Eriez FJ-310A, Installation, Operation And Maintenance Instructions

Sump Cleaner

25

pROBlEM

pART TO CHECK

pOSSIBlE SOluTION

Does Not Start or Run

1. Power supply

1.   On LP units, check for dead battery; on electric units,  

ensure plug is fully seated in wall outlet of the proper 
voltage.

2. Gas bottle

2.   On LP units, make sure gas bottle is not empty, that bottle 

valve is fully open and that hose is tight.

3. Float

3.   Ensure that float is unobstructed and operating; if tank 

is full, float switch will not allow unit to start; switch to 
discharge mode.

4. Air cleaner

4.   On engine-driven units, make sure air cleaner element  

is clean; clean or replace as needed.

5. Fuelock filter/regulator

5A. On LP units, faulty fuelock filter or regulator;  

repair or replace.

5B. Check o-ring for wear on valve operating pin inside  

fuelock filter; replace.

6. Vacuum leak

6.   Check vacuum hose and fittings for leaks.

7. Fuses

7.   Check electrical supply system fuses or circuit breakers; 

replace if necessary.

8. Motor brushes

8.   On 120V units, check brushes; replace as needed.

Insufficient or  
No Suction

1. Basket

1A. Check for full basket; empty.
1B. Check if basket liner is blinded off, clean or replace.

2. Hoses

2A. Check for obstructions; physically remove.
2B. Check for cracks or holes: replace.

3. Air leakage

3.   Check all hose connections for tightness; make sure female 

quick disconnect fittings have gaskets in place; check top 
gasket on filter basket and repair or replace.

4. Regulator

4.   Vacuum regulator could be out of adjustment; contact a 

Service Technician at Eriez HydroFlow.

5. Discharge nozzle

5.   Check that discharge nozzle is fully closed and in place.

6. Pneumatic muffler

6.   On LP units, ensure pneumatic muffler on four-way valve is 

not covered with dirt/oils; clean or replace clean or replace.

7. Blower mufflers

7.   Check blower mufflers for oil and coolant first.  

If plugging: replace.

8.  Air supply

8.   On Air Venturi units, check air supply pressure; 100-125 PSI 

@ 32-47 CFM, 1/2" ID hose required.

9.  Air venturi silencer

9.   Check silencer on air venturi powerhead for blockage by  

dirt/oil; clean or replace.

10. Motor

10. For 120 Volt electric units, check black RFH hose that 

connects motor to powerhead enclosure and make sure  
it is tight and has no cracks; replace as needed.

Insufficient Discharge 
pressure

1. Suction valve

1.   Check that suction inlet ball valve is fully closed.

2. Regulator

2.   Pressure regulator could be out of adjustment;  

contact a Service Technician at Eriez HydroFlow.

Sump Cleaner Troubleshooting Chart