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CONTROLLER EMERGENCY REPAIR
In case of fault or malfunctioning of the electronic control panel, if a short-term replacing is not possible, an EMERGENCY
SYSTEM” can be used to keep the unit running until a new control panel may be installed.
The “EMERGENCY SYSYEM” consists of a terminal board sited on the control panel, fitted with 4 terminals, as shown
in picture 9.
Proceed as follows to use the system:
1. Switch the electronic control panel off by pressing the
ON/OFF (10).
N.B.: The electronic control panel should remain in this
condition during the whole emergency period.
2. Switch the unit OFF.
3. Connect a thermostat (6 inductive Amps.) to the
terminals E1 and E2 (Pict. 10).
4. Bridge terminals E2 and E3 as well as terminals E3
and E4 (Pict. 10).
5. Install the thermostat bulb inside room.
6. Adjust the ‘stat at the required temperature and switch
the unit on.
7. When the set temperature is reached, compressor,
evaporator and condenser fans will stop.
8. During emergency period, defrost-cycle is not operating;
it is therefore advisable to reduce door openings to a
minimum.
9. When installing a new control panel, remove all
connections stated in items 3 and 4, before
switching the unit on.
ROUTINE MAINTENANCE
In order to maintain the unit in its optimum operating condition, it is necessary to clean periodically. (The frequency
depends on the site conditions where the unit is installed).
This operation should be done with the unit switched OFF and preferably with compressed air blowing from the inside
through the condenser. If this is not available, then use a long-haired brush on the outside of the unit. In case of water-
cooled units, it is recommended that the cleaning is carried out by a plumber using suitable descaling agents.
All installation, maintenance or repair interventions must be carried out exclusively by authorised personnel.
All repair’s and maintenance to be carried out with the unit switched “OFF”.
Switch the unit “OFF” through the fused isolator.
Refrigerants must not be disposed of in the environment. No retrofit is allowed unless expressly authorised by the
manufacturer.
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