Hotsy HSS • #8.914-412.0 • Rev. 10/11
OPERA
TOR’S MANU
AL
PRESSURE
W
ASHER
14
MAINTENANCE
PREVENTATIVE
MAINTENANCE
1. Check to see that water pump is properly
lubricated.
2. Follow winterizing instructions to prevent freeze
damage to pump and coils.
3. Always neutralize and flush detergent from system
after use.
4. If water is known to have high mineral content, use
a water softener in your water system, or de-scale
as needed.
5. Do not allow acidic, caustic or abrasive fluids to be
pumped through system.
6. Always use high grade quality cleaning products.
7. Never run pump dry for extended periods of time.
8. Use clean fuel: kerosene, No. 1 fuel oil, or Clean
or replace fuel filter every 100 hours of operation.
Avoid water contaminated fuel as it will damage the
fuel pump.
9. If machine is operated with smoky or eye burning
exhaust, coils will soot up, not letting water reach
maximum operating temperature.
10. Never allow water to be sprayed on or near the
engine or burner assembly or any electrical com-
ponent.
11. Periodically delime coils as per instructions.
12. Check to see that engine is properly lubricated.
It is advisable, periodically, to visually inspect the
burner. Check air inlet to make sure it is not clogged
or blocked. Wipe off any oil spills and keep equipment
clean and dry.
The flow of combustion and ventilating air to the burner
must not be blocked or obstructed in any manner.
The area around the washer should be kept clean
and free of combustible materials, gasoline and other
flammable vapors and liquids.
MAINTENANCE & SERVICE
Unloader Valves:
Unloader valves are preset and tested at the factory
before shipping. Tampering with the factory setting may
cause personal injury and/ or property damage, will void
the manufactuers warranty.
Winterizing Procedure:
Damage due to freezing is not covered by warranty. Ad-
here to the following cold weather procedures whenever
the washer must be stored or operated outdoors under
freezing conditions.
During winter months, when temperatures drop below
32°F, protecting your machine against freezing is neces-
sary. Store the machine in a heated room. If this is not
possible then mix a 50/50 solution of anti-freeze and
water in the float tank. Turn the engine on to siphon the
anti-freeze mixture through the machine. If compressed
air is available, an air fitting can be screwed into the
float tank by removing the float tank strainer and fitting.
Then inject the compressed air. Water will be blown
out of the machine when the trigger on the spray gun
is opened.
High Limit Hot Water Thermostat:
For safety, each machine is equipped with a tempera-
ture sensitive high limit control switch. In the event that
the water should exceed its operating temperature,
the high limit control will turn the burner off until the
water cools, then it will automatically reset itself. The
thermostat sensor is located on the discharge side of
the heating coil. The thermostat control dial is located
on the control panel.
Pumps:
Use only SAE 30 weight non-detergent oil. Change oil
after first 50 hours of use. Thereafter, change oil every
three months or at 500 hour intervals. Oil level should be
checked through use of dipstick found on top of pump,
or the red dot visible through the oil gauge window. Oil
should be maintained at that level.
Cleaning of Coils:
In alkaline water areas, lime deposits can accumulate
rapidly inside the heating coil. This growth is increased
by the extreme heat build up in the coil. The best pre-
ventative for liming conditions is to use high quality
cleaning detergents. In areas where alkaline water is an
extreme problem, periodic use of Deliming Powder (Part
#112028) will remove lime and other deposits before
coil becomes plugged. (See Deliming instructions for
use of Deliming Powder.)
Deliming Coils:
Periodic flushing of coils or optional float tank is recom-
mended.
Step 1 Fill a container with 4 gallons of water, then ..
add 1 lb. of deliming powder. Mix thoroughly. .
Pour mixture into float tank.
Step 2 Remove wand assembly from spray gun and
put spray gun into float tank. Secure the trigger
on the spray gun into the open position.
Step 3 Turn engine on, allowing solution to be pumped
through coils back into the float tank. The
solution should be allowed to circulate 2-4
hours or until the color changes.
Step 4 After circulating solution, flush the entire sys-
tem with fresh water. Clean out float tank and
then reinstall wand assembly to spray gun.
