Magnum TexFinish 246185, Repair Manual

Troubleshooting

309797P

17

Troubleshooting

Pressure Relief, page 5

Problem

Cause

Solution

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 5

Too many items on same circuit

Unplug other items from circuit

Extension cord too long or wrong 
gauge

Use a different extension cord. Refer 
to Grounding and Electric Require-
ments, page 5

Breaker tripped

Reset breaker

Pump won’t pump material

Selector switch in wrong position

Move selector switch to correct posi-
tion for application

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 5. Remove 

gun from hose. Clean gun.

RotoFlex pump worn out

Replace hose. Recommended hose 
replacement - once a year or every 
3000 gallons.

Pump cold or material frozen in pump Move pump to warm room and allow 

it to warm up or run hot water through 
sprayer.

Motor start capacitor failure

Replace capacitor and restart

Material runs out of bottom of sprayer RotoFlex pump 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 5.

Gun needle plugged

Clean needle and retry.

Lines not connected

Check all quick disconnect connec-
tions to gun and hoses

Damaged hose

Replace hose

Worn compressor

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