5
AC35
Maintenance
Unit with water heating:
The appliance filter should be cleaned regularly to ensure
the air curtain effect and the heat emission from the
device. How often depends on local circumstances.
A clogged filter is not a risk, but the appliance function
can fail.
1. Disconnect the power.
2. Loosen the screws and raise the front panel.
The front is blocked in open position with the front
hatch hook, see fig 1A.
3. Remove the filter and vacuum clean or wash it.
If the filter is clogged or damaged, it may need to
be changed.
All units:
Since fan motors and other components are maintenance
free, no maintenance other than cleaning is necessary.
The level of cleaning can vary depending on local condi-
tions. Undertake cleaning at least twice a year. Inlet and
exhaust grilles, impeller and elements can be vacuum
cleaned or wiped using a damp cloth. Use a brush when
vacuuming to prevent damaging sensitive parts. Avoid
the use of strong alkaline or acidic cleaning agents.
Overheating
The air curtain unit with electric heater is equipped with
an overheat protector. The overheat protection is reset by
turning off the switch and the unit cools. If it is deploy-
ed due to overheating, reset as follows:
1. Disconnect the electricity with the fully
isolated switch.
2. Allow the electrical coil to cool.
3. Determine the cause of overheating and rectify
the fault.
4. Connect the air curtain again.
All motors are equipped with an integral thermal safety
cut-out. This will operate, stopping the air curtain
should the motor temperature rise too high. The cut-out
will automatically reset when the motor temperature has
returned to within the motor’s operating limits.
Temperature control
Temperature control of PLS maintains the exhaust tem-
perature to approx. +40 °C. If the temperature should
exceed anyway there is an overheating alarm. For more
information see the manual for PLS.
Fan replacement
1. Determine which of the fans is not functioning.
2. Disconnect the cables to the relevant fan.
3. Remove the screws securing the fan and lift
the fan out.
4. Install the new fan as above in reverse order.
Replacing a electric coil (E)
1. Mark and disconnect the cables to the electric
coil package.
2. Remove the mounting screws securing the electric
coil package in the unit and lift it out.
3. Replace faulty electric coil.
4. Install the electric coil package in reverse order
to the above.
Replacing the water coil (W)
1. Shut off the water supply to the unit.
2. Disconnect the connections to the water coil.
3. Remove the mounting screws securing the coil
in the unit and lift the coil out.
4. Install the new coil in reverse order to the above.
Draining the water coil (W)
The drain valves are on the underside of the coil on the
connector side. It can be accessed via the service hatch.
