AST PCH GMP-025 Series User Manual

DAILY OPERATION
 Open “A” and “B” container supply valves.
 Check level of materials in containers, making sure level
is always over ¼ filled.
 Clean off applicator dispense head with plastic mixer
nozzle removed
 Verify smooth, air-free flow of both materials by
dispensing material into waste container. Check for two
smooth, consistent streams of material.
 Wipe head clean and coat dispense head with
compatible lubricant.
 Place new plastic mixer nozzle on dispense head with
retaining nut.
 Dispense approximately 2 mixer volumes of material into
waste container.
 Make 2 or 3 test samples to verify performance.
 Remove static mixer nozzle.
 Trigger applicator to relieve any pressure in lines or
system. Materials may ooze out of applicator.
 Turn off or disconnect motor controller.
 Fill dispense manifold with compatible lubricant. Fill
each zerk until material inside dispense manifold is
replaced with compatible lubricant.
 Lubricate each pump:
o
Open bleed valve at bottom of pump.
o
Grease zerk at top of pump until material coming out of
bleed port is clean, fresh lubricant.
o
Close bleed valve & verify tanks are over 1/3 full.
 Clean threads & ports of dispense manifold
 Remove & soak manifold in compatible solvent, if
necessary
#60065-02: Page #7
VERY IMPORTANT: As soon as a problem is noticed,
immediately remove disposable mixer nozzle and try
dispensing material. This may prevent or purge material
crossover if it has not already hardened.
After static mixer is removed, THEN check the following:
 Is the dispense manifold plugged? (Material set up)
 Is there sufficient material in the tanks?
 Is the pressure at the outlet gauges changed from
normal?
 Is the machine dispensing on ratio?
If ratio is not correct:
 Check if air is entrapped in the pumps or hoses
 Check if the drive chain is loose or worn

Check if one or both of the pump sprockets are frozen
(Can the sprocket be rotate with a large pliers?)
START-UP
SHUT-DOWN
METERING PUMP MAINTENANCE
PERIODIC MAINTENANCE
DISPENSE VALVE MAINTENANCE
 Remove retainer cap and/or mixer nozzle
 Trigger applicator; two separate beads of material will
appear; compare for correct volume
 Replace o-rings, packings & seals, if necessary
RATIO CHECK
TROUBLESHOOTING
 Remove and clean any material residue or film with
compatible solvent (damp pad only – do not pour
solvent)

Lubricate with compatible lubricant.

If leakage appears at shaft, replace seals.
**Use caution when disassembling the Gerotor pump
making sure not to gouge or mar any of the internal
surfaces of the pump**

AST PCH GMP-025 Series Specifications

General

Brand	AST
Model	PCH GMP-025 Series
Category	Paint Sprayer
Language	English