DeVillbiss Air Power Company D21684 Pressure Washer User Manual


 
18 ENG
MAINTENANCE (cont'd)
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:
Multi-Reg Wand/Lance:
1. Shut off the pressure washer and turn off the water
supply.
2. Disconnect spark plug wire.
3. Pull trigger on gun handle to relieve any water pressure.
4. Disconnect the wand/lance from the gun.
5. Remove the nozzle from the end of the wand with the
2mm allen wrench provided as shown in Figure 16.
6. Clean the nozzle using the nozzle cleaner provided or a
straightened paper clip. Insert into the nozzle end and work
back and forth until obstruction is removed. See Figure 17.
7. Direct water supply into nozzle end to backflush loosened
particles for 30 seconds. See Figure 18.
8. Reassemble the nozzle to the wand. Tighten securely to
prevent leaks.
9. Reconnect wand/lance to gun and turn on water supply.
10. Start pressure washer and place wand/lance into high
pressure setting to test.
Dual Lance/Hi-Low Lance/Quick Connect Lance:
1. Shut off the pressure washer and turn off the water supply.
2. Disconnect spark plug wire.
3. Pull trigger on gun handle to relieve any water pressure.
4. Disconnect the wand/lance from the gun.
5. Remove the high-pressure nozzle from the lance. Remove
any obstructions with the nozzle cleaning tool provided and
backflush with clean water.
Note: For pressure washers with Dual-Lance wands as
shown here, do not remove the soap nozzle. The soap
nozzle can be identified as having the larger hole in the
nozzle. See Figure19.
6. Direct water supply into nozzle end to backflush loosened
particles for 30 seconds.
7. Reassemble the nozzle to the lance using teflon tape to
prevent leaks. Note: Teflon tape is only needed on
nozzles for dual-lance and hi/low wands. Tighten
securely.
8. Reconnect wand/lance to gun and turn on water supply.
9. Start pressure washer and place wand/lance into high
pressure setting to test.
Figure 16
Figure 17
Figure 18
Figure 19
Dual Lance
Soap
Nozzle