9.800-079.0 • Rev. 04/10
OPERA
T
OR’S MANU
AL
PRESSURE W
ASHER
12
PREVENTATIVE MAINTENANCE
1. Check to see that the water pump is properly lu bri -
cat ed.
2. Follow Winterizing Procedures to prevent freeze
dam age to the pump and coils.
3. Always neutralize and fl ush detergent from system
af ter use.
4. If water is known to be high in mineral content, use
a water softener in your water system or de-scale
as needed.
5. Do not allow acidic, caus tic or abrasive fl uids to be
pumped through system.
6. Always use our high grade quality cleaning prod-
ucts.
7. Never run pump dry for extended periods of time.
8. Use clean fuel: kerosene, No. 1 fuel oil or diesel.
Re place fuel fi lter every 100 hours of operation.
Avoid water contaminated fuel as it will seize up
the fuel pump.
9. If machine is operated with smoking or eye burning
ex haust, coils will soot up, not letting water reach
max i mum operating temperature. (See section on
Air Adjustments.)
10. Never allow water to be sprayed on or near engine
or burner assembly or any electrical com po nent.
11. Periodically delime coils as per instructions.
12. Check to see that engine is properly lubricated.
It is advisable, periodically, to visually inspect the
burn er. Check air inlet to make sure it is not clogged or
blocked. Wipe off any oil spills and keep this equipment
clean and dry.
The areas around the pressure washer should be kept
clean and free of combustible materials, gasoline and
other flam ma ble vapors and liquids.
The flow of combustion and ventilating air to the burner
must not be blocked or obstructed in any manner. Con-
sult factory if vent stacking is going to be used.
MAINTENANCE AND SERVICE
Unloader Valves:
Unloader valves are preset and tested at the fac to ry
be fore shipping. Oc ca sion al adjustment of the unloader
may be nec es sary to main tain correct pressure. Call
your lo cal dealer for assistance.
Winterizing Procedure:
Damage due to freezing is not covered by warranty. Ad-
here to the following cold weather pro ce dures when ev er
the wash er must be stored or operated out doors under
freez ing conditions.
During winter months, when tem per a tures drop below
32°F, protecting your machine against freezing is nec-
es sary. Store the machine in a heated room. If this is not
pos si ble then mix a 50/50 solution of anti-freeze/water
into a 5 gal lon buck et. Place a short section of garden
hose into the buck et and connect it to the ma chine.
El e vate the buck et and turn the pump on to si phon the
anti-freeze through the ma chine. If com pressed air is
available, an air fitting can be screwed into the inlet
con nec tor and, by injecting com pressed air, all water
will be blown out of the system.
High Limit Hot Water Thermostat:
For safety, each machine is equipped with a high limit
con trol switch. In the event that the temperature of the
water should exceed its operating temperature, the
high limit con trol will turn the burner off until the water
cools.
Pumps:
Use only SAE 30W non-detergent oil. Change oil after
the first 50 hours of use. Thereafter, change the oil ev ery
three months or at 500 hour intervals. Oil level should be
checked by using the dipstick found on top of the pump
or the red dot visible through the oil gauge win dow. Oil
should be maintained at that level.
Cleaning of Coils:
In alkaline water areas, lime deposits can accumulate
rap id ly inside the coil pipes. This growth is increased by
the extreme heat build up in the coil. The best pre ven tion
for liming conditions is to use high quality cleaning de-
ter gents. In areas where alkaline water is an extreme
prob lem, pe ri od ic use of our Deliming Powder (part
#9-028008) will remove lime and other deposits before
coil becomes plugged. (See Deliming Instructions for
use of Deliming Powder.)
Deliming Coils:
Periodic flushing of coils is recommended.
1. Fill a container or optional fl oat tank with 4 gallons
of wa ter, then add 1 lb. of deliming powder. Mix
thor ough ly.
2. Remove wand assembly from spray gun and put
spray gun into container. Secure the trigger on the
spray gun into the open position.
3. Attach a short section (3-5 ft.) of garden hose to
ma chine to siphon solution from an elevated con-
tain er. Turn pump switch on, allowing solution to
be pumped through coils back into the container.
So lu tion should be al lowed to circulate 2-4 hours.
4. After circulating solution fl ush entire system with
fresh water. Reinstall wand assembly to spray
gun.
MAINTENANCE
