29
Maintenance
General
Qualified technicians must perform routine
service checks and maintenance. This
includes
reading
and
recording
the
condensing and suction pressures and
checking for normal sub-cooling and
superheat.
Air-cooled chillers require maintenance
schedules/procedures.
Unit
specific
instructions are included in this manual.
Compressors
The scroll compressors are fully hermetic and
require no maintenance except keeping the
shell clean.
Refrigerant Suction Line Filter
Each
refrigerant
circuit
contains
a
replaceable core suction line filter.
One
month after start-up
, remove the filter
element.
The replaceable core suction filters are
provided with pressure taps and shutoff
valves for isolation when removing the filter.
For safety purposes a service manifold must
be attached prior to filter maintenance.
Suction Filter Removal Instructions
1.
Shut down operation of the unit
2.
Close both shut-off valves to isolate
the suction filter
3.
Reclaim the refrigerant from the
suction filter section
4.
Remove the bolts from the suction
filter end plate
5.
Remove the pleated filter assembly
Prior to filter core service, a service
manifold MUST BE attached to in and
out pressure connections to assure no
pressure
exists
during
filter
maintenance. Non-compliance could
result in injury or violation of EPA
regulations.
Service gauges MUST BE connected
before operating the isolation valves
for the replaceable core filter.
WARNING
WARNING
Summary of Contents for LN Series
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