15
Maintenance
overcome by deflecting some of the Hot air from the
engine over the carburetor area.
NOTE: Refer to the engine manufacturer's manual for
service and maintenance of the engine.
Preventative Maintenance
1. Check to see that water pump is properly lubri-
cated.
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 descale
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
Adjustments).
10. Never allow water to be sprayed on or near the
motor, the burner assembly or any electrical
component.
11. Periodically descale coils per instructions.
12. Check to see that the motor is properly lubricate
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.
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 compressed 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 10W-40 weight non-foaming oil. Change
oil after first 50 hours of use. Thereafter, change oil
every year 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 accumulate
rapidly inside the coil pipes. This growth is increased by
the extreme heat build up in the coil. The best preventa-
tive for liming conditions is to use high quality cleaning
detergents. In areas where alkaline water is an extreme
problem, periodic use of Landa Coil Descaler (Landa
Part #8.914-296.0) will remove lime and other deposits
before coil becomes plugged. (
Periodic descaling of the heating coil is recom-
mended so please consult your local Landa Dealer
for instructions.
Landa HOT Series Operator’s Manual 8.917-208.0 - B
