M02
J40
M6-
04
WDAT-3
2.160-3.660
- R O U T I N E M AI N T E N AN C E -
54
- R O U T I N E M A I N T E N A N C E -
PREVENTIVE MAINTENANCE
All equipment is subjected to wear out.
The maintenance makes:
1. keeps the unit efficiency
2. the components last longer,
3. keeps their efficiency and limits breakdowns.
Therefore, it is fundamental to perform periodical checks: a few controls can be performed by the user (AUTONOMOUS
MAINTENANCE) and they are mainly cleaning activities; otherwise, controls have to be performed by specialized
technicians (INSPECTIONS).
The machine should have a log book used to keep track of the performed controls. This will make fixing up breakdowns
easier. Take note of the date, type of control (autonomous maintenance, inspection or fixing up), description of the
control, actions taken and so on.
BEFORE PERFORMING ANY MAINTENANCE OR CLEANING OPERATIONS, CUT THE POWER TO THE UNIT AND
MAKE SURE THAT NO ONE ELSE CAN SUPPLY POWER.
SERVICES
Parts subject to intervention:
•
EXTERNAL AIR COIL
•
STRUCTURE
•
EXTERNAL
FANS
EXTERNAL AIR COIL
ATTENTION: contact with the exchanger fins can cause cuts. Wear protective gloves to perform the above described
operations.
It is extremely important that the battery gives the maximum thermal exchange; therefore, its surface must be cleaned
from dust and deposits. Remove all impurities from the surface.
Using an air pressure gun, clean the aluminum surface of the battery. Be careful to direct the air in the opposite direction
of the fan air movement. Hold the gun parallel to the fins to avoid damages. As an alternative, an aspirator can be used
to suck impurities from the air input side.
Verify that the aluminum fins are not bent or damaged. In the event of damages, contact the authorized assistance
center and get the battery “ironed out” in order to restore the initial condition for an optimal air flow.
STRUTTURA
Check the condition of the parts making up the structure.
Paint so as to eliminate or reduce oxidation at the points in the unit where this problem may occur. Check that the
panelling is fastened correctly. Poor fastening may give rise to malfunctions and abnormal noise and vibrations. Check
the condition of any gaskets..
EXTERNAL FANS
Make sure that the fans and the relative protection grids are well fixed.
Check, if possible, the unbalances of the electro-fan evident by noise and anomalous vibrations.
MAINTENANCE INSPECTIONS
Foresee inspection assistance carried out by authorized centers or by qualified personnel.
The inspections should be carried out at least:
•
- Every year for only the cooling units
•
- Every six months for the cooling and warming units
The frequency, however, depends on the use: in the event of frequent use (continuous or very intermittent use, near the
operating limits, etc) or critical use (service necessary) it is recommended to plan inspections at close intervals.
The inspections to be performed are as follows:
•
verify the power supply tension (when emptied or filled)
•
inspect the electrical board (status of solenoid starter contacts, terminal closings, the status of wiring and
relevant insulations)
•
inspect the absorption of the single electrical loads
•
verify the cleaning and the efficiency of the exchangers
•
inspect the cleaning of the filters (air/water)
•
verify the leakage from the refrigerating circuit
•
check the operating parameters of the refrigerating circuit (see REFRIGERANT TABLES and START-UP
section)
Summary of Contents for WDAT-3 2.160
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