Troubleshooting

 

Troubleshooting

 

Pressure Relief, page 7

 

 

 

 

 

Problem

Cause

Solution

 

 

 

 

 

 

Sprayer won’t run or stops intermit-

Power switch not on

Turn switch on.

tently

 

 

No power at wall outlet

Check outlet by plugging in another

 

 

 

appliance. If appliance does not

 

 

work, try another outlet.

 

 

 

 

Wrong size generator

Use a 7500 watt or larger generator.

 

 

Refer to Generator Requirements,

 

 

page 8.

 

 

 

 

Temperature too cold

Allow unit to warm up.

 

 

 

 

Too many items on same circuit

Unplug other items from circuit.

 

 

 

 

Internal thermal switch tripped

Self-resetting. Allow unit to cool down

 

 

15 minutes and restart. Usually

 

 

occurs when wrong size extension

 

 

cord is used.

 

 

 

 

Extension cord too long or wrong

Use a 12 gage extension cord or

 

gauge

remove extension cord. Refer to

 

 

Grounding and Electric Require-

 

 

ments, page 7.

 

 

 

 

Breaker tripped

Reset breaker.

 

 

 

Pump won’t pump material or low

Air lock

Open air valve on gun.

output

 

 

Mix too thick

Add water to thin material. Use Mate-

 

 

 

rial Thickness Gauge.

 

 

 

 

Loose fittings

Check and retighten all fittings.

 

 

 

 

Plugged gun

Relieve Pressure, page 7. Remove

 

 

gun from hose. Clean gun.

 

 

 

 

RotoFlex HD Pump worn out

Replace hose.

 

 

 

 

Pump cold or material frozen in pump

Move pump to warm room and allow

 

 

it to warm up or run hot water through

 

 

sprayer.

 

 

 

 

Sensor is bad

Replace, page 26

 

 

 

 

Check air system for leaks

Remove shroud and examine for air

 

 

leaks

 

 

 

 

Loose wire

Remove shroud and examine wiring

 

 

 

 

No air pressure

Rebuild compressor

 

 

 

Soft start won’t work/pump, always

Sensor is bad

Change sensor, page 26

loaded

 

 

Air leak due to bad seal keeps valve

Replace seal

 

 

open

 

 

 

 

 

Normal soft start system delay

Release trigger for 10-15 seconds.

 

 

Retry.

 

 

 

 

Switch is not operating properly

Replace switch

 

 

 

 

Damaged solenoid valve on cylinder

Check gun supply, hose and sprayer

 

 

for leaks

 

AIr leak

 

 

 

 

 

310645K

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Page 27
Image 27
Graco Inc 310645K manual Troubleshooting, Pressure Relief, Problem Cause Solution, Relieve Pressure, page 7. Remove