Graco Inc. ti8370a User Manual

Sprayer won’t run

Power switch not on

Turn switch on.

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 3500 watt or larger generator. 
Refer to Generator Requirements, 
page 6.

Breaker tripped

Reset breaker.

Pump won’t pump material

Air lock

Open air valve on gun.

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 6. Remove 
gun from hose. Clean gun.

Pump hose worn out

Replace hose. Recommended hose 
replacement - once every year.

Pump cold

Move pump to warm room and allow 
it to warm up or run hot water through 
sprayer.

Material runs out of bottom of sprayer Pump hose worn out

Replace hose.

Loose fittings

Check and retighten all fittings.

No air from compressor

Gun air valve closed

Open gun air valve.

Low voltage

Check extension cord length and 
gauge. Replace if different than rec-
ommended. Refer to Grounding and 
Electrical Requirements, page 6.

Gun needle plugged

Clean needle and retry.

Worn compressor

Replace compressor. Contact a qual-
ified Graco Service Center.

Lines not connected

Check all quick disconnect connec-
tions to gun and hoses.

Damaged hose

Replace hose.