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7 - MAINTENANCE/SERVICE INTERVALS
7.5 - ELECTRIC HEATERS
The electric heater requires very little maintenance. However, the following checks are necessary:
Visually inspect the heating elements, wires and connection cables after every 1500 hours of operation.
Check and retighten the connections once or twice a year.
7.6 - HYDRAULIC COILS
The hydraulic coil requires very little maintenance as it is protected by the filter.
7.7 - SERVICE INTERVALS
Regular maintenance will keep the unit running at optimum performance. The values given in the table below are provided for guidance
only. They do not take into account individual factors that can lengthen or shorten the unit's service life.
8 - PROBLEMS/CAUSES/SOLUTIONS
Refer to the control manual for the 39HX Control
Components
Filters
Fans
Electrics box
Pressure/temperature sensor
Condensate pan
9 - TESTS AND GUARANTEES
To guarantee the product's quality, each 39HX air handling unit undergoes a variety of tests: EMC (electromagnetic compatibility) test,
component functional tests (fan motor assembly, heat recovery unit, sensor, etc.).
However, our units are guaranteed for a period of 12 months from the commissioning date, when this date occurs within three months
of the invoice date.
It is effective for a period of 15 months from the unit invoice date in all other cases.
CIAT's guarantee on motors is limited to the terms of guarantee extended by its supplier.
Under no circumstances must the fitter carry out work on the motor. This will invalidate any future claims on the warranty.
Note: for further information, refer to the application of the Carrier warranty.
At commissioning
2 to 3 months
Check the fouling level and
replace if necessary
Check the connections
Check the connections
Operating check
Check correct operation
Check correct operation and
and setpoint adjustment
setpoint adjustment
Clean with water and a
non-abrasive detergent
12 months
Replace
Retighten the connections
Retighten the electrical
connections
Check the components
Operating check
Check correct operation and
setpoint adjustment
Clean with water and a
non-abrasive detergent
Operating readings
35
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