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9
Before the initial commissioning
1. Checked to ensure that
mechanical installation was
carried out correctly.
2. Proper connection
to the heating system provided
by the customer must
be checked.
3. Check whether hot surfaces are
protected against unintentional
contact.
4. Check whether the electrical
wiring of the units has been
established in accordance
with the valid guidelines and
standards and in accordance
with the accompanying circuit
diagrams.
5. The fan chamber and the intake
and exhaust areas must
be checked for foreign objects.
6. Check whether all blower
outlets are open.
7. Check that the fan moves easily.
8. Disconnect the power supply
to the switchgear (accessory)
and switch on the unit
with the control switch
on the switchgear.
Set the operating switch
for the relevant switchgear
to the “Off” or “0” position.
With longer breaks in operation:
Disconnect the electrical
connection at all poles
Shut off the heating medium
connection
If there is a danger of frost,
the complete system should
be emptied if the heating
medium (water) has not been
mixed with suitable anti-freeze
protection agent
Commissioning Shutdown
During initial commissioning
All regulating, control and safety
equipment must be checked
to ensure that it is functioning and
that the settings are correct during
initial commissioning.
1. The current consumption
of the fan must be measured.
The rated current may
not exceed the value
specified on the name plate
at the respective switching
speeds.
2. Check the fan's control/
regulation function.
3. Check the motor protection
function of the fan if installed
externally.
4. If installed, check that anti-
freeze protection device and
the room thermostats are
functioning.
5. Check the entire system for
tension-free installation and
potential vibrations.
6. Check the heating medium
supply lines for proper
connection and tightness.
CAUTION
Commissioning can only take
place once it has been assured
that the proper assembly
and electrical installation
correspond to the applicable
provisions of the EC Directives.
NOTE
Complete drainage of the heat
exchanger is only possible with
the aid of compressed air.
NOTE
After disconnecting
the switchgear from the power
supply, following a power supply
failure or a fault shut-down,
the control switch must always
be returned to the 0” position
before starting the unit again.
9


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