Installation and Operation Manual -
HRG18xxS1P
Page 20 of 23
508133M01
Issue 2106
2. Connect gauge to the service port.
3. When testing is completed, replace service port cap.
Tighten finger tight, then an additional 1/6 turn.
To Open Liquid or Suction Line Service Valve:
1. Remove stem cap with an adjustable wrench.
2. Use service wrench with a hex-head extension to back
the stem out counterclockwise as far as it will go. Use a
3/16” hex head extension for liquid line service valves
and a 5/16” extension for suction line service valves.
3.
Replace the stem cap. Tighten finger tight, then tighten
an additional 1/6 turn.
To Close Liquid or Suction Line Service Valve:
1. Remove the stem cap with an adjustable wrench.
2. Use a service wrench with a hex-head extension to
turn the stem clockwise to seat the valve. Tighten
firmly.
3.
Replace the stem cap. Tighten finger tight, then tighten
an additional 1/6 turn.
Suction Line (Ball Type) Service Valve
Suction line (ball type) service valves function the same
way as the other valves; the difference is in the construction
(see Figure 13).
The ball valve is equipped with a service port with a factory-
installed Schrader valve. A service port cap protects the
Schrader valve from contamination and serves as the
primary seal.
Figure 13.
Maintenance
Regular Maintenance Requirements
Your system should be regularly inspected by a qualified
service technician. These regular visits may include
(among other things) checks for:
• Motor operation
• Ductwork air leaks
• Coil & drain pan cleanliness (indoor & outdoor)
• Electrical component operation & wiring check
• Proper refrigerant level & refrigerant leaks
•
Proper airflow
• Drainage of condensate
•
Air filter(s) performance
• Blower wheel alignment, balance & cleaning
• Primary & secondary drain line cleanliness
• Proper defrost operation (heat pumps)
Air Filter
Inspect air filters at least monthly and replace or clean as
required. Disposable filters should be replaced. Washable
filters may be cleaned by soaking in mild detergent and
rinsing with cold water. Allow filter to dry before reinstalling.
Replace filters with the arrows pointing in the direction of
airflow. Dirty filters are the most common cause of poor
heating / cooling performance and compressor failures.
Indoor Coil
If the system has been operated with a clean filter in place,
it should require minimal cleaning. If cleaning is needed,
call your dealer for service.
Condensate Drain
During cooling season check at least monthly for free flow
of drainage and clean if necessary.
Outdoor Unit
Grass cuttings, leaves, dirt, dust, lint from clothes dryers,
and foliage from trees can be drawn into coils by movement
of the air. Clogged condenser coils will lower the efficiency
of your unit and could cause damage to the condenser and
compressor.
Periodically, debris should be brushed from the condenser
coils. Use a soft bristle brush with light pressure only. DO
NOT damage or bend condenser coil fins. Damaged or
bent fins may affect unit operation.
