38
The open refrigerating machine is driven
by a conductive V-belt and a motor with
pressure-proof housing. The explosion-
proof solenoid valve bypass system ensures
precise control. The refrigerating system
is protected against malfunction by an
explosion-proof pressure switch, as well
as by a protective motor switch.
Refrigerating machine –
open compressor with belt
drive
The switch cabinet is equipped with a
pressure-proof housing. Thus, large part of
the electric system can be manufactured
using standard components. This pressure-
proof housing „d“ according to DIN EN
60079-1 effectively avoids inflammation
of the atmosphere surrounding the switch
cabinet.
Switch cabinet –
pressure-proof housing
Safety X-Line
Operation and control of the appliances
is effected by means of the modern, digital
control unit. A digital interface for this
control unit is optionally available. The
option Program Control allows complex,
several days‘ programs with cyclizations
and loops.
Digital control
Up to a working temperature of 35 °C,
the fan and the integrated motor are located
in the test room. For higher working
temperatures, the motor driving the fan
wheel in the test room will be installed
outside the appliance. In any case, the
motor will be disconnected permanently
by a protective motor switch in case of a
failure.
Fan motor
Standard Equipment Safety X-Line
