CARE AND MAINTENANCE
To assure high performance and minimize possible equipment malfunction, it is essential that maintenance be performed periodically on this equipment. The frequency with which maintenance is performed is dependent on such factors as hours of operation, geographic location, and local environmental conditions.
!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Disconnect all electrical power to unit before performing any maintenance or service on outdoor unit. Remember to disconnect power supply to air handler as this unit supplies low-voltage power to the outdoor unit.
The minimum maintenance that should be performed on this equipment is as follows:
1.Check outdoor coil for cleanliness each heating and cooling season and clean as necessary.
2.Check fan motor and blade for cleanliness each month during cooling season and clean as necessary.
3.Check electrical connections for tightness and controls for proper operation each cooling season and service as necessary.
!CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation.
Because of possible damage to the equipment or personal injury, maintenance should be performed by qualified personnel only.
Desert and Seacoast Locations
Special consideration must be given to installation and maintenance of condensing units installed in coastal or desert locations. This is because salt and alkali content of sand adheres to aluminum fins of coil and can cause premature coil failure due to corrosion.
Preventive measures can be taken during installations, such as:
1.Locate unit on side of structure opposite prevailing winds.
2.Elevate unit to height where drifting sand cannot pile up against coil. Mounting feet, 4 in. high, are available as accessories and can be used to elevate unit.
3.Addition of coastal filter (See Product Data Digest for accessory listing).
Maintenance in desert and seacoast locations:
1.Frequent inspection of coil and basepan especially after storms and/or high winds.
2.Clean coil by flushing out sand from between coil fins and out of basepan as frequently as inspection determines necessary.
3.In off season, cover with covering that allows air to circulate through but prevents sand from sifting in (such as canvas material). Do not use plastic as plastic will hold moisture possibly causing corrosion.
Cleaning Coil
1.Remove top cover. (See Remove Top Cover in Cabinet section of this manual.)
2.Remove coil grilles or louvers (as applicable) to gain full access to coils for cleaning.
!CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation.
Coil fin damage can result in higher operating costs or compressor damage. Do not use flame, high-pressure water, steam, volatile or corrosive cleaners on fins or tubing.
3.Clean coil using vacuum cleaner and its crevice tool. Move crevice tool vertically, close to area being cleaned, making sure tool touches only dirt on fins and not fins. to prevent fin damage, do not scrub fins with tool or move tool horizontally against fins.
4.If oil deposits are present, spray coil with ordinary household detergent. Wait 10 minutes, and proceed to next step.
5.Using garden hose, spray coil vertically downward with constant stream of water at moderate pressure. Keep nozzle at a 15- to 20_ angle, about 3 in. from coil face and 18 in. from tube. Spray so debris is washed out of coil and basepan.
6.Reinstall top cover and position blade.
7.Reconnect electrical power and check for proper operation.
Cleaning Outdoor Fan Motor and Blade
1.Remove fan motor and blade. Be careful not to bend or dent fan blade.
2.Clean motor and blade with soft brush or cloth. Be careful not to disturb balance weights on fan blade.
3.Check fan blade setscrew for tightness.
4.Reinstall fan motor and blade to top cover and check for alignment.
5.Reinstall top cover and position blade.
6.Reconnect electrical power and check for proper operation.
Electrical Controls and Wiring
1.Disconnect power to both outdoor and indoor units.
2.Check all electrical connections for tightness. Tighten all screws on electrical connections. If any connections appear to be burned or smoky, disassemble the connection, clean all parts and stripped wires, and reassemble. Use a new connector if old one is burned or corroded, and crimp tightly.
3.Reconnect electrical power to indoor and outdoor units and observe unit through 1 complete operating cycle.
4.If there are any discrepancies in operating cycle, troubleshoot to find cause and correct.
Refrigerant Circuit
1.Check refrigerant charge using the superheat method, and if low on charge, check unit for leaks using an electronic leak detector.
2.If any leaks are found, remove and reclaim or isolate charge (pumpdown) if applicable. Make necessary repairs.
3.Evacuate, recharge, and observe unit through 1 complete operating cycle.
