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6.2 - Maintenance
ALWAYS DISCONNECT THE VOLTAGE SUPPLY BEFORE
CARRYING OUT MAINTENANCE WORK.
The instructions indicated below only cover maintenance of the
condenser itself. To guarantee optimum system operation the
maintenance program in the air conditioner manual must also be
carried out.
MAINTENANCE PROGRAM - FANS
- Monthly check that the fan/s rotate freely without any abnormal
noise.
Also check the current absorption. (max current absorbition of
condensing unit has not to exceed 8 A).
- Every six months. Check the condensate drainage holes for
clogging, opening where necessary.
MAINTENANCE PROGRAM - COOLING COIL
Verify the state of the coil; if necessary clean it as follows:
•
In spring: clean using a vacuum cleaner.
•
In summer: this being the period of maximum use, keep
the coil as clean as possible, with a vacuum cleaner and, if
necessary, with water.
•
In winter: clean with water (with the air conditioner off).
•
If necessary (coil blocked - HP intervention) remove the fan
and clean the coil from the top using a high pressure water
jet (this operation must be performed by a technician to avoid
damage).
7 - Calibrations (Tab. 3)
The new ESD Variex (stepless fan speed controller by triac cut
phase method) is a stand alone controller, which comes factory
installed, wired and calibrated correctly with the values indicated
in Tab.3.
DSw
1
OFF: SP=MAX (100%)
2
OFF: Direct regulation
3
Reverse S2 contact operations
4 and 5
Alarm relay operations
6
Programmable for special functions
Direct/Reverse function on from remote control S3
7
OFF: open=Direct
Operations with filter for Digital Scroll ON
8
OFF: Proportional
Dsw>1 = ON (SP=MIN)
DSw>8=ON (Digital Scroll ON)
Warning!
Press button SB1 after changing DSw settings to
apply changes
Liebert
HCR - UM - 265224_EN - 13.10.2022
®
Description
ON: SP=MIN (0%)
ON: Reverse regulation
ON: closed= Reverse
ON: Filter ON
Alarm Relay Functional Programming
DSw4
DSw5
Relay idle when the regulator is in alarm
OFF
OFF
conditions
Relay idle when the regulator is:
ON
OFF
-
In alarm conditions
-
stopped
ON
ON
Relay always excited
Relay idle when the regulator is:
-
in alarm conditions
OFF
ON
-
in standby
-
stopped
Command Output
Display
With the regulator on, the following information appears on the
display:
SECTOR
1
Current configuration/Alarms
2
Regulator status
3
Inputs used
4
Value read at input/Bench used
Description
DESCRIPTION
7
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