DeVillbiss Air Power Company MGP-1218 - Manual (Page 9)

9
TROUBLESHOOTING GUIDE
PROBLEM
Motor will not start and there is no
humming sound
Power source circuit continues to trip
or blow fuses
Motor hums but will not start
No low pressure detergent delivery
Unit does not reach required pres-
sure
Unit is noisy
Pressure fluctuates without opening
gun
1. Not plugged in.
2. "RESET" button on GFCI not
pushed.
3. Circuit breaker has tripped or
fuse is blown.
1. Too much load already on
circuit.
1. Extension cord is too long or of
improper gauge, causing voltage
drop.
2. Pump is stuck due to dirt,
mineral build up, or ice.
3. Motor malfunction
1. Nozzle set on high pressure.
2. Siphon hose or filter is plugged.
1. Restricted, or insufficient water
supply.
2. Unsuitable or worn out nozzle.
1. Restricted, insufficient water supply,
or air in the water line.
2. Water temperature is too high.
3. Pump has operated more than 5
minutes, without pulling trigger.
4. Pump sucking air.
1. Water leak in high pressure fittings,
hose, or gun.
1. Plug in.
2. Push "RESET" button.
3. Reset breaker or replace fuse.
1. Reduce load on circuit.
2. Try another 15 amp circuit.
1. See section on extension cords
(See page 6).
2. Unplug unit. If temp is below
freezing do not use. Thaw in a
warm area. Turn motor manually
by "Kick Start". (See page 6)
3. Take to authorized service
center (See page 2)
1. Push nozzle forward.
2. Unplug siphon hose.
1. Check supply hose, faucet and
inlet screen. Must be connected
to water source which provides
1.8 gal. water per minute.
2. Replace nozzle.
1. Check supply hose, faucet, and
inlet screen.
2. Do not use water from a hot
water source, use water only
from a cold water faucet.
3. Pull trigger at least 30 seconds
every 5 minutes.
4. Check suction manifold.
1. Use teflon tape or pipe sealant to
tighten hose fitting, replace hose
or gun. If problem continues take
to authorized service center.
REMEDY CAUSE