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Maintenance
WARNING
Electric shock hazard. Can cause inju-
ry or death. Before attempting to per-
form any service or maintenance, turn
the electrical power to unit OFF at dis-
connect switch(es). Unit may have
multiple power supplies.
Maintenance and service must be performed by a qualified
installer or service agency. At the beginning of each cooling
season, the system should be checked as follows:
Outdoor Unit
1 − Clean and inspect outdoor coil (may be flushed with a
water hose). Make sure power is off before cleaning.
2 − Outdoor unit fan motor is pre-lubricated and sealed. No
further lubrication is needed.
3 − Visually inspect all connecting lines, joints and coils for
evidence of oil leaks.
4 − Check all wiring for loose connections.
5 − Check for correct voltage at unit (unit operating).
6 − Check amp draw on outdoor fan motor.
Unit nameplate__________Actual__________.
7 - Inspect drain holes in coil compartment base and clean
if necessary.
NOTE − If owner complains of insufficient cooling, the unit
should be gauged and refrigerant charge checked. Refer
to section on refrigerant charging in this instruction.
Indoor Coil
1 − Clean coil if necessary.
Start−Up and Performance Check List
Job Name
Job Location
Installer
Unit Model No.
Nameplate Voltage
Rated Load Ampacity
Maximum Fuse or Circuit Breaker
Electrical Connections Tight?
Indoor Blower RPM
Discharge Pressure
Refrigerant Lines:
Leak Checked?
Service Valves Fully Opened?
Voltage With Compressor Operating
Start−Up and Performance Check List
Job No.
City
City
Serial No.
Compressor
Indoor Filter Clean?
S.P. Drop Over Indoor (Dry)
Vapor Pressure
Properly Insulated?
Service Valve Caps Tight?
Page 18
2 − Check connecting lines, joints and coil for evidence of
oil leaks.
3 − Check condensate line and clean if necessary.
Indoor Unit
1 − Clean or change filters.
2 − Adjust blower speed for cooling. Measure the pressure
drop over the coil to determine the correct blower CFM.
Refer to the unit information service manual for pressure
drop tables and procedure.
3 − Belt Drive Blowers − Check belt for wear and proper
tension.
4 − Check all wiring for loose connections.
5 − Check for correct voltage at unit. (blower operating)
6 − Check amp draw on blower motor.
Motor nameplate__________Actual__________.
Optional Accessories
Refer to the Engineering Handbook for optional accesso-
ries that may apply to this unit. The following may or may
not apply:
Loss of Charge Kit
D
High Pressure Switch Kit
D
Compressor Monitor
D
Compressor Crankcase Heater
D
D
Hail Guards
Mounting Bases
D
Stand−off Kit
D
Sound Cover
D
Low Ambient Kit
D
Monitor Kit
D
Mild Weather Kit
D
Service Technician
Outdoor Fan
Supply Voltage (Unit Off)
Outdoor Coil Entering Air Temp.
Refrigerant Charge Checked?
Outdoor Fan Checked?
Thermostat
Calibrated?
Properly Set?
Date
State
State
Level?
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