Landa ECOS 7000 Operator's Manual page 24

• Keep the gun and wand attached to the hose to pre-
vent antifreeze mixture from draining from the unit.
Vacuum Tank Assembly
• Start by turning on the filter pump until the float at
the bottom of the vacuum tank turns off the pump.
Manually pull the normally open float (lower float
located inside vacuum tank) to the up position so
the pump starts and removes any remaining water
from the system.
• Pour 1 gallon of environmentally safe antifreeze
mix into vacuum tank and disconnect ¾" JIC below
the pressure gauge on the inlet side of the filter
assembly. Manually pull the lower float to the up
position so the pump starts and fills the pump as-
sembly and hoses with antifreeze mix. Once you
see antifreeze start to flow from the ¾" hose, drop
the float to the off position and reconnect ¾" JIC.
• Remove the two filter canisters and drain any water.
(Take care not to lose O-rings) Remove the filters
and air dry for storage. Disconnect the ¾" JIC on
the right hand side of the filter assembly and use
air to purge the water out of the return line to the
inner water tank. Reconnect when you are finished.
Use the following steps to return to normal opera-
tion after winterizing your equipment.
• Open the tanks valves and remove high pressure
nozzle from wand.
• Place the wand end into a 5 gallon bucket and pull
gun trigger, be careful of backsplash.
• With the gun in hand and the trigger pulled, turn
the start key to the auxiliary position.
• Run the pump until there is clear water running out
of wand end.
• Turn feed pump off and release wand. Replace
high pressure nozzle in wand.
• Comply with local state and federal laws when using
and disposing of antifreeze.
The machine is now ready for normal use.
24
MAINTENANCE & SERVICE
9.801-316.0 • Landa ECOS 7000 Operator Manual • Rev. 12/12
High Limit Hot Water Thermostat
For safety, each machine is equipped with a tempera-
ture sensitive high limit control switch. In the event that
the water should exceed its operating temperature, the
high limit control will turn the burner off until the water
cools then automatically reset itself. The thermostat
sensor is located on the discharge side of the heat-
ing coil. The thermostat control dial is located on the
control panel.
Pumps
Use only SAE 10W-40 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, or 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 heating coil. This growth is increased
by the extreme heat build up in the coil. The best
prevention for liming conditions is to use high quality
cleaning chemicals. 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.
Deliming Coils
Periodic flushing of coils is recommended.
1. Fill a container with 5 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. Remove front middle and right side (passenger
side) panels. Detach 3/4" hose from top of heat
exchanger, the other end of the hose is attached
to the high pressure pump inlet. Place the loose
end of the hose in the deliming solution.
4. Turn pump switch on, allowing solution to be
pumped through coils back into the container. The
solution should be allowed to circulate 2-4 hours or
until the color changes.
5. After circulating solution flush entire system with
fresh water. Reinstall wand assembly to spray gun,
a 3/4" hose and front panels.