12
PROBLEM
POSSIBLE CAUSE
SOLUTION
Pump operates, but does not
dispense media at all
Media viscosity is too high
Make sure that media used has a viscosity of SAE 130 or
lower
Drum is Empty
Media level inside the drum may be too low. Refill drum
Pump inlet is blocked
Remove suction tube & clean strainer at pump inlet
Air Inlet Pressure is too less
Increase air pressure. It must be at least 30 PSI (2 BAR)
Pump not working / less
discharge
Air Inlet pressure is too less
Increase air pressure. It must be at least 30 PSI (2 BAR)
Nylon Slider (27) is jammed / overtight
1. Check for any build-up edge on Clip (28) & tighten it
again. Make sure the movement of Nylon Slider (27) is
neither very loose nor very tight
2. If needed, replace Nylon Slider (27). Also replace the
Paper Seal (24), Seat (25) & Slider Guide (26) to ensure
the best fitting
Plunger (9) / Connecting Rod (43) / Piston
(53) jammed.
1. Remove suction tube. Disconnect Air Motor Assembly
from Pumping Section by removing the upper Slotted
Spring Pin (46) from Connector (47)
2. Supply input air to Air Motor. If it works properly
without the barrel assembly, then the problem lies with
the pumping section. Otherwise check the Air Motor
for smooth movement
3. After locating the faulty section, check the respective
Piston / Plunger & the associated washers & seals for
any overlap or wear & tear. Replace the defective parts
from Repair Kit
4. Ensure to replace the moving parts having close
tolerances (such as Nylon Slider (27) & Seat (25) as a
SET to ensure the best fitting
Pump continues to operate
even after the trigger of
dispensing gun has been
released
Leakage in the assembly
Check all the connections to ensure they are air tight. Use
thread sealant.
Check O rings & seals for damage. Replace the defective
parts from Repair Kit
Media comes through the air
Exhaust Valve (23)
Media leaks into the Air Motor
Check Slider Guide (38), O Rings (11) & (37), Seals (39) &
Seal Support (40) for wear & tear. Replace the damaged
parts from Repair Kit
Air passes directly from inlet
to the outlet & pump does not
work
Nylon Slider (27) is jammed / overtight
1. Check for any build-up edge on Clip (28) & tighten it
again. Make sure the movement of Nylon Slider (27) is
neither very loose nor very tight
2. If needed, replace Nylon Slider (27). Also replace the
Paper Seal (24), Seat (25) & Slider Guide (26) to ensure
the best fitting
Discharge suddenly stopped
while the pump was running
Seals / O Rings Damage
Check all seals / O Rings & replace the damaged parts from
Repair Kit
Chip / Other foreign particles get clogged at
dispensing gun / discharge outlet
Clean all foreign particles / chips
Clogging of Filter Tube (60)
Open Filter Tube (60), clean it & reassemble it properly
TROUBLESHOOTING
(Refer to Exploded View - Page 9)
Table 2
