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IOM ACHA-ACHBA_201a1201_208000_180901_EN
ACHA / ACHBA
PACKAGED COMPACT
HORIZONTAL AIR - AIR
MAINTENANCE
It is advisable to do maintenance works every 1.000 hours as well as at the beginning of each cooling season.
In case of leakage, any manipulation and/or recovery of refrigerant must be carried out by qualified and accredited
personnel in the current legislation. Add the quantity of oil that has been lost.
CONSERVATION AND CLEANING
Electrical circuit
: Make sure that all electrical connections
–wires, contactors and terminals- are properly tight. Record
the readings for volts and amperes of each compressor and fan motor. Verify the starting current. Check the good operation
of all relays, pressure switches and phase sequence relay of Scroll compressor.
Refrigeration circuit
:
Check for oil or refrigerant leaks, noises or system’s vibration. Take measurements of temperatures
and pressures of components and record them on the maintenance form.
Coils
: At least once a year, clean condenser coils with water and detergent, then dry with air at low pressure. Never clean
with a wire brush, water and/or air at high pressure.
Drainage system
: Verify condition and good operation of the drainage tray and drain trap.
LUBRICANT
R-410A refrigerant compressors use synthetic polyolester oil. Each compressor manufacturer has a specific oil for your
product.
The compressor or system should not remain open to atmosphere for more than 15 minutes.
Synthetic ester-type lubricants (POE, Polyol Ester) having high solubility with R-410A are used. Since these types of oils
are very hygroscopic, it should be more careful handling them than with conventional ones. Moreover, when these synthetic
oils are mixed with minerals (MO) or alkylbenzenes (AB), they deteriorate causing capillary blockage or failure in the
compressor.
DO NOT MIX UNDER ANY CIRCUMSTANCES.
Before performing any service or maintenance of the unit, it is mandatory to disconnect and lock
the system main switch to prevent anyone other than the technician from connecting the unit and
causing personal injury.
WARNING!
