35
ATTENTION
When the unit has been turned off by means of the mains switch or by leaving the P-A-M
switch in O position for over 3 hours in winter or 6 hours in summer, pre-start should be
repeated.
ATTENTION
Medium temperature range :
+10 -5°C
Low temperature range :
-15 -25°C
Setting room temperature:
•
Connect the unit to the mains. OFF is displayed.
•
Press ON/OFF key, for 3 seconds, to switch the unit on.
•
Press SET key. The wellow led lights up and the previously set temperature is
displayed.
•
To change this value press following keys:
•
UP to increase temperature
•
DOWN to decrease temperature
Press SET key to confirm the set value or wait 15 seconds
Now the unit is operating and does not require any further programming. The refrigerating cycle is fully automatic
according to the factory-set parameters, which can be modified by authorised personnel only.
ATTENTION
24 hours after starting check evaporator state. If ice has formed, defrost frequency should
be increased. In low temperature units the evaporator condition should be checked every
week during the first month of operation.
10. Wiring
A wiring diagram, specific for the units of the DBO series, is enclosed with these use and
maintenance instructions.
11. Maintenance and repairs
Suitable maintenance is crucial for obtaining longer life, perfect working conditions and high
efficiency of the unit as well as for ensuring the safety features provided by the manufacturer.
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.
