Pul-Blast
AR pump system
40
TROUBLESHOOTING
The AR diaphragm pump delivers volume
determined by pump speed.
Set pressure with your adjustable relief valve.
Pressure gauge fluc-
tuates wildly
Air dome pressure too low or high
Pump sucking air
Faulty suction strainer
Air in pump cavity
See
pressurizing instructions
on pump operation page
Hoses and unions should be tightly fitting and have no holes
Check strainer and connections for suction leaks
Run pump with open discharge to completely evacuate air
No pump suction
Check valve seating improperly
Examine and clean all check valve seats in the pump
Milky pump oil
Transparent filler
spout overflows
Diaphragm rupture
Check diaphragms and replace where necessary
See
diaphragm replacement
on pump maintenance page
Output drops
Pump noisy
Low oil level
Add oil to fill level indicated on fill neck
Use 30W non-detergent oil
Excessive pulsation
Air dome pressure too low or high
See
pressurizing instructions
on pump operation page
No pressure
Very little pressure
Pressure drops below
working range when
relief valve is open
to spray applicator
Plugged strainer
Suction hose obstruction
Collapsed suction hose outside or inside tank
Pump sucking air
Nozzle volume greater than pump capacity
Excessive tank foam
Pressure relief valve stuck or worn
Pump inlet/outlet check valve worn
Clean screen- see
suction care
on pump operation page.
Clear obstruction
Replace collapsed hose
Hoses and unions should be tightly fitting and have no holes
Adjust relief valve
Reduce nozzle orifice size
Reduce number of nozzles in use
Refill tank if foaming because of low volume
Move agitator paddle if too close to suction
Check relief valve for wear- repair or replace
Replace check valve(s)
Problem
Source
Fix
CHEMICAL CONTAINERS INC.
800 346 7867
