Liebert 272014 Air Conditioner User Manual


 
page 9
English
9 - Maintenance
For safety reasons, clear the unit opening the switches
QS1 and QS2 before performing any maintenance
operations.
If installed:
AS THE HIROMATIC/MICROFACE FEATURES
AUTOMATIC RESTART (AFTER A SUPPLY
INTERRUPTION) IT IS ADVISED TO DISABLE
AUTORESTART AND OPEN THE SWITCH QS
WHEN PERFORMING ANY MAINTENANCE.
S Every day check the Hiromatic/Microface readings for
temperature and, if shown, ambient relative humidity.
S The Maintenance Programme described below
should be carried out by a skilled technician, preferĆ
ably working under a maintenance contract.
Maintenance program - Monthly check
FANS
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.
AIR FILTERS
Check the filter conditions; if necessary clean or replace them.
How to replace:
S remove the upper panel of the unit
S extract the filter from its seat horizontally
S introduce the spare part
S close the panel
In very dusty environments perform this check more frequently.
HIROMATIC/MICROFACE
Verify the operation of the HIROMATIC/MICROFACE's LEDs, display and
alarms.
ELECTRICAL
CIRCUIT
S Check the power supply on all phases.
S Ensure that all electrical connections are tight.
REFRIGERATION
CIRCUIT
S Check the evaporating pressures (to be done by a refrigeration technician).
S Check the compressor current absorption, its head temperature and the presĆ
ence of any unusual noise.
S Ensure that there is no ice formation on the evaporator.
9.1 - Dismantling the unit
The machine has been designed and built to ensure conĆ
tinuous operation.
The working life of some of the main components, such
as the fan and the compressor, depends on their mainteĆ
nance.
If the unit has to be dismantled, this must be done by
skilled refrigerator technicians.
The refrigerating fluid and the lubricating oil in the cirĆ
cuit must be disposed of in conformity with the laws in
force in your country.