29
•
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 backslash.
•
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.
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 heating
coil. The thermostat control dial is located on the
control panel.
Pumps
Use only SAE 10W-40 weight non-foaming oil. Change
oil after first 50 hours of use. Thereafter, change oil
every year 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 Coil Descaler
(part #8.914-296.0) will remove lime and other deposits
before coil becomes plugged.
Descaling Coils
Periodic flushing of coils is recommended.
1. Fill a container with 5 gallons of water, then add 1
lb. of descaling 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 descaling 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.
Landa ECOS 7000 Operator’s Manual 9.801-316.0 - G
