Routine Maintenance; Periodical Maintenance; Service Operations To Be Carried Out By Qualified Technicians Or By The Manufacturer; Troubleshooting - Daikin LBBWH Installations- Und Bedienungsanleitung

12

ROUTINE MAINTENANCE

Good operation of the unit requires the condenser to be cleaned periodically (frequency of cleaning depends on
the environment where the unit is installed).
Turn off the unit and clean it by blowing air from the inside outwards. Should no air jet be available, use a
long-haired brush and work on the outside of the condenser.
In case of water-cooled condensers have the unit cleaned by a plumber with special descaling agents.
WARNING
Use safety gloves to protect your hands from possible cuts.
WARNING
Disconnect the unit before working on it.
12.2

Periodical maintenance

Periodically check wear condition of electrical contacts and remote switches; if necessary replace them.

12.2 Service operations to be carried out by qualified technicians or by the manufacturer

Following operations shall be carried out by qualified technicians or by the manufacturer exclusively. Under no
circumstances the user is allowed to:
 replace electrical components
 work on the electric equipment
 repair mechanical parts
 work on the refrigerating system

work on the control panel, ON/OFF and emergency switches

work on protection and safety devices.

12.3 Troubleshooting

During operation following troubles may occur:
1. Compressor stops. The unit is equipped with an overtemperature device which stops the
compressor every time the max. allowable temperature of motor windings is exceeded. Possible
causes are:
- insufficient ventilation of the room where the unit is installed;
- anomaly in mains voltage;
- faulty operation of condenser fan.
Device reset is automatic.
2. Display does not light up. Check:
- if there is power to the unit;
- if mains cable is connected properly;
- fuses inside the electric panel
3. Unit does not start operating when pressing ON/OFF key (the display is turned on): check
microdoor connection keeping in mind that the switch contact must be closed when the door is
closed.

12.4 Unsatisfactory efficiency of the unit:

If no defects are found in the unit check that: cold room doors are perfectly tight; there is no cold dispersion;
the cold room is used wisely; no unfrozen liquids or foodstuffs are placed in the low temperature room; the
evaporator is ice-free.
We recommend installation of the machines far from the doors especially when the cold room is expected to be
opened many times a day.
WARNING:
Removal of protections during machine operation is absolutely forbidden. They have
been developed to safeguard the operator's safety.