DeVillbiss Air Power Company MGP-1218 - Manual (Page 8)

8
MAINTENANCE AND STORAGE
Figure 3
ALWAYS DISCONNECT THE PLUG FROM THE ELECTRICAL SUPPLY BEFORE
ANY MAINTENANCE IS STARTED.
MAINTENANCE
1. WATER SCREEN:
Inspect the water screen before attaching water
supply. Clean water screen if dirty.
2. SIPHON HOSE:
If the siphon tube is used for detergent or wax
remove and place in a container of clean water.
Run clean water through the unit to flush any
detergent or wax from the pressure washer.
3. NOZZLE CLOGGED:
A clogged nozzle will cause the operating
pressure to be too high causing the pressure
washer to surge. If this happens:
1. Unplug power supply, pull trigger on gun
handle to relieve pressure, remove wand
assembly from gun assembly.
This pressure washer should be stored in such a way
to protect it from freezing. Do not store this unit out-
doors or in an area where temperatures will fall below
32ºF. This can cause extensive damage to this unit.
Drain as much water as possible as follows:
1. Stop the pressure washer, detach the water hose,
and pull the trigger on the spray handle to re-
lease the pressure in the inlet hose.
2. Restart the unit, pull the trigger, and run until
water no longer sprays out of the nozzle.
(Approximately 30 seconds)
3. Stop unit. Detach high pressure hose from unit.
Leave hose attached to wand to protect it against
accidental dropping. Pull trigger to drain water
from wand and hose, and place assembly in
storage.
*If unit has to be stored under freezing conditions a
non-toxic R.V. anti-freeze can be used to protect
from freezing.
2. Clean the nozzle with the nozzle cleaning
kit.
3. Flush wand assembly backwards with water
or compressed air.
4. If pressure is still too high, repeat steps 1-3.
4. LUBRICATION:
No lubrication is required for this pump.
Add anti-freeze as follows:
1. Be sure the unit is turned off, the water supply
hose is disconnected, and pressure has been
relieved from the gun. Do not disconnect the
high pressure hose or gun.
2. Tip the unit on end with the water inlet fitting
pointing upward, and start the motor.
3. Pour approx. 1/4 cup of non-toxic R.V. anti-freeze
down the plastic fitting where the water hose
attaches while the motor is running (See Figure 3
below). Let unit run for a few seconds.
4. Turn the unit off and pull the trigger on the gun to
relieve any pressure from the hose and gun.
5. After removing the high pressure hose, restart
the unit to displace any water remaining in the
pump.
STORAGE
HIGH PRESSURE HOSE: Damaged high
pressure hoses can burst which can
cause a potentially hazardous situation.
High pressure hoses should not be
kinked, crushed, twisted, or damaged
in any way. Replace high pressure hose
should this occur.