Great Plains Industries M-3295 Serie Manual Del Usuario página 3

OPERATION
DANGER
To prevent physical injury, observe precautions
against fire or explosion when dispensing fuel.
Do not operate the system in the presence of any
source of ignition including running or hot engines,
lighted cigarettes, or gas or electric heaters.
WARNING
Observe precautions against electrical shock when
operating the system. Serious or fatal shock can
result from operating electrical equipment in damp
or wet locations.
CAUTION
Avoid prolonged skin contact with petroleum fuels.
Use protective goggles, gloves and aprons in case
of splashing or spills. Change saturated clothing
and wash skin promptly with soap and water.
To dispense fuel:
1. Remove the nozzle from the holder. Turn the pump
on by pulling down on the switch lever.
2. Insert the nozzle into the receiving tank and squeeze
the handle to dispense fuel.
3. After dispensing fuel, push the switch lever up to turn
the pump off and return the nozzle to the holder. The
nozzle may be locked in place to prevent unauthor-
ized use.
CAUTION
Nozzle valve must be stored properly in
nozzle holder (as shown) when not in use.
The pump contains an automatic bypass valve to prevent
pressure buildup when the pump is on but the nozzle
is closed. Do not leave the pump on for more than 10
minutes with the nozzle closed.
Never leave the pump running without fluid. Dry running
can damage the pump components.
The pump has a duty cycle of 30 minutes ON and 30
minutes OFF. Do not overheat. Allow the motor to cool
the same length of time it was in operation.
The fuel strainer and check valve assembly should be
cleaned on a regular basis or if low flowrate is noticed.
If the pump becomes too hot, a thermal protector will
automatically shut the motor off and prevent operation
until it cools.
CAUTION
Always turn the pump off if the thermal protector
trips. If left on, the pump will automatically reset
when cool and start pumping.
A. MOTOR DOES NOT RUN.
1. No electrical power to pump. Check breaker,
switchbox and wiring.
2. Thermal protector tripped. Allow motor to cool.
Thermal protector will automatically reset.
3. Rotor or vanes jammed. Remove coverplate
and check for damage or obstruction.
B. MOTOR RUNS, BUT NO FLOW.
1. Tank level low. Add fuel to tank.
2. Clogged filter assembly. Remove and clean
filter assembly.
3. Clogged or broken suction pipe. Remove
pump and clear suction pipe, replace as need-
ed.
4. Broken shaft key. Replace shaft key. Check
rotor or vanes for obstruction.
C. PUMP FAILS TO PRIME.
1. Air leak in system. Check for air leaks at all
joints.
2. Bypass valve stuck open. Remove bypass
valve and clean or replace as needed.
3. Check valve stuck open. Remove check valve
and clean or replace as needed.
4. Rotor or vanes worn. Check rotor and vanes
for excessive wear.
D. LOW FLOWRATE.
1. Low voltage. Check incoming line voltage.
2. Clogged filter assembly. Clean filter assembly.
3. Air leak in system. Check for air leaks at all
joints.
4. Bypass valve stuck open. Remove bypass
valve and clean or replace as needed.
5. Rotor or vanes worn. Check rotor and vanes
Figure 3
for excessive wear.
6. Outlet is blocked. Check all accessories for
blockage.
7. Clogged or broken suction pipe. Remove
pump and clear suction pipe, replace as need-
ed.
E. MOTOR STALLS WHEN NOZZLE IS CLOSED.
1. Bypass valve stuck closed. Remove bypass
valve and clean or replace as needed.
2. Rotor or vanes worn. Check rotor and vanes
for excessive wear.
3. Low voltage. Check incoming line voltage.
F. FUEL LEAKAGE.
1. Threaded joint loose. Check and reseal
threaded joint.
2. Insufficient bolt torque. Retighten bolts.
3. Lost or damaged O-rings. Check O-rings for
damage. Replace as needed.
4. Shaft seal worn or damaged. Fuel leakage
from drain hole indicates shaft seal needs to
be replaced.
G. MOTOR OVERHEATS.
1. Pumping high viscosity fluids. Pump only low
viscosity fluids.
2. Clogged filter assembly. Clean filter assembly.
3. Clogged or broken suction pipe. Remove
pump and clear suction pipe. Replace as needed.
TROUBLESHOOTING
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