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1.1. General
The dehumidifiers are mounted on 2 skids at the front and 2 fixed wheels at the back. These allow
secure siting of the units and make provision for local manoeuvring. All units are designed to allow
lifting by forklift. Dimension and weights are shown below:
Voltage Supply 230V. 4% 50 Hz. Single Phase.
The supply current required by each model is detailed in Section 4.
The unit is constructed around 4 'pentapost' type pillars. The panels are screwed into the pillars via a
series of screws and captive nuts fitted inside the pillars. Removal of the side panel allows access to
the control void where the majority of the controls are located. These controls should not be altered
from their factory settings. The upper front panel carries the inlet grille and allows access to the air
filter. This panel sits on the lower front panel supported by studs and is removed by using the keys
provided to unlock the panel, and hinging forward.
The control panel allows switching between different modes, see section 5.
1.2. Refrigeration system
Compressor type: Scroll
Compressor oil type : Mineral
Refrigerant type: R22
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The evaporator with heat pipes is mounted vertically behind the front grille.
The condenser is mounted horizontally at the top of the unit below the discharge grille.
To prevent the evaporator coil freezing below design range conditions, a low pressure cut-out is
included in the refrigeration system. This detects if the condensate is freezing on the evaporator and
stops the compressor. The coil is allowed to thaw passively before the compressor is restarted.
Weight (mm)
Height (mm)
150
920
169
1234
173
1234
Model
Depth (mm)
Width (mm)
MD100
770
690
MD160
770
690
MD200
770
690
Model
Refrigerant
Charge (g)
MD100
1500
MD160
2000
MD200
2200
QA/IOM/46 Issue 11 - MD Dehumidifier