Maintenance And Service - Landa vhp2-1500 Operator's Manual

prevenTaTIve
maInTenanCe
1. Check to see that the water pump is properly
lubricated.
2. Follow winterizing instructions to prevent freeze
damage to the 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 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 Landa cleaning
products.
7. Never run pump dry for extended periods
of time.
8. Periodically delime coils as 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 equip-
ment 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 relieve pressure in the line when
the shut-off spray gun is closed. Unloader valves are
preset and tested at the factory before shipping. Oc-
casional adjustment of the unloader may be neces-
sary to maintain correct pressure. (Contact your local
dealer for correct procedure in adjusting unloader
valve.) 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 when-
ever 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 nec-
essary. Store the machine in a heated room. If this is not
possible then mix a 50/50 solution of anti-freeze/water
into a 5 gallon bucket and with a short section of garden
16
maInTenanCe & servICe
LANDA VHP • 8.913-949.0 • Rev. 5/13
hose elevate the bucket and turn the pump on to siphon
the anti-freeze through the machine. If compressed air
is available, an air fitting can be screwed into the inlet
connector and, 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 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 the dipstick found on the
top of the pump or by 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 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 Deliming Powder (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 is recommended.
1. Fill a container with 4 gallons of water, then add 1
lb. of deliming powder. Mix thoroughly.
2. Remove wand assembly from spray gun and put
spray gun into container. Secure the trigger on the
spray gun into the open position.
3. Attach a short section (3-5 ft.) of garden hose to
machine to siphon solution from an elevated con-
tainer. Turn pump switch on allowing solution to be
pumped through coils back into the container. Solu-
tion should be allowed to circulate 2-4 hours.
4. After circulating solution, flush entire system with
fresh water. Reinstall wand assembly to spray
gun.
removal of soot and heating Coil:
In the heating process, fuel residue in the form of soot
deposits may develop between the heating coil pipe
and block air flow which will affect burner combustion.
When soot has been detected on visual observation,
the soot on the coil must be washed off after following
the coil removal steps.