DeVillbiss Air Power Company Devap DVH3000 - Manual (Page 15)

15 - ENG A16091
MAINTENANCE
Risk of burn hazard.
When performing
maintenance, you may be exposed
to hot surfaces, water pressure or
moving parts that can cause serious
injury or death.
Risk of fire hazard.
Always disconnect,
spark plug wire, let the engine
cool and release all water pressure
before performing any maintenance
or repair. The engine contains
flammable fuel. Do not smoke
or work near open flames while
performing maintenance.
To ensure efficient operation and
longer life of your pressure washer, a
routine maintenance schedule should
be prepared and followed. If the
pressure washer is used in unusual
conditions, such as high-temperatures
or dusty conditions, more fre quent
maintenance checks will be required.
ENGINE
Consult the Engine Owners Manual for
the man u fac tur er's recommendations
for any and all maintenance. NOTE:
The engine drain plug is located at the
rear of the unit.
PUMP
The oil in the high pressure pump was
designed to last the life of the pump.
If there is a problem with the pump
contact an Authorized Service Center.
NOZZLE CLEANING
If the nozzle becomes clogged
with foreign materials, such as dirt,
excessive pressure may develop. If
the nozzle becomes partially clogged
or restricted, the pump pressure will
pulsate. Clean the nozzle immediately
using the nozzle kit supplied and the
following instructions:
1.
Shut off the pressure washer and
turn off the water supply.
2. Pull trigger on gun handle to
relieve any water pressure.
3. Disconnect the spray wand from
the gun.
4. Remove the high-pressure nozzle
from the spray wand. Remove
any obstructions with the nozzle
cleaning tool provided and
backflush with clean water.
5. Direct water supply into spray
wand to backflush loosened
particles for 30 seconds.
6. Reassemble the nozzle to the
wand.
7. Reconnect spray wand to gun and
turn on water supply.
8. Start pressure washer and place
spray wand into high pressure
setting to test.
HOW TO CLEAN THE WATER
INLET FILTER
This screen filter should be checked
periodically and cleaned if necessary.
1. Remove
filter
by grasping
end and
removing it
from water inlet
of pump as
shown.
2. Clean filter by flushing it with
water on both sides.
3. Re-insert filter into water inlet of
pump. NOTE: Cone side faces
out.
NOTE: Do not operate pressure washer
without filter properly installed.
Filter Screen