Maintenance - Hitecsa ACHIA 601 Installation, Operation And Maintenance Manual

ACHIA / ACHIBA
AIR-TO-AIR UNITS – COMPACT HORITZONTAL INVERTER

MAINTENANCE

Before performing any service or maintenance operation, turn off the main power
switch of the system to avoid any personal injuries. Block the power switch so that
nobody other than a qualified technician can switch on electrical power.
It is advisable to do maintenance works every 1.000 operating hours as well as at the beginning of each cooling season.
• Coils: At least once a year, clean condenser coils with water and detergent, then dry with air at a pressure of 600 kPa.
Never clean with wire brush.
• Fans and motors: Adjust transmission belt at least twice during the first month of operation and then check every
1.000 hours. Fan and motors do not need additional lubrication.
• Drainage system: Verify condition and good operation of the drainage tray and siphon.
• Refrigeration circuit: Check for oil refrigerant leaks, noises or system's vibrations. Take measurements of
temperatures and pressures of components and record them on the maintenance form.
• Electrical circuit: Make sure that all electrical connections -wires, contactors, and terminals- are properly tight. Record
the measurements (volts and amperes) of each compressor and fan motor. Verify the starting current. Check the good
operation of all relays, presostats and phase sequence relay of Scroll compressor.
• Air filters: Clean filters after the first 4 operating hours and then every 3 months (or even before). Wash filters in water
with detergent, rinse thoroughly and let dry.
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