Lennox BAC 024 SNM 3M, Installation, Operating And Maintenance Manual

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BALTIC-IOM-0412-E / Service manual
MAINTENANCE PLAN
Task Operating mode Monthly Quarterly 6 monthly
Yearly
before
winter
Estimated
time
(min)
Clean or replace
fi lters: Disposable, or
metal frame.
Replace fi lters with new ones if
disposable. Vacuum clean or blow the dirt.
Wash and dry carefully. Replace media
if necessary
Blocked
fi lter will reduce the performance
of the unit.
THE UNIT MUST NOT OPERATE
WITHOUT FILTERS
Visual check of the
oil level
Visually check the oil level through the
sight glass on the side of the compressor
casing
Centrifugal fan
bearings check
Isolate unit from the main power supply;
Push the fan wheel manually and
check for abnormal noises. Bearings
are lubricated for life but may need
replacement after 10000 hours
Check absorbed
Amps
Check absorbed Amps on all three
phases; compare with the nominal value
given in the electrical wiring diagram.
Check Smoke
detector
Start the unit. Trigger the smoke detector
by moving a magnet around the detector
head. Reset unit and control.
Check CLIMATIC™
control, set-points and
variables Refer to the commissioning sheet; Check
all set points are set according to this
document.
Check clock settings Check the time and date of the control
Check the position
and tightness
of refrigeration
components
Check systematically all connections and
fi xings on the refrigeration circuit. Check
for oil traces, eventually a leak test should
be conducted. Check operating pressures
correspond to the ones indicated on the
commissioning sheet
eDrive™ elastomeric
tire status Check the tire status. Replace weared tire
if necessary.
Check Air fl ow rate
safety switch (if fi tted).
Shut down supply fan. The fault must be
detected within 5 seconds.
Check freeze
protection on HWC