46
DESCRIPTION
WEEKLY
MONTHLY
EVERY SIX MONTHS
Visual inspection of the unit
•
Inspection of hydraulic circuit
•
Inspection of electrical system
•
Inspection of condensing system
•
Inspection of the water heat exchanger
•
Inspection of the water filter
•
Inspection of the water pumps (if present)
•
Reading and adjustment of the operating parameters
•
General Rules for Maintanance
The maintenance is extremely important for the functioning of the system and the regular working of the unit over time.
In accordance with the European Regulation EC 303/2008 , it should be noted that companies and engineers in maintenance , repair,
leak testing and recovery / recycle refrigerant gases should be CERTIFIED in accordance with local regulations.
Maintenance must be performed in compliance with the safety rules and tips given in the manual supplied with the unit.
Routine maintenance helps maintain unit efficiency, reduce the rate of deterioration which each device is subject in time and gather
information and data to understand the efficiency of the unit and prevent failures.
For extraordinary maintenance or in case you need service , contact only to a specialized service center approved by the manufac-
turer and use original spare parts.
In accordance with the European Regulation EC 1516/2007 it is necessary to prepare a “equipment record”.
Provide anyway a databook (not supplied) that allows you to keep track of interventions made on the unit; in this way it will be easier
to properly program the various interventions and will facilitate a possible troubleshooting.
Bring on the databook : date, type of intervention made, description of the intervention , measurements , reported anomalies , alarms
recorded in the alarm history , etc. ...
Routine maintenance
The inspections described below, to which the unit must be subjected, do not require specific technical know-how.
They merely include a few simple inspections involving certain parts of the unit.
The table below gives a recommended list of inspections which should be carried out at the indicated intervals.
Provide controls and interventions more frequently in case of heavy (continuous or intermittent high, close to operating limits, etc ...)
or critical (essential service such as data centres, hospital etc ...) use.
• Visual inspection of the structure of the unit
When checking the condition of the parts that form the structure of the unit, pay particular attention to the parts liable to rust.
If traces of rust are noted, they must be treated with rust-inhibitor paint in order to eliminate or reduce the problem.
Check to make sure that the external panels of the unit are well fixed.
Bad fixing gives rise to noise and abnormal vibrations.
• Inspection of hydraulic circuit
Check visually to make sure that there are no leaks in the hydraulic circuit. Check that water filters are clean.
• Inspection of electrical system
Make sure that power cables that supply the unit are not torn, cracked or damaged in a way that could impair its insulation.
• Inspection of the ventilated condensing/evaporating section
WARNING
: The finned pack exchanger has fins made of aluminium or some other thin material, thus even accidental contact could
cause cuts.
Condensing/Evaporating coils
In view of the function of this component, it is very important for the surface of the exchanger to be as free as possible from clogging
caused by items that could reduce the fan’s air flow rate and, thus, the performances of the unit itself.
The following operations may be required:
- Remove all impurities (such as paper scraps, leaves, etc.) that could be clogging the surface of the bank either by hand or using a
brush (comply with the above mentioned safety prescriptions).
- If the dirt has deposited on the fins and is difficult to remove by hand, use a flow of compressed air or pressurized water on the
aluminium surface of the coils, remembering to direct the flow in a vertical and opposite to the standard flow direction to prevent the
fins from being damaged.
- “Comb” the coils with the relative tool, using the appropriate comb spacing for the fins if some parts of them are bent or squashed.
SAFETY AND MAINTENANCE
SAFETY AND MAINTENANCE
General Rules for Maintanance
Routine maintenance