Carrier 39E Operations Instructions download pdf (Page 11)

4.5 - Coolers

- Check the connections in accordance with the dimensional

drawing.

- Control the connections for leaks.

- Check drain trap. If CHH standard siphon trap is used,

check it has been correctly installed. Check if siphon

cover and ball have been correctly installed.

- Check if the droplet eliminator after the cooler has been

correctly installed.

- Check if fins have been bent during transport. Correctly

straighten the fins.

- If a cooling coil is incorporated, after several days of

cooling operation check the condensate drain and opera-

tion of the plastic siphon. If necessary clean the siphon.

4.6 - Heat recovery wheel

- Check that the wheel is rotating in the correct direction.

This is indicated by an arrow on the casing.

- Check if the wheel seals are fitting correctly.

- Check if belt tension is correct.

- Check if the motor and the rotation monitor have been

correctly connected.

- Check if the controller has been correctly connected and

set in accordance with the instructions of the supplier.

- Check if the rotor speed has been set correctly.

- The following warning pictogram is attached to the panel:

rotating parts.

4.7 - Plate heat exchanger

Used if dampers are installed.

- Check if the actuator motor has been installed in

accordance with the instructions of the supplier.

- Check if the correct angle has been set.

- Check if the dampers close correctly.

- Check if the damper can open to the correct position.

- Check operation after the power has been restored

following a power cut. Some dampers must be open,

others must be closed.

- Check if fins have been bent during transport. Correctly

straighten the fins.

- Check if the siphon has been correctly installed. Check if

siphon cover and ball have been correctly installed.

4.8 - Direct steam humidification

- Check the fixing of the steam pipe.

- Check the steam supply and condensate drain pipes.

- For longer pipes install an extra condensate pan in

accordance with the instructions of the supplier.

- Check if the pollution trap has been installed.

- The condensate drain should not be without pressure in

accordance with the manufacturer’s instructions. Refer to

the instructions of the supplier.

- If the AHU has negative pressure, install a special siphon

ahead of the condensate drain.

- Before starting up the steam humidifier steam must be

introduced slowly into the system to bring the humidifier

to the correct operating temperature. Once the condensate

pipe has reached the operating temperature, start the actuator

motor electrically or pneumatically and set the desired

humidity level. Refer to the instructions of the supplier.

- A few days after starting up the unit clean the sieve of the

pollution trap and check the condensate drain. For casings

with negative pressure the operation of the negative

pressure system must be controlled with the check valve.

- The following warning pictogram is attached to the panel:

hot surface.

4.9 - Electrical steam humidification

- Check the fixing of the steam generator.

- Check the steam supply and condensate drain pipes.

- The condensate drain should not be without pressure in

accordance with the manufacturer’s instructions. Refer to

the instructions of the supplier.

- If the AHU has negative pressure, install a special siphon

ahead of the condensate drain.

- Check the voltage and measure the total current draw.

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Carrier 39E Operations Instructions Page 11

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