SS-SVX004C-EN
23
Maintenance
Periodic General Maintenance
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury. Technicians, in order to protect
themselves from potential electrical, mechanical, and
chemical hazards, MUST follow precautions in this
manual and on the tags, stickers, and labels, as well as
the following instructions: Unless specified otherwise,
disconnect all electrical power including remote
disconnect and discharge all energy storing devices
such as capacitors before servicing. Follow proper
lockout/tagout procedures to ensure the power can not
be inadvertently energized.When necessary to work
with live electrical components, have a qualified
licensed electrician or other individual who has been
trained in handling live electrical components perform
these tasks.
Systematic, periodic general maintenance of the remote
condensing unit is recommended for optimum system
performance. General maintenance should include, but is
not limited to, the following: tightening electrical
connections, cleaning the interior of the unit, inspecting
the unit’s components visually, checking the level of
refrigerant and ensuring no moisture is in the refrigerant.
Use copies of the Periodic General Maintenance Checklist
in this manual (Refer to
) to record periodic general
maintenance inspections. For assistance, contact Product
Support. Ensure adherence to all safety statements while
performing any type of maintenance.
Hazardous voltage will still be present even with the unit
turned off at the controller. To isolate the unit for
maintenance, turn off power at the main power disconnect
switch.
Always disconnect main power prior to performing any
service or repairs. To prevent personal injury, stay clear of
rotating components because automatic controls may
start them unexpectedly.
This unit employs high voltage equipment with rotating
components. Exercise extreme care to avoid accidents
and ensure proper operation.
General
Maintenance access to the remote condensing unit is
through the removable panel on top of the unit. Examine
the areas around the air inlet and outlet grills, fans, motors
and coils. Use a vacuum cleaner with a soft bristle brush
to clean dirt from components. Clean the coil of all debris
that will inhibit airflow. This can be done with a soft brush
and compressed air or with a commercial coil cleaner.
Check for bent or damaged coil fins and repair as
necessary. On outdoor units do not permit snow to
accumulate on or around the RCU in the winter. Check all
refrigerant lines and capillaries for vibration isolation and
support as necessary. Check all refrigerant and lines for
signs of leaks.
•
Examine all wiring for signs of chafing, loose
connections or other obvious damage. (Quarterly)
•
Examine brackets, motor mounts and hardware for
loose or missing parts or other damage. (Quarterly)
•
Clean accumulations of dust and dirt from all
interior and exterior surfaces. (Quarterly)
Compressor
NOTICE
Compressor Failure!
Prior to initial start-up (only when main power has
been disconnected for 12 hours or longer), allow at
least two hours with main power reconnected. This will
allow sufficient time for the crankcase heaters to
evaporate any liquid that may have migrated to the
compressor crankcase. When this procedure is
completed, the unit is ready to be run.
The refrigerant compressor and its drive motor are
hermetically sealed. The compressor crankcase has a
lifetime supply of oil and the drive motor has permanently
lubricated sealed bearings. Check the refrigerant for
moisture and discoloration using the sight glass while the
unit is running. Check the refrigerant charge by measuring
the superheat and sub-cooling temperatures. If low on
charge, check for refrigerant leaks.
This equipment should be serviced and repaired by a
journeyman or a qualified refrigeration technician only.
WARNING
Fluorophosgene, a deadly, poisonous gas, is generated
when refrigerant is exposed to flame. Always ensure
adequate ventilation during refrigeration repairs.
Always recover all refrigerant prior to any system repairs,
failure to do so may result in system over pressurization
and rupture.
