Split System Heat Pumps
Installation Instructions
15
5. Remove screws from compressor mounting plate.
6. Remove or disconnect crankcase heater from
compressor base.
7. Remove compressor from unit.
8. Clean system. Add new liquid line filter drier.
9. Install new compressor on compressor mounting
plate and position in unit. Connect suction and
discharge lines to compressor. Secure mounting
plate with compressor to unit.
Connect wiring. Install crankcase heater.
10. Evacuate and recharge unit.
11. Restore unit power.
Follow safety codes and wear safety glasses and work
gloves.
Crankcase Heater
-- The heater prevents refrigerant
migration and compressor oil dilution during shutdown
whenever compressor is not operating.
Both compressor service valves must be closed whenever
the crankcase heater is deenergized for more than 6 hours.
The crankcase heater is operable as long as the control
circuit is energized.
Outdoor Unit Fans
-- Each fan is supported by a
formed--wire mount bolted to the fan deck and covered with
a wire guard. Fan motors have permanently lubricated
bearings. The exposed end of the motor shaft is covered
with a rubber boot. In case a fan motor must be repaired or
replaced, be sure the rubber boot is put back on when the
fan is reinstalled and be sure the fan guard is in place
before starting the unit.
Coil Cleaning and Maintenance
-- This section discusses
the cleaning and the maintenance of standard coils.
Routine cleaning of coil surfaces is essential to minimize
contamination build--up and remove harmful residue.
Inspect coils monthly and clean as required.
CLEANING STANDARD COILS
-- Standard coils can be
cleaned with a vacuum cleaner, washed out with low
velocity water, blown out with compressed air, or brushed
(do not use wire brush). Fan motors are dripproof but not
waterproof. Do not use acid cleaners.
Clean coil annually or as required by location or outdoor air
conditions. Inspect coil monthly and clean as required. Fins
are not continuous through coil sections. Dirt and debris
may pass through first section and become trapped,
restricting condenser airflow. Use a flashlight to determine
if dirt or debris has collected between coil sections.
Clean coil as follows:
1. Turn off unit power.
2. Remove screws holding rear corner posts and top
cover in place. Pivot top cover up 12 to 18 in. (300 to
450 mm) and support with a board or other adequate
rigid support. See Fig. 7.
3. Remove clips securing tube sheets together at the
return bend end of the coil. Carefully spread the ends
of the coil rows apart by moving the outer sections.
See Fig. 8.
4. Using a water hose or other suitable equipment, flush
down between the sections of coil to remove dirt and
debris.
5. Clean the remaining surfaces in the normal manner.
6. Reposition outer coil sections. Reinstall clips which
secure tube sheets, and replace top cover and rear
corner posts.
7. Restore unit power.
Figure 7 -- Pivot and Support Top Cover
Figure 8 -- Coil Cleaning (Typical)
Содержание CHS180
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Страница 12: ...Split System Heat Pumps Installation Instructions 12 Fig 6 Auxiliary Box Diagram...
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