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Tab. 6
Setting of control devices
Differential air pressure switch (outlet air flow)
Differential air pressure switch (dirty filter)
Values to be calibrated depending on the application.
Tab. 7
Setting of safety-control devices
Maximum pressure switch
Minimum pressure switch
Modulating condensation control device
Time lapse between two compressor starts
8.2
Maximum pressure switch
The high pressure switch stops the compressor when the outlet pressure exceeds the set value.
Warning:
The high pressure switch must be manually reset; this is possible only when the pressure falls below the set differential
(see Tab. 7).
8.3
Minimum pressure switch
The low pressure switch stops the compressor when the inlet pressure falls below the set value for more than 120
seconds. The switch is automatically reset when the pressure rises above the set differential (see Tab. 7).
9
Maintenance
The
only
operations
All other operations are to be considered maintenance work and must thus be carried out by qualified personnel trained
to do their job in accordance with current laws and regulations.
9.1
Warnings
All the operations described in this chapter MUST ALWAYS BE PERFORMED BY QUALIFIED
PERSONNEL ONLY.
Before carrying out any work on the unit or accessing internal parts, make sure you have
disconnected
The upper part and the outlet pipe of the compressor reach high temperatures. Be especially careful
when working in the surrounding area with the panels off.
Be especially careful when working in proximity to finned coils since the 0.11 mm thick aluminium fins
can cause superficial injuries due to cuts.
After completing maintenance jobs, always replace the panels enclosing the units and secure them
with
the fastening screws provided.
INNOV@ ECFAN DMR -AGU-0912-E
Control device
Control device
Do not attempt to change the setting of the maximum pressure switch: Should the latter
fail to trip in the event of a pressure increase, the pressure relief valve will open.
to
be
performed
it from the mains electricity supply.
Set point
Pa
50
Pa
250
Activation
Bar
28.0
Bar
1.4
Bar
14
s
480
by
the
user
are
to
Differential
Resetting
4
Manual
1.3
Automatic
7
-
switch
the
unit
On
-
and
Off.
• 15 •
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