Grizzly G8297, G8299, G8298 Troubleshooting, Symptom Possible Cause Corrective Action

Page 23

TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYMPTOM

 

 

 

 

 

 

POSSIBLE CAUSE

 

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pump

Motor

Will

Not

 

 

1.

Low voltage.

 

 

1.

Check power line for proper voltage.

 

 

Start

 

 

 

 

 

 

 

 

2.

Open circuit in motor, switch or

 

 

2.

Inspect all lead connections on motor, switch and

 

 

 

 

 

 

 

 

 

 

 

 

cord.

 

 

 

cord for loose or open connections.

 

 

 

 

 

 

 

 

 

 

 

3.

Tank already pressurized.

 

 

3.

Motor will not start if tank pressure is too high.

 

 

 

 

 

 

 

 

 

 

 

4.

Thermal overload switch.

 

 

4.

Thermal overload switch has tripped, wait for motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to cool, then reset switch by pressing red button.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pump

 

Motor

Starts;

But

 

 

1.

Short circuit in line cord or plug.

 

 

1.

Inspect cord or plug for damaged insulation and

 

 

Fuses

Blow

or

 

Circuit

 

 

 

 

 

 

 

shorted wires.

 

 

Breakers Trip

 

 

 

 

 

 

2.

Short circuit in motor or loose

 

 

2.

Inspect all connections on motor for loose or shorted

 

 

 

 

 

 

 

 

 

 

 

 

connections.

 

 

 

terminals or worn insulation.

 

 

 

 

 

 

 

 

 

 

 

3.

Incorrect fuses or circuit break-

 

 

3.

Install correct fuses or circuit breakers.

 

 

 

 

 

 

 

 

 

 

 

 

ers in power line.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

Pressure

At

The

 

 

1.

Air leaks in flexible hoses.

 

 

1.

Check air hoses and all connections for leaks.

 

 

Tool

 

 

 

 

 

 

 

 

2.

Pressure gauge bad

 

 

2.

Check pressure in line with known good gauge.

 

 

 

 

 

 

 

 

 

 

 

3.

Pressure regulator bad.

 

 

3.

Adjust pressure regulator, if no improvement inspect

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

regulator for leaks or replacement.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

Pressure

At

The

 

 

1.

Air leaks in tanks or delivery

 

 

1.

Check air tanks, pipes and all connections for leaks.

 

 

Tanks

 

 

 

 

 

 

 

 

pipes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Drain cock open

 

 

2.

Close drain cock.

 

 

 

 

 

 

 

 

 

 

 

3.

Safety valve releasing below

 

 

3.

Replace safety valve.

 

 

 

 

 

 

 

 

 

 

 

 

150 PSI.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Air filter clogged.

 

 

4.

Inspect and clean air filter.

 

 

 

 

 

 

 

 

 

 

 

5.

Gaskets leaking

 

 

5.

Check gaskets on cylinder head assembly, repair or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

replace as needed.

 

 

 

 

 

 

 

 

 

 

 

6.

Worn rings.

 

 

6.

Inspect and replace pump piston rings.

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor Knocking

 

 

1.

Improper oil level.

 

 

1.

Check oil level and add oil.

 

 

 

 

 

 

 

 

 

 

 

2.

Air filter clogged.

 

 

2.

Inspect and clean air filter.

 

 

 

 

 

 

 

 

 

 

 

3.

Piston assembly loose.

 

 

3.

Inspect and repair piston and connecting rod.

 

 

 

 

 

 

 

 

 

 

 

 

 

Air Leaks From Pressure

 

 

1.

Faulty check valve.

 

 

1.

Clean dirt or debris from rubber membrane of check

 

 

Switch

 

 

 

 

 

 

 

 

 

 

 

 

valve after removing top nut.

 

 

 

 

 

 

 

 

 

 

 

2.

Faulty pressure switch.

 

 

2

Repair or replace pressure switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

Air Is Dirty Or Has

 

 

1.

Tanks not drained.

 

 

1.

Open drain cocks on both tanks and make certain all

 

 

Excessive Moisture

 

 

 

 

 

 

 

 

condensation water is drained out.

 

 

 

 

 

 

 

 

 

 

 

2.

Delivery pipes are dirty.

 

 

2.

Remove delivery pipes, clean out and replace.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor Runs Hot

 

 

 

 

 

1.

Cooling Fins Dirty.

 

 

1.

Clean cylinder head fins and also remove any accu-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mulated dirt or grease from motor area.

 

 

 

 

 

 

 

 

 

 

 

2.

Air filter clogged.

 

 

2.

Inspect and clean air filter.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pressure Relief

Valve

 

 

1.

Faulty pressure switch, unit is

 

 

1.

Turn compressor off, unplug from power supply,

 

 

Stays

 

Open

And

Motor

 

 

 

trying to overpressure the tank

 

 

 

drain tank. DO NOT USE until switch is repaired or

 

 

Won’t Stop Running

 

 

 

 

 

 

 

 

replaced.

 

 

 

 

 

 

 

 

 

 

 

2.

Faulty pressure relief valve.

 

 

2.

Relief valve is relieving pressure too early, test pres-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sure relief and repair or replace,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G8297/G8298/G8299 Air Compressors

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Image 23
Contents Model G8297/G8298/G8299 Contractor Grade AIR CompressorsPage Table Of Contents Safety Instructions For Power Tools Safety11-12 13-16 17-20 21-30 Length AMP RatingAdditional Safety Instructions For Air Compressors Grounding Circuit Requirements110V Operation Extension CordsCommentary IntroductionUnpacking Oil sump and dipstick General Pressure safety relief valveThermal protection typical placement OperationsPressure regulator and gauge G8299 starting switches and gaugeStarting Pressure Regulator CFM Connecting ToolsTypical location of drain cocks MaintenanceEach Use Checking oil level with dipstickAir filter cover and foam element After First 50 HoursWeekly Every 300 HoursPressure Limit Adjustment Closure Parts List G8297 AIR Compressor G8297/G8298/G8299 Air Compressors Parts List G8298 AIR Compressor G8297/G8298/G8299 Air Compressors Parts List G8299 AIR Compressor Symptom Possible Cause Corrective Action TroubleshootingWarranty and Returns Warranty Card Send a Grizzly Catalog to a friend Name Street CityStateZip Grizzly INDUSTRIAL, INC