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TROUBLESHOOTING GUIDE

WARNING

Check all possible causes and solutions before

1

disassembling the mixer for repair. If problem is still not

To reduce the risk of serious bodily injury, 

corrected, refer to the troubleshooting sections in the

 injection, follow this procedure before

separate manuals supplied with each component in

checking. or repairing any parts and whenever you

your system.

shut down the 

1.. Close the mixer material valves.

2. Open the solvent flush valve and flush until

clean.

3 .

Shut off the air to the mixer motor.

4. Shut off the material pumps and solvent

5 .

Open the dispensing valve to relieve pressure.

6. Open any drain valves.

PROBLEM

Air motor won’t run

Little or no Part A (Resin) coming

out

Little or no Part B (Catalyst) com-

Material supply container

ing out.

Plugged material inlet (31) or
check 

 valve.

Air motor runs but material not
mixed properly.

CAUSE

SOLUTION

Not enough air pressure or

volume.

Closed or clogged air valves (42)
or lines.

Check. Requires 25 to 30 CFM

at 

 psi   bar) for con-

tinuous operation.

Open, clear.

Hardened material in mixing

chamber.

Material supply container

Plugged material inlet or check

valve.

See last section of Service,
page 7. Observe pot life.

Refill, prime system

Clean. Refer to Service.

Air motor (7) malfunction.

Replace.

Refill, prime system.

Clean, refer to Service.

Not enough air pressure or

volume.

Plugged material inlet (31) or
check 

 valve.

Check, adjust.

Clean. Refer to Service.

Drive shaft (18) broken.

Worn or damaged spline shaft

Replace. Refer to Service.

Replace. Refer to Service.

Broken or damaged mixing shaft

Replace. Refer to Service.

Air motor 

 malfunction.

Mixed material won’t flush out.

Hardened material in mixing

chamber 

Solvent supply container empty.

Solvent not compatible with
material.

Replace.

See last section of Service
Observe pot life.

Fill and prime.

Check, correct”

Material leaks around packing re-

Worn or damaged drive shaft

Replace. Refer to Service.

tainer 

packings 

 . .

*Be sure to read and observe the material manufacturer’s literature before using any material 

 

 system.

6

306-94-o

Summary of Contents for Hydra-Cat 207-388 F

Page 1: ...Parts ...

Page 2: ...ffuser If your gun is equipped with one The diffuser breaks up spray and reduces the risk of injection when the tip is not installed Check diffuser operation regular ly Follow the Pressure Relief Procedure below then remove the spray tip Aim the gun into a metal pail holding the gun firmly to the pail Using the lowest possible pressure trigger the gun If the fluid emitted is not diffused into an i...

Page 3: ...E SAFETY y_ y y K High pressure fluid in the hoses can be very dangerous If the hose develops a pinhole leak split or rupture due to any kind of wear damage or misuse the high pressure spray emitted from it can cause an injection injury or other serious bodily in jury or property damage ALL FLUID HOSES MUST HAVE SPRING GUA RDSI The spring guards help protect the hose from kinks or bends at or clos...

Page 4: ... outlet start the mixer motor and open the solvent valve When clean solvent comes form the outlet close and the sol vent valve then stop the mixer motor Let all samples cure or harden completely Examine each one for proper cure Select the sample which cured properly at the lowest air pressure and use that pressure for the mixer air supply Repeat the test if none of the samples cured properly CAUTI...

Page 5: ...ensing for a short time close the mixer material valves and open the solvent flush valve Leave the motor running Point the material outlet into a waste container open the dispensing valve and flush until the solvent is clean Close the solvent valve stop the motor and open the dispensing valve to relieve pressure For longer shutdowns solvent flush as above follow the Pressure Relief Procedure on pa...

Page 6: ...sed or clogged air valves 42 or lines Check Requires 25 to 30 CFM at 106 psi 7 bar for con tinuous operation Open clear Hardened material in mixing chamber Material supply container empty Plugged material inlet or check valve See last section of Service page 7 Observe pot life Refill prime system Clean Refer to Service Air motor 7 malfunction Replace Refill prime system Clean refer to Service Not ...

Page 7: ...sing If the shaft is damaged in any way replace it Check the packing contact area for burrs or scratches which will cause premature packing wear To reassemble install one or two washers 27 between the spline shaft and air motor to obtain a 0 347 to 0 437 in 8 8 to 11 l mm dimension Refer to Detail in Fig 4 Leave the packing nut 19 loose until the mixer is assembled then tighten Replace Packings If...

Page 8: ...mmer to break it loose then pry it off Knock out the mixing shaft if possible and place parts in a pail of compatible solvent If the mixing shaft 204 will not come out and there is no solvent available that will dissolve the material without damaging the parts install a complete new mixing assembly Refer to mixing assembly Completely disassemble the mixer and clean it thoroughly Reassemble using n...

Page 9: ...NER packing female gland V PACKING PTFE SHAFT mixer drive NUT plain round l l 8 12 UNF 2 thd size packing nut GUIDE spring check valve BRACKET mounting GLAND packing male QTY 3 2 3 2 2 1 2 1 1 2 i r 1 1 1 REF PART DESCRIPTION NO NO 167 765 167 766 167 770 168492 170 786 178 747 217561 207 411 213 040 Series B 104893 104892 164 900 178 746 165 274 165 964 178 745 172 094 178 743 165 599 208390 167 ...

Page 10: ...Model 207 390 GASKET copper MIXING SHAFT 2 blade Model 267 389 MIXING SHAFT 3 blade Model 207 390 BEARING end thrust 2 0 5 207494 Model 207 389 Model 207 390 204 BALL VALVE KIT 218 412 Adapts Series E and older power mixers to new style ball valve and actuating lever style If your mixer is Series E or older the material ball valves must be replac ed together and a new lever installed as the old pa...

Page 11: ......

Page 12: ...t substitution of non Grace parts faulty installation or tampering This warranty is conditioned upon the prepaid return of the equipment claimed to be defective for examination by Grace to verify the claimed defect If the claimed defect is verified Grace will repair or replace free of charge any defective parts The equipment will be returned to the original purchaser transportation prepaid If insp...

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