Munters MX2 95 - Operating the Unit; Initial Start-up (Manual Mode); Initial Start-up (Automatic Mode)

5.4 Operatingtheunit
5.4.1 Initialstart–up,Manualmode(MAN)
1. Set the main power s wit ch to position 1 and check that the display lights up.
2. Set the mode switch to MAN position. Check that:
■ The white lamp which indicates that the dehumidifier is in operational mode lights. A few seconds
delay is normal.
■ Thefanshavestarted..
■ The airflows for the process and reactivation air are correct, see section 8.4, Technical data.
3. Run the unit for about 10 minutes to allow the operating conditions to stabilise. Check that:
■ The steam valve is fully opened and the temperature is increasing.
■ The reactivation heater temperature is cor rect.
4. Set the mode switch on the control panel to position 0. In order to dissipate any residual heat, the
reactivation air fan w ill continue to run after the unit has been switched off. The fan will run until the
temperature has fallen below preset temperature, or according to preset time. The default temperature
valueis50°Candthetimevalueis30s.
5.4.2 Initalstart-up,Automaticmode(AUTO)– regulating tosetpoint
In order to operate the unit in automatic mode to a desired set point, a humidity transmitter must be
connected. If the system is equipped with "remote start", this switch must be closed.
If remote start is not used, ensure that the jumper between terminal blocks 9 and 10 in row XT1 is fitted.
The following steps applies irrespective of w hether the unit is controlled by set points entered via the unit's
displayorbyexternalmeans.
1. Set the main pow
er switch to position 1; electrical connection is confirmed by the display lighting up.
2. Adjust the hum
idity set point to the lowest possible value, internally or externally.
3. Set the mode sw
itch to AUTO position. Check that:
■ The white lam
p which indicates that the unit is in operational mode lights. A few seconds delay
is normal.
■ The fans have
started.
■ The heater i
s switched on.
■ Reactivat
ion temperature increases.
4. a) Freque
ncy controlled reactivation fan: Slowly increase the humidity set point and check that the
reactiva
tion airflow decreases to minimum flow when the set point coincide with the actual humidity.
b) Analog
ue controlled steam valve: Slowly increase the humidity set point and check that the
reactiv
ation air temperature decreases to m inimum temperature when the set point coincide with the
actual h
umidity.
5. Set the
mode switch to pos ition 0. In order to dissipate any residual heat, the reactivat ion air fan will
contin
ue to run after the unit has been switched off. The fan will run until the temperature has fallen
below p
reset temperature, or according to preset time. The default temperature value is 50 °C and the
time v
alue is 30 s.
36 Operation 190TEN–1089–G1412