3.9 FREQUENCY SCHEDULE FOR PREVENTIVE MAINTENANCE
1 - Clean or change the air return filter.
WEEKLY
2 - Inspect the conditions, tencioning and alingment of the compressor and alternator belts.
1 - Perform the weekly preventive maintenance routines
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.
MONTHLY
4 - Check the refrigerant gas load: After 15 minutes of operation the refrigerant gas must flow throgh the sight glass without bubbles.
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.
6 - Test whether the equipament functions operation: cooling mode/ ventilation mode (high an low speed)/ heating/ air refreshment.
1 - Perform the monfly preventive manintenance routines
2 - Measure the suction and discharge pressure and check the temperature and condition of the suction line.
3 - Tighten the alternator power cables, main fuse, relay plate, and starter.
QUATERLY
4 - Measure the current consumption of the condenser fans and the evaporator blower. (check the air flow)
5 - Measure the magnet resistence of the clutch.
6 - Measure the voltage and current of the alternator.
1 - Perform the quaterly preventive maintenance routines
2 - Clean the evaporator coil. (Use only mild soap and water, not abrasive to cooper and aluminum.)
3 - Clean the evaporator drains.
EVERY SIX
4 - Chek the retention of oil felt of compressor seal sealing.
MONTHS
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 every six monfhs preventive maintenance routines
2 - Test compressor efficiency at 1500RPM.
3 - Register the compressor oil pump pressure at 1000RPM.
ANNUAL
3 - Check the open and closure pressure of the high and low pressure switches.
4 - Tighten all screws from the compressor support and the unit, observing the applied torques.
5 - Clean the air conditioner equipment to remove dirt deposited on the components: evaporator; condenser; compressor/clutch, altenator; controller
and the relay plate.
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.
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Preventive maintenance