8 --- Calibrations
The air conditioner has already been factory ---tested and calibrated as described below.
COMPONENT
Low pressure switch
(LP)
High pressure switch
(HP)
Fan speed adjuster
(BV)
9 --- Maintenance / Spare parts
For safety reasons, if possible, cut the unit out, by operating the QS1 switch before carrying out any maintenance.
The Maintenance Programme described below should be carried out by a skilled technician, preferably working under a mainte-
nance contract.
Maintenance programme --- Monthly check
FANS
AIR FILTERS
ELECTRICAL CIRCUIT
REFRIGERATING CIRCUIT
9.1 --- Dismantling the unit
The machine has been designed and built to ensure a continu-
ing operation. The working life of some of the main compo-
nents, such as the fan and the compressor, depends on their
maintenance. If the unit has to be dismantled, this must be
done by skilled refrigerator technicians.
The refrigerating fluid and the lubricating oil, contained in the
circuit, must be collected according to the laws of your Country.
English
CALIBRATIONS
STOP
: 1 bar
START
: 2 bar
(fixed calibrations)
STOP
: 28 bar
START
: 20 bar
(fixed calibrations)
SET.
: 18.8 bar
BAND P
: 3.8 bar
(For adjusting see the instruc-
tions enclosed on the ma-
chine)
Check that the fan motor rotates freely without any abnormal noise, and ensure that the
bearings are not running hot.
Also check the current absorption.
Check the state of the filter; if necessary clean or replace it.
To replace it:
remove the lower panel of the unit
S
extract the filter from its seat vertically
S
fit the spare part
S
close the panel
S
In very dusty environments perform this check more frequently.
Check the power supply on all phases.
S
Ensure that all electrical connections are tight.
S
Check the evaporating pressures (to be done by an expert technician).
S
Check the compressor current absorption, its head temperature and the presence of
S
any unusual noise.
Ensure that there is no ice formation on the evaporator.
S
8
automatic
reset
manual reset
pressing the
push button
9.2 --- Spare parts
It is recommended the use of original spare parts.
When placing an order refer to "Component List" enclosed with
the machine and quote the unit model no. and serial no.
NOTES