Maintenance; Optional Accessories; Start−Up And Performance Check List - Lennox 12HPB Series Installation Instructions Manual

Maintenance

WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect 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
or heating season, the system should be checked as fol-
lows:
Outdoor Unit
1 − Clean and inspect the outdoor coil. The coil may be
flushed with a water hose. Ensure the power is turned
off before you clean the coil.
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 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
Cooling
Liquid Line Pressure
Heating
Liquid Line Pressure
Refrigerant Lines: Leak Checked?
Service Valves Fully Opened?
Sequence of Operation
Heating Correct
Start−up and Performance Check List
Job No.
Serial No.
Compressor
Indoor Filter Clean?
S.P. Drop Over Indoor (Dry)
Vapor Pressure
Vapor Pressure
Properly Insulated?
Service Valve Caps Tight?
Cooling Correct
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 - Lennox blower motors are prelubricated and permanent-
ly sealed. No more lubrication is needed.
3 − 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.
4 − Belt Drive Blowers − Check belt for wear and proper
tension.
5 − Check all wiring for loose connections.
6 − Check for correct voltage at unit. (blower operating)
7 − 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
Hail Guards
D
Mounting Bases
D
Stand−off Kit
D
Sound Cover
D
Low Ambient Kit
D
Monitor Kit
D
Mild Weather Kit
D
City
City
Outdoor Fan
Outdoor Coil Entering Air Temp.
Refrigerant Charge Checked?
Refrigerant Charge Checked?
Voltage With Compressor Operating
Thermostat
Calibrated?
Date
State
State
Service Technician
Supply Voltage (Unit Off)
Outdoor Fan Checked?
Properly Set? Level?