508219-01
Issue 2132
Page 33 of 43
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
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.
Condenser Coils
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.
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.
Figure 12. Removing Louvers
Remove two
screws at top
panel to remove
louvers for coil
access.
SHARP OBJECT HAZARD!
Condenser coils have sharp edges. Wear adequate
body protection on body extremities (e.g. gloves).
FAILURE TO FOLLOW THIS WARNING COULD
RESULT IN BODILY INJURY.
WARNING
Painted Surfaces
For maximum protection of the unit’s finish, a good grade
of automobile wax should be applied every year. In
geographical areas where water has a high concentration
of minerals (calcium, iron, sulfur, etc.), it is recommended
that lawn sprinklers not be allowed to spray the unit. In
such applications, the sprinklers should be directed away
from the unit. Failure to follow this precaution may result
in premature deterioration of the unit finish and metal
components.
In sea coast areas, special maintenance is required due
to the corrosive atmosphere provided by the high salt
concentration in ocean mists and the air. Periodic washing
of all exposed surfaces and coil will add additional life to
your unit. Please consult your installing dealer for proper
procedures in your geographic area.
cooling mode using the subcooling method and table
provided on the unit access panel.
•
For systems below 60°F
– charge in heating mode
using the subcooling method and table provided on
the unit access panel. Attach low pressure gauge
hose to auxiliary service port to access suction side in
heating mode.
NOTE:
All unit table values are based on 70 to 80°F
indoor return air temperature for cooling mode, and
65
°
F to 75°F return air temperature for heat mode.
Summary of Contents for 4SCU14LB
Page 34: ...508219 01 Issue 2132 Page 34 of 43 Wiring Diagram Figure 13 A C Single Phase Wiring Diagram ...
Page 35: ...508219 01 Issue 2132 Page 35 of 43 Figure 14 A C Single Phase Wiring Diagram 59 model only ...
Page 36: ...508219 01 Issue 2132 Page 36 of 43 Figure 15 3 Phase 208 230 Volt ...
Page 37: ...508219 01 Issue 2132 Page 37 of 43 Figure 16 3 Phase 460 Volt ...
Page 41: ...508219 01 Issue 2132 Page 41 of 43 Charge Labels Figure 17 4SCU16LE 4SCU14LB 50 ...
Page 42: ...508219 01 Issue 2132 Page 42 of 43 Figure 18 4SCU14LE LB 4 thru 7 ...
