8.917-208.0 • HOT • Rev. 05/17
OPERA
TOR’S MANU
AL
PRESSURE
W
ASHER
12
MAINTENANCE & SERVICE
PREVENTATIVE
MAINTENANCE
1. Check to see that water pump is properly lubricated.
2. Follow Winterizing Procedures to prevent freeze
damage to pump and coils.
3. Always neutralize and flush detergent from system
after use.
4. If water is known to be high in mineral content, use
a water softener on 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 Landa cleaning
products.
7. Never run pump dry for extended periods of time.
8. Use clean fuel-kerosene, No. 1 fuel oil, or diesel.
Replace fuel filter every 100 hours of operation.
Avoid water contaminated fuel as it will seize up the
fuel pump. Desoot coils monthly or use an additive
if diesel is being used.
9. If machine is operated with smoky or eye burning
exhaust, coils will soot up, not letting water reach
maximum operating temperature (see Burner Ad-
justments).
10. Never allow water to be sprayed on or near the
motor, the burner assembly or any electrical com-
ponent.
11. Periodically delime coils per instructions.
12. Check to see that the motor 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 this
equipment clean and dry.
The areas around the Landa washer should be kept
clean and free of combustible materials, gasoline
and other flammable vapors and liquids.
The flow of combustion and ventilating air to the
burner must not be blocked or obstructed in any
manner.
MAINTENANCE AND SERVICE
Unloader Valves
Unloader valves trap pressure in the line when a
spray gun is closed. Unloader valves are preset and
tested at the factory before shipping. Tampering with
the factory setting may cause personal injury and/
or property damage, and will void the manufacturer's
warranty.
Winterizing Procedure
Damage due to freezing is not covered by warranty.
Adhere 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 necessary. Store the machine in a heated room.
If this is not possible then mix a 50/50 solution of
antifreeze and water into a 5 gallon bucket. Place
a short section of garden hose into the bucket and
connect it to the machine. Elevate the bucket and
turn the pump on to siphon the antifreeze through
the machine. If compressed air is available, screw an
air fitting into the inlet connector. 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 control switch. In the event the temperature of
the water should exceed its operating temperature,
the high limit control will turn the burner off until the
water cools.
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. Oil should be maintained at that level.
Cleaning of Coils
In alkaline water areas, lime deposits can accu-
mulate rapidly inside the coil pipes. This growth is
increased by the extreme heat build up in the coil.
The best preventative for liming conditions is to use
high quality cleaning detergents. In areas where
alkaline water is an extreme problem, periodic use of
Landa Deliming Powder (Landa Part #9-028008) will
remove lime and other deposits before coil becomes
plugged. (See Deliming Instructions for use of Landa
Deliming Powder.)
Deliming Coils
Periodic flushing of coils or optional float tank is
recommended.
Step 1 Fill a container or float tank with 4 gallons of
water, then add 1 lb. of deliming powder. Mix
thoroughly.
Step 2 Remove wand assembly from spray gun and
put spray gun into container or optional float
tank. Secure trigger on spray gun into the open
position.
Summary of Contents for Landa HOT 2-1100
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