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CHECKS BEFORE START-UP
Check the following before starting the
unit:
•
Anchorage of the unit to the ceiling
or the wall.
•
Connection of the hydraulic circuit
and the draining condensation
circuit.
•
Connection and continuity of the
earth cable.
•
Tightness of all electric clamps.
COMMISSIONING
The machine is running when the power
is turned on the various consents are
closed. Whenever the machine is started
up, the fan is the first component that
starts, after a set delay, followed by
the compressor (only in summer
dehumidification mode, while it is always
off in winter forced air heater mode).
Here below are the essential checks upon
the first start-up of the machine:
1.
check the watertightness of the
ORDINARY MAINTENANCE
RECOMMENDATIONS
B E F O R E
U N D E R T A K I N G
M A I N T E N A N C E
O P E R A T I O N ,
M A K E S U R E T H AT T H E M AC H I N E
IS NOT AND CANNOT BE CASUALLY
O R A C C I D E N TA L LY B E P O W E R E D
E L E C T R I C A L LY. I T I S T H E R E F O R E
N E C E S S A R Y T O R E M O V E T H E
ELECTRIC POWER SUPPLY EVERY TIME
MAINTENANCE IS PERFORMED.
•
The customer must carry out
maintenance on the dehumidifier.
30
hydraulic circuit and ensure there are
no leaks from the machine
2.
based on the pressure drops of the
ducts, select the best-suited fan
speed for the flow rate required
to ensure the correct functioning
of the machine (minimum flow
rate allowed: 10% lower than the
nominal one)
3.
ensure the flow rate of the cooling
water is not lower than the nominal
one according to the model
4.
ensure the inlet temperature of the
cooling water is not above 21°C.
If the water flow rate cannot be
measured, a calibration can be carried out
as follows:
•
fully open the chilled water
circulation;
•
start the dehumidifier and wait 15
minutes;
•
if you are within the operating
•
Only authorised, previously trained
and qualified staff can perform the
A N Y
maintenance operations.
•
If the unit must be disassembled,
protect the hands using work gloves.
MONTHLY CHECKS
CHECK THE FILTERING SECTION
Clean the drawn air filter with a variable
frequency according to the room where
the machine operates.
The filter can be removed from the front
(vertical version) or from any of the
sides (horizontal versions) by removing
DMH - DMH_C - DMV
limits, cooled air will come out of
the equipment. One can rise the
air temperature by slowly reducing
the cooled water flow rate up to the
desired conditions.
FUNCTIONING WITHOUT WATER
If there is no water flow rate, the
dehumidification mode is always
available, provided that the intake air
temperature does not exceed the limit
pre-set by the manufacturer. However,
the dehumidifying performance is the
machine will be lower, with a reduction of
more than 40%.
ATTENTION: DO NOT LET COOLED
WATER CIRCULATE IN THE MACHINE
WHEN IT IS IDLE FOR LONG PERIODS
OF TIME, AS CONDENSATION MIGHT
FORM ON THE EXTERNAL SURFACE OF
THE MACHINE.
the relative filter locks; in the case of a
recessed unit with a grid, remove the
front cover grid beforehand by releasing
it from the lower magnet and then raising
it slightly to release it from the locking
bushes.
Once cleaned, repeat the operations in
the reverse order. Use a suction device to
clean or wash with common detergent in
warm water, leaving to dry well. Always
remember to re-mount the filters before
re-starting the unit. Replace the filter with
a new one after max 3 cleaning cycles.
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