S Topping The P Ressure W Asher - AR Blue Clean AR620 Maintenance Manual

s
tarting the
1. Turn on the water supply to the proper gpm flow rate.
2. Plug power cord into properly grounded outlet.
3. Turn nozzle to low pressure and squeeze trigger.
4. Turn "ON/OFF" switch to the "ON" position and wait until a
constant stream of water comes out. Adjust nozzle sleeves to
achieve proper pressure and coverage area.
d o
Uring Peration
1. Observe all safety instructions through this manual.
2. Do not allow the machine to run with the wand not squeezed,
"OFF", for more than 2 minutes (30 seconds with water
temperature above 80° F.)
When the wand trigger is released the pump
 ! does not stop pumping. Water is routed through
a bypass circuit which builds up heat. If the water
temperature becomes too high, damage to the
seals, packings and other parts may result.
3. Check pump, connections and hose for water and oil leaks.
Replace worn parts.
s
toPPing the
1. Rinse and close the downstream chemical injector.
2. Turn the motor power switch to the "OFF" position.
3. Turn off water supply.
4. Squeeze the trigger on the wand to relieve the system water
pressure and drain as much water as possible.
5. Spray the backside of the nozzle with a lubricant and work the
nozzle back and forth from high pressure to low pressure. This
will help keep the nozzle from sticking.
6. Follow this procedure each time the machine is stopped. Having
the nozzle set at low pressure and squeezing the trigger on the
gun when you start the unit will reduce the startup load of the
unit.
P W
ressUre asher
P W
ressUre asher
t
roUBleshooting
l n P
oW ozzle ressUre
c
aUses
Plugged nozzle.
Insufficient flow of water to the pump.
Plugged inlet screen.
Using restrictive supply hose.
s P
Urging ressUre
c
aUses
Restricted supply by under-sized
fittings or inlet.
Insufficient flow of water to the pump.
Air trapped in the pump head.
s i n W
oaP njector ot orking
c
aUses
Adjustable nozzle set on high pressure
mode.
Back pressure from the addition of
extra hose.
Detergent adjustment knob turned off.
Plugged injector valve.
s
olUtions
Clean and check for blockage.
Increase water flow to the pump.
Pull out and clean screen carefully.
Use larger diameter supply hose.
s
olUtions
Use larger fittings and clean the inlet
screen.
Increase water flow to the pump.
Set nozzle on low pressure setting,
squeeze gun trigger before starting
machine. Start engine and run water
until air is purged out of the system.
s
olUtions
Set nozzle to low pressure. Injector
only works on low pressure setting.
Do not use additional high pressure
hose.
Turn detergent adjustment knob
counter-clockwise to open.
Check and clean the injector.