The pump does not
One or more valves are
Examine the valve seatings and
draw water.
seating improperly.
clean them.
Suction line is plugged
Examine suction line. Clean
or collapsed. Clogged
strainer.
strainer.
Pressure gauge fluctuates
The pump is sucking in
Examine the suction hose and
excessively.
air through the suction
make sure it is firmly secured.
union or air has not been
Run the pump with the outlet
entirely evacuated from
hose open to evacuate air from
the pump.
the pump.
The liquid flow is
One or more valves are
Examine the valve seatings and
irregular.
seating improperly.
clean them.
Output drops and the
Oil level is too low.
Add oil to correct level (halfway
pump is noisy.
up the sight tube).
Oil comes out of the
One or more diaphragms
Drain the pump of oil.
discharge port.
split.
Dismantle the heads and fit
new diaphragms. Fill to correct
oil level with motor oil (30W).
Water is pumped at
The sealing valve on the
Replace washer and, if necessary,
little or no pressure.
pressure control valve
the valve seat.
is worn.
TROUBLESHOOTING
Page 8
PROBLEM: CAUSE: REMEDY:
Summary of Contents for GDL200
Page 12: ...Page 10 TANK ASSEMBLY 50 GALLON ...
Page 15: ...TANK ASSEMBLY 100 150 GALLON Page 13 ...
Page 18: ...RUN OF FLUIDS 50 GALLON Page 16 ...
Page 21: ...RUN OF FLUIDS 100 150 GALLON Page 19 ...
Page 24: ...ELECTRIC CONTROLS Page 22 ...
Page 26: ...FAN ASSEMBLY Page 24 ...
Page 29: ...OPTIONAL VOLUTE Page 27 28 ...
Page 32: ...GEARBOX ASSEMBLY Page 30 ...
Page 34: ...SPRAYER BOOM Page 32 ...
Page 38: ...TOMMY GUN GHT Page 36 ...
Page 40: ...PUMP ASSEMBLY FOR GDL200 APL200 Page 38 AR403 ...
Page 45: ...PUMP ASSY GDL400 600 APL400 600 Page 43 AR503 ...
Page 50: ...HOSE REEL 112 4 75 Page 48 ...
Page 52: ...HOSE REEL 1125 4 325 Page 50 ...