• 41 •
Installation Manual •
COMPACTAIR ADV IOM-MIL157E-0418
Task
Operating mode
Monthly
+
Quarterly + Half Yearly
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 Filter if necessary by an original
Lennox
fi
lter.
Blocked
fi
lter will reduce the performance of the unit.
THE UNIT SHOULD NEVER BE OPERATED WITHOUT FILTERS
•
Visual check of the oil level (if sight glass
fi
tted) and
check the oil for acidity on the refrigerant circuits
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
•
Clean condensate drain, drain pan, indoor coils and
outdoor coils (following local regulations)
It’s mandatory to clean the external coils, according to the environ-
ment where the unit is located, the frequency of the cleanning 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).
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|
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Check for the Amps consumed
Check for the Amps consumed on all three phases; compare with the
nominal value given in the electrical wiring diagram.
|
Check Smoke detector (if
fi
tted)
Start the unit. Trigger the smoke detector with an aerosol tester. Reset
unit and control.
|
Check CLIMATIC™ control, set-points and
variables
Refer to the commissioning sheet; Check all set points are set accor-
ding to this document.
|
Check refrigeration system for proper functioning
Retrieve/Check the values of Overheating and subcooling
|
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 conduc-
ted. Check operating pressures correspond to the ones, indicated on
the commissioning sheet
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Check the position of the crankcase heaters (
around the compressor, if
fi
tted) and the proper
functioning of it
Check the well
fi
xation of the crankcase heaters , if it is tight enough
And check the crankcase heaters overall working.
•
Check defrost cycle with 4-way valve inversion.
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.
|
Check the plug fans ( freewheel)
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 Air
fl
ow rate safety switch (if
fi
tted).
Shut down supply fan. The fault must be detected within 5 seconds.
•
Check economizer actuator operation
Check all
fi
xings and transmission. Stop the unit using the control.
The fresh air damper must close. Start the unit, the fresh air damper
should open.
Make a forced opening and closure of the motorized dampers.
|
Check tightness of all electrical connections
Power down the unit and check and tighten all screws, terminal and
electric connections (including the terminal boxes)
When turning on the unit, check the deterioration of the electrical
components with a thermal camera, with the unit working at 100% of
it’s power.
|
Check HP / LP safety switches
Install a pressure gauge HP / LP and check if the safety switches
overall working.
|
Check the value of the analogue sensors
Install the pressure gauge calibrated to check the analogue sensors .
Install a thermometer calibrated to control the sensors.
|
Check the position of all sensors
Check the good positioning and the
fi
xation of all sensors.
•
Check electric heater element for excessive
corrosion
Turn off
the unit; Pull the electric heater out of the heater module box
and check the resistances of traces of corrosion; Replace resistance
as required;
|
Check anti-vibration mountings, for wear and tear.
Visually check anti-vibration mountings on compressors. Replace if
damaged.
•
Check casing and equipment corrosion
To treat and neutralize eventuals rust spots
•
4. MAINTENANCE
4.2. MAINTENANCE PLAN
