Slave Pumps

Caution: Always wear proper safety equipment (glasses, gloves, respirator, etc.) when working on spray equipment.

• Problem Catalyst spitting from gun. Intermittent catalyst flow.
  • Possible Causes: Air is drawn into catalyst siphon assembly.
    Solution: Replace inlet nipple.
  • Possible Causes: Cracked or deteriorated (pin holes) inlet nipple at bottom of slave
    pump.
    
    Solution: Replace inlet nipple.
  • Possible Causes: Worn or cut o-ring in inlet nipple.
    Solution: Replace o-ring in inlet nipple.
  • Possible Causes: Improper seal around siphon hose.
    Solution: Check seal and be sure hose is inserted all the way into nipple.
  • Possible Causes: Cracked or deteriorated (pin holes) catalyst siphon hose.
    Solution: Replace catalyst siphon hose.
  • Possible Causes: Cracked or deteriorated elbow assembly on catalyst jug
    assembly.
    
    Solution: Replace elbow assembly.
  • Possible Causes: Air trapped in system.
    Solution: Reprime line by hand.
• Problem No catalyst coming from gun.
  • Possible Causes: Ball valve open on catalyst manifold (if applicable).
    Solution: Be sure ball valve is fully closed.
• Problem No catalyst flow on down stroke of catalyst pump.
  • Possible Causes: Debris in lower ball and seat assembly.
    Solution: Remove and clean.
  • Possible Causes: Chipped or worn ball and/or seat.
    Solution: Inspect and replace ball and/or seat if necessary.
• Problem No catalyst flow on upstroke of catalyst pump.
  • Possible Causes: Debris in ball seat assembly located at bottom of pump shaft
    (commonly referred to as upper bal seat assembly).
    
    Solution: Remove and clean.
  • Possible Causes: Chipped or worn ball and/or seat assembly.
    Solution: Inspect and replace ball and/or seat if necessary.
• Problem Loss of catalyst pressure.
  • Possible Causes: Worn or cut o-ring on ball seat assembly located on bottom of
    pump shaft (commonly referred to as upper ball seat assembly).
    
    Solution: Replace o-ring.
  • Possible Causes: Sticking catalyst pressure relief valve assembly, located on
    catalyst manifold (if applicable).
    
    Solution: Disassemble, inspect and clean.
    Replace seals if necessary.
    
• Problem Catalyst leaking from top of catalyst slave pump.
  • Possible Causes: Worn or cut o-rings located in top of pump.
    Solution: Replace o-rings.
  • Possible Causes: Upper packings need to be adjusted (if applicable).
    Solution: Adjust packing nut 1/8 to 1/4 turn, with pump depressurized.
  • Possible Causes: Bent catalyst pump shaft.
    Solution: Replace pump shaft.