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Rev. A  92149901

8

TROUBLESHOOTING

SYMPTOM

PROBABLE CAUSE

CORRECTIVE ACTION

A.  MOTOR DOES  

NOT RUN

1.  Auxiliary temperature-limiting device 

tripped

Turn pump switch off. Allow motor to cool approximately 30 minutes. Device 

resets automatically. Try again.

2.  Switch’s circuit breaker tripped

Turn power off at source. Determine source of high amp draw. Correct problem. 

Make sure pump switch is in off position before restoring power. Restore power 

to pump. Circuit breaker is reset  manually by turning pump’s power switch off 

and on

3.  Switch defective

Remove switch coverplate and inspect switch. Replace, if necessary.

4.  Motor burned out

Replace motor as described in the Repair Section.

B.  MOTOR RUNS  

BUT DOES NOT 

PUMP FLUID

1.  Drive key broken

Remove gear coverplate and replace drive key. Make sure gears turn freely 

with the key removed.

2.  Suction pipe clogged, damaged, or 

missing

Remove pump from tank. Inspect suction pipe. Clean or replace, as necessary.

3.  Gear coverplate or O-ring damaged

Remove and inspect the coverplate and O-ring. Replace, as necessary. Refer 

to the Repair Section on Servicing O-rings.

4.  Strainer clogged or defective

Remove strainer coverplate. Remove and clean strainer. Install again.

5.  Bypass poppet O-ring worn or missing Inspect the O-ring, using instructions in the Repair Section. Replace, if 

necessary.

6.  Bypass poppet O-ring dirty

Remove poppet assembly and clean poppet and cavity.

7.  System air leak

Tighten all pump fittings and connections. 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 electrical connections are secure. Check power source.

10. Fuel level low

Fill tank.

11.  Bypass poppet binding or damaged

Remove the bypass poppet, spring, and O-ring. Clean cavity. Inspect and 

replace components, as necessary.

C. LOW 

FLOWRATE

1.  Poor connections or low voltage

Make sure electrical connections are secure. Also check power source.

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-supplied automatic nozzle is recommended.

6.  System air leak

Tighten all pump fittings and connections. 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 in. (0.6 cm) clearance from bottom of the 

tank.

8.  Bypass poppet spring weak

Remove the bypass poppet and inspect spring. Replace, if necessary.

9.  Discharge hose too long

Long hoses reduce flow rate. Shorten hose.

D. MOTOR 

STALLS WHEN 

OPERATING IN 

BYPASS MODE

1.  Running too long in bypass mode

Limit bypass operation to 10 minutes.

2.  Gears worn

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 Installation Section to ensure proper connections.

4.  Bypass poppet binding or damaged

Remove the bypass poppet, spring, and O-ring. Clean cavity. Inspect 

components and replace, as necessary.

5.  Motor defective

Replace motor as described in the Repair Section

E. RAPID 

OVERHEAT 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. Remove 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

Содержание M-1115S

Страница 1: ...ne methanol ethanol diesel fuel up to 20 biodiesel and kerosene Please take all due pre cautions when handling these flammable liquids Your safety is important to us Also to assure the longest possibl...

Страница 2: ...4 8 feet 1 5 m with diesel 5 8 feet 1 8 m with gasoline If you require a greater initial prime height coat the gears with fluid by removing the plug on the top of the pump and pour a small quantity o...

Страница 3: ...by a licensed electrician in accordance with national state and local electrical codes regarding Class I Division 1 requirements as well as NFPA Code 70 and 30 Other codes may apply Install UL Listed...

Страница 4: ...emicals or herbicides Dispensing any fluid other than those listed in this manual will damage the pump Use of the pump with unauthorized fluids will void the warranty To Clean or Replace Strainer Turn...

Страница 5: ...thepoppetcavitythrough the top outlet port PushdownonthepoppetuntilthepoppetO ring is exposed inside the housing Figure 7 FIGURE 7 Using a clean cloth rotate the poppet and clean it thoroughly To remo...

Страница 6: ...ck wires to the switch Cut the wires close to the wire nut leaving the maximum possible length to the pump Loosen the hex nut on the switch mounting plate and remove the defective switch Strip approxi...

Страница 7: ...ntil the motor is flush against the pump housing Tighten the motor to the pump housing Check for proper installation by working a 0015 feeler gauge around the motor flange The gauge shall not fit be t...

Страница 8: ...ed Remove the bypass poppet spring and O ring Clean cavity Inspect and replace components as necessary C LOW FLOWRATE 1 Poor connections or low voltage Make sure electrical connections are secure Also...

Страница 9: ...Cover Gasket 1 13 119096 4 Switch and Circuit Breaker Assembly 1 14 110026 6 Switch Coverplate O Ring 1 15 110276 02 Switch Coverplate Assembly 1 16 110032 1 Union Ring Gasket 1 17 11030302 Cover Noz...

Страница 10: ...e defaced to indicate that the equipment may no longer meet the requirements for ULListing This does not apply to prod ucts serviced outside the factory under the UL program for Rebuilt Motors for Use...

Страница 11: ......

Страница 12: ...duct has been altered or modified outside the warrantor s duly appointed representative B the product has been subjected to neglect misuse abuse or damage or has been installed or operated other than...

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