com
Warranty _____________________________________________________ 2
Safety and Handling____________________________________________ 3
Important Safety Information __________________________________________________ 3
Characteristics ________________________________________________ 5
Technical Specifications ________________________________________ 5
General Description ____________________________________________ 6
Installation and Start-up ________________________________________ 7
Shutdown Procedures __________________________________________ 9
Maintenance _________________________________________________ 10
Gun block unit and mix chamber ______________________________________________ 11
Side block unit ____________________________________________________________ 12
Trigger and valve __________________________________________________________ 14
Cylinder block and safety stop ________________________________________________ 16
Pneumatic cylinder_________________________________________________________ 18
Content _____________________________________________________ 20
CONTENT
Table of contents
Other GAMA Paint Sprayer manuals