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Installation Manual •
MAXIAIR MXP-HPW & HPWI-IOM/1905-E
COMPONENT TO BE INSPECTED AND PROCEDURE
FREQUENCY
CONDENSATE COLLECTION PANS
The water collection pans, always installed below the cooling coil and in the humidification
sections, must be periodically washed to remove any deposits and dirt.
An excessive accumulation of dirt may cause corrosion that attacks the internal insulation of
the pan and, consequently, the metal.
Wash with a strong jet of water. To empty the pan in the humidifying section with pump,
unscrew the overflow pipe.
Monthly
VENTILATING SECTION
BEFORE PERFORMING ANY OPERATIONS ON THE MOTOR-FAN ASSEMBLY, CHECK THAT THE POWER SUPPLY HAS
BEEN DISCONNECTED.
With the fan off, check that the fan impeller is centred on the shaft, that the blades do not rub
on the scroll and that the blades are securely fastened and do not vibrate.
The above-mentioned phenomena may appear over time due, for example, to the
unintended presence of metal residues in the ducting or the natural loosening of the
fastening bolts.
The checks can be performed by turning the impeller manually.
Check that the motor-fan assembly is correctly fitted with vibration damping supports and
the condition and effectiveness of such supports.
Monthly
CAUTION:
AT FAN INLET THE TEMPERATURE OF THE AIR FLOW MUST BE IN THE RANGE [-25 °C; + 60 °C]
BIOXIGEN
®
Tube cleaning (see the maintenance instructions at the paragraph 15) should be performed
with regular frequency according to the type of implementation – from once a month to once
every 3 months
Quarterly
REFRIGERANT CIRCUIT SECTION
Check the level of the refrigerant gas controlling the evaporative pressures and the
condensation pressures of the circuit in summer and winter mode (heat pump).
Check the proper operations of the carter resistances for each compressor.
Check the proper operations of the pressure switch for the high pressure and the low pressure.
Take care of the filters cleaning (if any) and of the condensation coils.
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Cleaning of the internal and external coils
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Cleaning of the elicoidal fans
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Cleaning of the centrifugal fan
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Control of the piping and their supports
•
Control of the insulation of the piping.
Yearly
•
Control of the level of the refrigerant gas through the verification of the proper operating
pressures
•
Control of the oil level on the proper warning light both with the compressors turned off
and with the compressors switched on
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Control of the electrical terminals on the control panel, tightned terminals
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Control alarms and blocks (alarm list on the PLC)
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Control of the remote signals
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Control of the solenoid coils
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Control of the air filters
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Control of the bearings
Six-monthly
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Control of the electrical absorption of the compressors
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Controls of the operations of the carter resistors for each compressor
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Control of the electrical absorption of the fans
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Control of the electrical absorption of the condensation elicoidal fans
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Control of the tightness and of the state of the transmission belts
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Control of the voltage supply of the unit
Quarterly
