25
SET POINT change: By pressing the key for 3s the set point value is displayed and the set point change
mode is entered: the SET led blinks. In order to change the value use the UP and DOWN keys.
Then, the new value can be stored either by pressing the “SET” key (the instrument restores temperature display)
or by waiting the programming exit timeout (15s).
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.
9.2 How to Lock / Unlock the keyboard
Lock
• Keep pressed for more than 3’’ the
and
keys.
• The (POF) message will be displayed and the keyboard will be locked. At this point it will be possible
only to see the set point or the Max o Min temperature stored.
• If a key is pressed more than 3’’ the (POF) message will be displayed.
Unlock
• Keep pressed together for more 3’’ the
and
keys, till the (Pon) message will be displayed.
10. Wiring
A wiring diagram, specific for the units of the CS 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.
12.1
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
To Next Page
Loading...