Troubleshooting:
Type C Compression Sprayers

The following describe common problems and solutions for the following sprayer models:

The following problems are listed, along with their causes and solutions:

  1. Trigger on spray gun sticks
  2. Pin in the spray pistol sticks
  3. Fluid returning through pump
  4. Unit slips while pumping

Problem 1:
The trigger on the spray gun sticks

When you squeeze the trigger on the spray gun, it sticks and is slow in returning to the shut-off position when you release the trigger.

Cause:

The O-rings have deteriorated because of chemical attack.

Solution:

Replace the O-rings in the spray pistol and on the brass spindle inside the spray gun (Order KIT 20). Note that if these O-rings have deteriorated, you should also check and replace the other O-rings and seals in your sprayer before leaks or other problems occur.

Problem 2:
The pin in the spray pistol sticks

The pin in the spray pistol sticks when pushed. When you release the trigger, the pin does not rise to shut off the flow.

Cause:

The O-rings and washer on the spindle inside the spray pistol have deteriorated from age or chemical attack.

Solution:

Unscrew the cap on the bottom of the spray pistol. Push out the brass spindle and replace the O-rings and washers (Order KIT 20).

Problem 3:
Fluid returning through pump

When the sprayer is pumped, some fluid is backing up through the pump.

Cause:

The small plug at the top of the pump module has deteriorated because of chemical attack.

Solution:

Replace the small check valve (antenna with O-ring).

Problem 4:
Unit slips while pumping

While pumping, the unit slips and does not seal properly to push air into the unit.

Cause:

The rubber or leather check inside the pump has dried out or cracked.

Solution:

Remove the top from the pump module and check seal. If the seal is not cracked, lubricate it with oil. If the seal is cracked it will need to be replaced.


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