Sears 580.768050 - Manual (Page 11)

BEFORE EACH USE
• Check water inlet screen for damage.
• Check high pressure hose for leaks.
• Check chemical tanks and filters for damage.
• Check gun and wand assembly for leaks.
• Purge pump of air and contaminants.
• Check engine oil level.
CLEANING SYSTEM MAINTENANCE
Check and Clean Inlet Screen
Examine garden hose inlet screen. Clean if ft is
clogged or replace if It is tom.
Check High Pressure Hose
High pressure hoses can develop leaks from wear,
kinking, or abuse. Inspect hose before each use.
Check for cuts, leaks, abrasions, bulging of cover, or
damage or movement of couplings. If any of these
conditions exist, replace hose immediately.
DANGER; Never repair a high pressure hose.
Replace with hose that meets the minimum
pressure rating of your cleaning system
Check Ch^nical Reservoirs
Tank covers should snap cleanly onto tank. Ensure
chemical labels correctly identify tank contents.
Ensure that the System Rinse tank Is filled with clean
water. Ensure that Dial-A-Cleaner”* selector knob
rotates freely between each position. Examine the
tanks and replace if the filter is clogged
Check Gun and Wand
Examine hose connection to gun and make sure it is
secure. Test trigger by pressing it and making sure it
springs back into place when you release it. Put safety
latch in UP position and test trigger. You should not be
able to press trigger. Replace gun immediately if it
fails any of these tests.
Purge Pump of Air and Contaminants
To remove the air from the pump, follow these steps:
• Set up the cleaning system as described in the
ASSEMBLY section and connect the water supply.
• Remove the wand extension from the gun.
• Pull the trigger on the gun and hold until a steady
stream of water appears.
To remove the contaminants from the pump, follow
these steps:
• Set up the cleaning system as described in the
ASSEMBLY section, and connect the water supply.
• Remove the nozzle attachment from the gun.
• Start the engine according to instructions in
OPERATION section.
• Pull the trigger on the gun and hold.
• When the water supply is steady and constant,
engage the safety latch and refasten the nozzle
attachment.
N(szle Maint^iance
If the nozzle becomes restricted or clogged with
foreign materials, such as dirt, excessive pump
pressure may develop. A partially clogged nozzle can
cause a pulsing condition during use. This generally is
not a pump related problem, but rather a clogged or
partially restricted nozzle.
If the nozzle becomes clogged or partially restricted,
immediately clean the nozzle with the kit included with
your cleaning system by following these instructions:
• Shut off the engine and turn off the water supply.
■ Press trigger to relive water pressure.
• Separate the dual lance from the gun. '
• Use the wire included in the kit or a small paper
clip to free the foreign materials clogging or
restricting the nozzle.
Insert wire Into
nozzle and turn
back and fo^
to clear
obstruction.
Remove additional debris by back flushing water
supply through dual lance (Figure 2). Back flush
between 30 to 60 seconds. Back flush both lances
by turning chemical valve handle.
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Reconnect the dual lance to the spray gun.
Reconnect the water supply, turn on the water, and
start the engine.
Test the cleaning system by operating with the unit
in high and the low pressure.
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