16
Maintenance
Cleaning of Coils
In alkaline water areas lime deposits can accumulate
rapidly inside the coil pipes. This growth is increased by
the extreme heat buildup in the coil. In areas where
alkaline water is an extreme problem, periodic use of
Landa Coil Descaler (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.
Spray Nozzles
Each machine is equipped with four spray nozzles.
Different spray nozzles are calibrated for each machine
depending on the flow and pressure of that particular
model. Spray nozzles vary in bore size and angle of
spray. Popular spray angles are 15°, 25° and 40°.
When ordering, please specify size and angle of
nozzle. Nozzle size for each machine is located on the
serial plate.
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, and will
void the manufacturer's warranty. (Consult your local
LANDA Dealer for the correct procedures.)
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 the winter months, when temperatures drop
below 32° F, protecting your machine against freezing
is necessary. Siphoning a small amount of antifreeze
into the system is recommended. Pouring a 50/50 mix
of antifreeze and water into the float tank and then
siphon 100% antifreeze through the detergent line with
the pump on. If compressed air is available, an air
fitting can be screwed into the float tank strainer fitting
and, by injecting compressed air, all water will be blown
out of the system.
Low Pressure Diagnosis
Refer to the low pressure section of the troubleshooting
guide. If, by referring to the guide, the trouble is found
to be either the unloader or pump, your next step is to
determine which is the problem. This can be done by
eliminating the unloader from the system and attaching
the discharge hose directly to the pump. If high
pressure is present, then the unloader needs repairing
or replacing.
CAUTION: When using this procedure to test
components, keep spray gun open at all times.
ATTENTION: Lorsque cette procédure est utilisée
pour tester les composants, garder le pistolet
pulvérisateur ouvert en tout temps.
Landa PHW Operator’s Manual 8.917-417.0 - D
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