Cotes C30C, Руководство пользователя

Страница: 28 / 48

COTES C30 OPERATING AND SERVICE HANDBOOK page 28/48
d) Once the dehumidifier is operating, you should adjust the air flows
Adjust the dampers on process air and regeneration air so the incoming air flow matches the nominal
values given on page 16. Check the air flows using a suitable instrument (pitot pipe/thermo-
anemometer or similar) in the duct.
If it is difficult to measure the flow in the regeneration pipe, the regeneration flow may be adjusted by
the current consumption on the machine. As a PTC-type heater is used, the current consumption of
the dehumidifier is dependent on the flow. Adjustment of flow by current is a less accurate method.
The nominal current is:
Model C30E - 0.9 C30E - 1.2 C30E - 1.9
Nominal
Current [A]
5,6 7,2 4,1
Adjusting the current sensor relay
The current sensor relay is monitoring the current used
by the PTC heating element. If the regeneration flow is
reduced or stopped (by a damaged fan) the current
uptake by the heater drops. The reduced flow is often
caused by a blocked filter but it can also be caused by a
damaged heater or regeneration fan.
The sensor is adjusted from factory but it is
recommended to do an adjustment on site. The
adjustment of the sensor is done after adjusting the flow
(see above) by:
1. Read power consumption on the ampere meter
on the front of the machine.
2. Unplug the machine or turn off the main switch.
3. Open electrical board by removing multiple
screws in the top.
4. Adjust relay to 80-90 % of measured (1)
depending on how big margin you wish.
90 % is the recommended value.
NOTE
To ensure stable operation of the dehumidifier with condensation or heat recovery unit the
regeneration filter
– found in the dehumidifier – must be removed.