Trailer Winterization; Inner And Outer Water Tanks; Coil, Heat Exchanger, Inlet Feed Pump, And High Pressure Hose; Vacuum Tank Assembly - Kärcher LANDA ECOS 7000 Series Service Manual

Trailer Winterization

To protect your machine from severe damage
caused by water freezing inside the components, it
is important to winterize it whenever it is subjected
to freezing temperatures.
The best way to protect the system is to keep it out
of the cold. Barring that, the next best way is to
flush the system with antifreeze. To do so, follow
these steps to properly operate the anti-freeze
protection system. This system is designed to
protect your equipment during cold weather condi-
tions of 32°F or below. Your ECOS trailer comes
with a factory installed winterization system.
Be sure to wear safety glasses and gloves when
winterizing system.

Inner And Outer Water Tanks

• After operation, turn engine off, drain all yellow
tanks by removing debris filter cap located
behind control panel and turn both tank valves
to the open position. If there is still water in the
tank, lower the front end of the trailer with the
jack to completely drain the tanks. Use a wet-
dry vacuum to suck the remaining water from
the drain ports at the bottom of the tanks.
• Once tanks are drained, replace debris filter
cap and turn both tank valves to the off position.
Coil, Heat Exchanger, Inlet Feed Pump,
and High Pressure Hose
• Relieve any pressure in wand and hose. Close
both tank valves located in the control cabinet.
Keep gun and wand attached to high pressure
hose and remove high pressure nozzle.
• Pour a minimum of a 5 gallons of environmen-
tally safe antifreeze mixture into two 5 gallon
buckets. (Determine what is the best mix ratio
for your environment).
• Remove the plug on the antifreeze inlet line
located in the control panel cabinet. Place open
line into antifreeze mixture. Have a second 5
gallon bucket ready to collect antifreeze
recycling through system.
• While holding open the gun trigger, start the
engine to draw the antifreeze solution into the
system. Keep the gun open. Once antifreeze
can be seen coming out of the wand, release
the gun trigger and allow the system to run in
bypass for 15 seconds. While in bypass, switch
the bypass valve on the control panel to the
other tank and continue to run in bypass for
Landa ECOS Trailer 7000 Service Manual 9.801-315.0 - AC
another 15 seconds. Turn the key to the OFF
position.
• Remove the inlet feed line from the antifreeze
mixture and replace the plug.
• Keep the gun and wand attached to the hose to
prevent 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 assembly 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
operation 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.
Maintenance
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