Lennox BALTIC Installations-Und Betriebsanleitungen Seite 78

WARTUNGSPLAN
Task
Clean or replace filters:
Disposable, or metal
frame.
Visual check of the oil level
(applicable for units
equipped with sight glass)
and check the oil for acidity
on the refrigerant circuits
Clean condensate drain,
indoor coils and outdoor
coils (following local
regulations)
Check condenser fans
Check for the Amps
consumed
Check Smoke detector
Check CLIMATIC™
control, set-points and
variables
Check refrigeration system
for proper functioning
Check clock settings
Check the position and
tightness of refrigeration
components
Check three way valve on
HWC (If applicable)
Check the position of the
crankcase heaters (around
the compressor) and the
proper functioning of it
Check defrost cycle with 4-
way valve inversion.
Check overall working of
the flow controller (only for
rooftops with water
condensation function)
Check the water flow (only
for rooftops with water
condensation function)
Check the plug fans
(freewheel)
Check the axial extractor
fan ( if the unit is equipped
with )
Check the well working of
the energy recovering
wheels
Check Airflow rate safety
switch (if equipped).
BALTIC-IOM-1711-G
Operating mode
Replace filters with new ones if disposable. Vacuum clean or blow the
dirt. Wash and dry carefully. Replace Filter if necessary by an original
Lennox filter.
Blocked filter will reduce the performance of the unit.
THE UNIT SHOULD NEVER BE OPERATED WITHOUT FILTERS
Visually check the oil level through the sight glass on the side of the
compressor casing
Test the oil every 3 years and after each intervention on the
refrigerant circuit
It's mandatory to clean the external coils, according to the
environment where the unit is located, the frequency of the cleaning
varies from once in a month to minimum twice in a year.
The performance and the sustainability of the machine is based on
the perfect heat exchange.
The use of a neutral pH cleaning product is mandatory.
(WARNING: Fins and copper tubes are very fragile! Any damage
WILL reduce the performances of the unit).
Check the rotation of the fan ( free rotation, detection of vibrations or
bearing noises)
Check for the Amps consumed on all three phases; compare it with
the nominal value given in the electrical wiring diagram.
Check the status of the fan blades and its protections.
Check for the Amps consumed on all three phases; compare with the
nominal value given in the electrical wiring diagram.
Start the unit. Trigger the smoke detector with an aerosol tester.
Reset unit and control.
Refer to the commissioning sheet; Check all set points are set
according to this document.
Retrieve/Check the values of Overheating and subcooling
Check the time and date of the control
Check systematically all connections and fixings 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
Increase room set-point 10°C above the actual room temperature.
Check operation of the piston. It must move away from the valve
head. Reset the control.
Check the well fixation of the crankcase heaters, if it is tight enough
And check the crankcase heaters overall working.
Switch the unit to heat pump mode. Change the set point to obtain
the standard defrost mode and reduce the cycle time to the min
value. Check the operation of the defrost cycle.
Cut-off the compressors, stop the water circulation, then start the unit,
wait for the water flow failing signal in the controller.
Measure the water flow and compare it to the initial value set in the
command selection
Check the rotation of the fan (free rotation, detection of vibration or
bearing noises)
Check for the Amps consumed on all three phases; compare with the
nominal value given in the electrical wiring diagram.
Check the rotation of the fan (free rotation, detection of vibration or
bearing noises)
Check for the Amps consumed on all three phases; compare with the
nominal value given in the electrical wiring diagram.
Check the rotation of the wheel; Check the strap tension;
Replace the components in case of malfunctioning
Shut down supply fan. The fault must be detected within 5 seconds.
+ Half
Monthly + Quarterly
Yearly
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