3.9 FREQUENCY SCHEDULE FOR PREVENTIVE MAINTENANCE
5 - Measure the magnet resistence of the clutch.
6 - Measure the voltage and current of the alternator.
3 - Tighten the alternator power cables, main fuse, relay plate, and starter.
2 - Measure the suction and discharge pressure and check the temperature and condition of the suction line.
4 - Measure the current consumption of the condenser fans and the evaporator blower. (check the air flow)
1 - Perform the monfly preventive manintenance routines
QUATERLY
2 - Clean the evaporator coil. (Use only mild soap and water, not abrasive to cooper and aluminum.)
3 - Visually check the air conditioner components that show sings of: leaking refrigerant and oil
Observe if there are loose parts, damaged, broken or showing sings of wear, rust, deterioration and friction with the body.
1 - Perform the quaterly preventive maintenance routines
3 - Clean the evaporator drains.
4 - Chek the retention of oil felt of compressor seal sealing.
EVERY SIX
MONTHS
WEEKLY
1 - Clean or change the air return filter.
2 - Inspect the conditions, tencioning and alingment of the compressor and alternator belts.
MONTHLY
2 - Clear the condensr coil. (Use only mild soap and water, not abrasive to cooper and aluminum.)
3 - Check the evaporator hoods’ closure to prevent the entry of false air into the equipment.
1 - Perform the weekly preventive maintenance routines
4 - Check the refrigerant gas load: After 15 minutes of operation the refrigerant gas must flow throgh the sight glass without bubbles.
6 - Test whether the equipament functions operation: cooling mode/ ventilation mode (high an low speed)/ heating/ air refreshment.
5 - Check the compressor level oil: After 15 minutes of operation it must be between 3/4 and 1/4 of the sight glass oil.
ANNUAL
4 - Tighten all screws from the compressor support and the unit, observing the applied torques.
3 - Check the open and closure pressure of the high and low pressure switches.
2 - Test compressor efficiency at 1500RPM.
3 - Register the compressor oil pump pressure at 1000RPM.
5 - Clean the air conditioner equipment to remove dirt deposited on the components: evaporator; condenser; compressor/clutch, altenator; controller
and the relay plate.
1 - Perform the every six monfhs preventive maintenance routines
Preventive maintenance
31
All preventive maintenance described in this manual is considered for operating under normal conditions.
Should the conditions be other than expected and environmental contamination a possibility, the frequency of actions must be more intense.
