User`s manual

ML180-MLT350 Dehumidifiers
16
2 Installation 190TGB-1034-A
7. The ML270 has a 3 phase fan motor and the rotation direction of
the fan impeller must be checked after connection to the power
supply. Open the front panel of the dehumidifier and take out the
process filter. Start the dehumidifier and check that the fan impeller
is rotating. Stop the dehumidifier and observe the impeller just
before it stops rotating to check that the rotation direction is
clockwise.
8. If a RH98 has been installed, check that the sensor has been
correctly positioned in the room and has been correctly connected
to the unit, see appendix 7.4, RH98.
9. Set the process and reactivation airflow dampers to the fully open
position.
2.15 Airflow Check and Adjustment
2.15.1 General
To obtain the design performance, the dry air and reactivation airflow
dampers must be correctly adjusted in accordance with the rated
airflow, see section 6.5, Technical Specifications.
If required contact Munters Product Service to receive help with
commissioning the dehumidifier installation, see addresses on the back
cover of this manual for your local Munters representative.
CAUTION! Failure to correctly adjust the process and reactivation airflows
could cause the unit to malfunction.
1. Using the dampers installed in the dry air outlet and reactivation air
inlet ducts, adjust the process and reactivation airflows to the correct
rated airflow.
2. Start the dehumidifier and let it run on full power for approximately
5 minutes to allow the reactivation heater to reach its normal
operating temperature. Refer to Chapter 3, Operation.
3. Check that the temperature differential between the reactivation
supply air and the reactivation air (indicated on the temperature
display) is 95°C (tolerance
±5°C).