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Master II Gun 

 

Service Manual 

 

3/21 

2.0 Issue  

Ref. NR-00021-ENG 

http://www.gamapur.com/

 

 

 

All of the information provided in this Service Manual has been included in the confidence that it 
is  true,  although  it  does  not  constitute  any  responsibility  or  implicit  or  explicit  guarantee.  HI-
TECH  reserves  the  right  at  any  time  without forewarning  to make  all  necessary  improvements 
and  modifications  to  this  Service  Manual  in  order  to  rectify  any  possible  typographical  errors, 
increase  the  information  contained  and  enter  the  changes  made  to  the  characteristics  and 
performances of the gun.  

 

 

This  chapter  contains  important  information  on  safety,  handling  and  use  of  your 

GAMA

 

MASTER II 

series gun.

 

 

Before  installing  and  starting  up  the  gun,  carefully  read  all  the  technical 
and  safety  documentation  included  in  this  manual.  Special  attention 
should  be  paid  to  the  information  for  knowing  and  understanding  the 
handling and conditions of use of the gun. All of the information is aimed 
at  enhancing  User  Safety  and  avoiding  possible  faults  due  to  incorrect 
use of the gun. 

WARNING!

  establishes  information  for  alerting  you  on  the  situations  which  could 

cause serious injury if the instructions are not followed.  

PRECAUTION!

 establishes information which indicates how to avoid damage to the 

gun and how to avoid a situation which could cause minor injuries.  

NOTE

 is relevant information on the procedure being carried out.  

Careful  study  of  this  manual  will  help  you  to  become  more  acquainted  with  the  gun  and  the 
procedures. Following the instructions and recommendations here will reduce the potential risk 
of  accidents  in  installing,  using  or  maintaining  the  gun,  and  will  give  you  the  problem-free 
operation  for  a  longer  time,  greater  output  and  the  possibility  of  detecting  and  resolving 
problems quickly and simply.  

Keep  this  Service  Manual  for  consultation  and  useful  information  at  any  time.  If  you  lose  the 
manual, ask for a new copy from your local 

HI-TECH

 distributor or make direct contact with 

HI-

TECH SRAY EQUIPMENT, S. A

.  

WARNING:

 The gun's design and configuration do not allow it to be used in potentially 

explosive atmospheres or to exceed the pressure and temperature limits described in the 
technical specifications of this manual.  

Always use liquids and solvents that are compatible with the unit. In the event of doubt, consult 
the 

HI-TECH

 technical service.  

 

SAFETY AND HANDLING 

Summary of Contents for Master II Series

Page 1: ...carefully read all the technical and safety documentation included in this manual Special attention should be paid to the information in order to know and understand the handling and conditions of use...

Page 2: ...ifications of the Product not authorised by HI TECH or due to the use of accessories heating devices pumping equipment and or dispensers that have not been approved or manufactured by HI TECH d The gu...

Page 3: ...on for alerting you on the situations which could cause serious injury if the instructions are not followed A PRECAUTION establishes information which indicates how to avoid damage to the gun and how...

Page 4: ...ovided by your supplier to prevent any possible injury caused by incorrect handling of the raw materials and solvents used in the process Deal with all waste caused according to current regulations To...

Page 5: ...Kgf cm2 24 MPa 3500 psi Required air pressure _________________________ 6 8 Kgf cm2 0 6 0 8 MPa 85 114 psi Maximum production ratio 1 1 ________________________________ 18 Kg min 40 lb min Minimum pro...

Page 6: ...f the elements of the MASTER II series gun For more precise identification see the Components Manual ref NR 00020 ENG 1 Gun block unit 2 Polyol side cartridge unit 3 Isocyanate Side Cartridge Unit 4 B...

Page 7: ...by turning them clockwise The manual valves control the input flow of each product to the chamber and are located on the Coupling Block 2 Connect the air supply pipe to the connector at the rear of th...

Page 8: ...e the Machine Service Manual 9 Completely open the manual valves of each product by turning them anticlockwise 10 Press the blocking device and turn it anticlockwise to leave it in projection mode or...

Page 9: ...Use a cloth dampened in solvent to clean the contact surfaces and the seals of the coupling block 6 Turn the isocyanate cartridge two turns anticlockwise 7 Turn the polyol cartridge two turns anticloc...

Page 10: ...ntral block by turning the locknut anticlockwise Clean the block with gun cleaning solvent 10 Clean the two contact surfaces of the mix chamber PRECAUTION Use wooden or plastic utensils or a brass bru...

Page 11: ...ssure until you are sure that all pressure has been eliminated Use suitable protection when operating maintaining or simply being in the area where the equipment is working This includes but is not li...

Page 12: ...due to breakage or deterioration make sure that they are completely open before mounting on the coupling block that the sphere is lodged inside the valve body If not it could damage the valves at the...

Page 13: ...Manual 2 Completely close the manual valves of each product by turning them clockwise 3 To eliminate the pressure from the gun press the trigger and project with the gun until the projection fan begin...

Page 14: ...der 7 mm 13 Grease all of the components and refit them in the cartridge 14 Screw the isocyanate cartridge unit into its housing until it blocks Make sure it is correctly tightened to avoid product le...

Page 15: ...o pressure until the pressures have been completely eliminated 1 Remove the coupling block 2 Use a cloth dampened with solvent to clean the contact surfaces and the seals of the coupling block 3 Disco...

Page 16: ...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 12 Screw down the trigger valve nut unt...

Page 17: ...n the rear of the gun 2 Remove the retention ring positioning the cylinder block using pliers for seeger rings 3 Pull hard on the blocking device to remove the whole unit from the cylinder sleeve Also...

Page 18: ...sing of the plunger Put the cylinder block unit inside the sleeve pressing until it stands out from the insertion groove of the retention ring 12 Fit the retention ring using pliers for seeger rings W...

Page 19: ...sleeve staple to the rear of the gun 3 Remove the retention ring positioning the cylinder block using pliers for seeger rings 4 Pull hard on the blocking device to remove the whole unit from the cylin...

Page 20: ...plied to the gun after performing any cleaning repairs or maintenance work 11 Fit the sleeve staple and fix it with the screw to the rear of the gun 12 Tighten the mix chamber by hand using a spanner...

Page 21: ...__________________________________ 7 Standstill Method _____________________________________________ 10 Maintenance _________________________________________________ 11 Gun block unit and mix chamber...

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