19
Maintenance
Preventative Maintenance
1. Follow Winterizing Procedures to prevent freeze
damage to the pump and coils.
2. Always neutralize and flush detergent from system
after use.
3. If water is known to be high in mineral content, use
a water softener in your water system or de-scale
as needed.
4. Do not allow acidic, caustic or abrasive fluids to be
pumped through system.
5. Always use high grade quality Landa cleaning
products.
6. Always cool the heating module.
7. Periodically descale coils per instructions.
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 & Service
Winterizing Procedure
Damage due to freezing is not covered by warranty.
Follow these cold weather procedures whenever the
washer must be stored or operated outdoors under
freezing conditions.
If the water heater will be exposed to freezing weather,
an anti-freeze solution should be circulated through the
coils by whatever means are available for the particular
system the water heater is used on. If compressed air
is available, an air fitting can be screwed into the
discharge coupling fitting and by injecting compressed
air, all water will be blown out of the system. The use of
a draft diverter will prevent the wind chill factor from
freezing the coil.
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.
Heating Coils
To Check Water Heater Coil for Leaks
With the main burners “OFF” start the pumping
machine and allow it to run for a few minutes. Check
into the burner compartment with a drop light or flash
-
light. If no leaks are visible, then water dripping from
coil is from condensation in the flue gases when the
burner is on.
Condensation from Heating Coil
When cold water is being pumped into the water heater
coils, and the burner is on, condensation will form on
the coil and drip down into the burner compartment,
giving the appearance of a leaking coil, particularly on
cold humid days.
Descaling 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 preven
-
tion 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 (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 NG 3000 Operator’s Manual 8.913-942.0 - E
Summary of Contents for NG-3000
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