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Maintenance
Unit with water heating
The appliance filter should be cleaned
regularly to ensure the air curtain effect and
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 supply.
2. Loosen the screws and raise the front panel.
The front is locked 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 conditions.
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 electrical heating is
equipped with an overheat protection. If it is
deployed due to overheating, reset as follows:
1. Disconnect the electricity supply with the
fully isolated switch.
2. Allow the electrical coil to cool.
3. Determine the cause of overheating and
rectify the fault.
4. Reconnect the air curtain.
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.
26
PAEC4000
Temperature control
Temperature control of SIRe maintains the
exhaust temperature. If the temperature
should exceed the preset value anyway
the overheating alarm goes off. For more
information see the manual for SIRe.
Fan replacement
1. Determine which of the fans is not functioning.
2. Disconnect the cables from 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 heating elements (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.
Troubleshooting
If the fans are not working or do not blow properly,
check the following:
• That the intake grille/filter is not dirty.
• Functions and settings of the SIRe control
system, see manual for SIRe.
If there is no heat, check the following:
• Functions and settings of the SIRe control
system, see manual for SIRe.
For units with electrical heating, also check the fol-
lowing:
• Power supply to electric heater coil; check
fuses and circuit-breaker (if any).
• That the overheat protection has not been
deployed.
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