Great Plains Industries M-150S Guía De Operaciónes página 3

4. Switch or electrical connections faulty. (Models
M-150S and M-180S) Inspect for damaged motor
protector, defective wiring or switch, or improper elec-
trical connections. Replace as needed and reinstall.
5. Circuit breaker tripped. Turn power off at source.
Inspect the pump thoroughly; clean or repair. Reset
circuit breaker by turning the power switch off then
back on.
B. MOTOR RUNS BUT DOES NOT PUMP
1. Suction pipe clogged, damaged, or missing. Re-
move pump from tank. Inspect suction pipe. Clean or
replace, as necessary.
2. Gear coverplate or O-ring damaged. Remove and
inspect the coverplate and O-ring. Replace as neces-
sary. Refer to the Repair Section on servicing O-rings.
3. Strainer clogged or defective. Remove strainer
coverplate. Remove and clean strainer. Install again.
4. Bypass poppet O-ring worn or missing. Inspect
the O-ring, using instructions in the Repair Section.
Replace, if necessary.
5. Bypass poppet O-ring dirty. Remove poppet as-
sembly and clean poppet and cavity.
6. Bypass poppet binding or damaged. Using instruc-
tions in the Repair Section, remove the bypass pop-
pet, spring, and O-ring. Clean cavity. Inspect and
replace components, as necessary.
7. System air leak. Tighten all pump fittings and con-
nections. Inspect suction pipe for leaks or damage.
8. System air lock. This can occur if external filter,
meters, or an off-the-shelf automatic nozzle is being
used. To correct, remove the pipe plug in the top
outlet port and fill the gear cavity with fuel. Use of a
factory-supplied automatic nozzle is recommended.
9. Poor connections or low voltage. Make sure electri-
cal connections are secure. Also check battery voltage.
10. Fuel level low. Fill tank.
11. Motor running backwards due to incorrect polar-
ity. Connect red wire to positive (+). Gear with key
should counterclockwise.
C. LOW FLOW RATE
1. Poor connections or low voltage. Make sure elec-
trical connections are secure. Also check battery
voltage.
2. Strainer partially clogged. Remove the strainer
coverplate. Remove and clean the strainer. Install again.
3. Suction pipe clogged or damaged. Remove pump
from tank. Inspect suction pipe. Clean or replace, as
necessary.
4. Fuel tank empty. Fill tank.
5. Using off-the-shelf automatic nozzle. Factory-sup-
plied automatic nozzle is recommended.
6. System air leak. Tighten all pump fittings and con-
nections. Inspect suction pipe for leaks or damage.
Replace, as necessary.
7. Suction pipe too close to tank bottom. Suction pipe
must have at least 1/4 inch (0.6 cm) clearance from
the bottom of the tank.
8. Bypass poppet spring weak. Using instructions in
the Repair Section, remove the bypass poppet and
inspect spring. Replace, if necessary.
D. MOTOR STALLS WHEN OPERATING IN BYPASS
MODE
1. Motor protector activated. Turn off switch. Allow
motor to cool, then turn on switch.
All manuals and user guides at all-guides.com
2. Gears locked. Remove gear coverplate and inspect
gears and drive key. Make sure gears turn freely with
the key removed. Replace, if worn.
3. Wiring defective. Use Wiring instructions in the In-
stallation Section to ensure proper connections.
4. Bypass poppet binding or damaged. Using instruc-
tions in the Repair Section, remove the bypass pop-
pet, spring, and O-ring. Clean cavity. Inspect com-
ponents and replace, as necessary.
5. Motor defective. Replace motor.
E. SWITCH FAILS TO OPERATE MOTOR
1. Switch or electrical connections faulty (Model M-
240S). Inspect for a blown fuse, defective wiring or
switch, or improper electrical connections. Replace
or install again, as necessary.
2. Motor burned out. Replace motor.
3. Motor protector activated. Turn off switch. Allow
motor to cool, then turn on switch.
4. Switch or electrical connections faulty (Models M-
150S and M-180S). Inspect for damaged motor pro-
tector, defective wiring or switch, or improper elec-
trical connections. Replace as needed and reinstall.
F. RAPID OVERHEATING OF MOTOR
1. Duty cycle too long. Pump operation should not
exceed the standard duty cycle of 30 minutes ON,
and 30 minutes OFF. Allow the pump to cool for 30
minutes.
2. Strainer clogged. Remove strainer coverplate. Re-
move and clean strainer. Install again.
3. Suction pipe clogged or damaged. Remove pump
from tank. Inspect suction pipe. Clean or replace, as
necessary.
4. Gears worn. Remove gear coverplate and inspect
gears and drive key. Make sure gears turn freely with
key removed. Replace, if necessary.
5. Fuel level low. Fill tank.
6. Running too long in bypass mode. Limit bypass
operation to 10 minutes.
SERVICE
This GPI product is covered by a limited one year warranty.
For warranty, parts, or other service information, please con-
tact your local distributor or dealer. If you need further as-
sistance, contact GPI Customer Service Department in
Wichita, Kansas, during normal business hours.
Tel: 316-686-7361
Fax: 316-686-6746
CAUTI O N
Do not return the pump without authority from the
Customer Service Department. Due to strict govern-
ment regulations, GPI cannot accept pumps unless
they have been drained and cleaned.
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