Commissioning - Carrier 42CT Series Manual

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7. COMMISSIONING

The following procedures are designed as a guide to enable the units to be
commissioned in accordance with the design requirements.
Ensure that the unit is installed correctly and undamaged.
Ensure that all unit sections are thoroughly clean and free from installation
debris, that the filter is clean and free from dust.
Ensure that all access panels and blanking plates are in position and secure.
Ensure that all electrical wiring complies with unit wiring diagram and local
by-laws and that all components, where applicable, are provided with all
necessary safety, protection and isolating devices.
Check that the coil faces are free from any debris and check all coil connections
for leaks.
Ensure that all air is vented from both coils and the system independently.
Check that the small gap between coil cheek plate and the drain pan has not
been blocked by site debris.
Introduce water to the drain pan to verify free flow of water into drain.
Start the fan the system thoroughly.
Check that the unit air volume and the external pressure are as design.
Check that the motor full load current is approximately equivalent to the unit
nameplate value.
Check the on/off temperature across coils and adjust water flows accordingly.
After initial start-up and some continuous running of the unit, it is recommended
that the following are checked; the motor full load current, the filter condition, the
condensate and drains have free flow&no leaks, the valve connections have no
leaks and that the controls operate correctly.
7.1. Service and Periodic Maintenance
IMPORTANT:
Keep fan coil unit installation space clean to avoid dust entering unit, which may
lead to damage or comfort issue.
Disconnect the mains power supply prior to any maintenance operations or
prior to handling any internal parts of the unit.
7.2. Condensate draining
During the summer season check that the condensate drain is free from dust
and lint that could clog it, causing condensate water overflow.
The following procedures are designed as a guide to enable the units to be
commissioned in accordance with the design requirements and should also be
carried out with standard industry management.