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7.5
Testing the cooling of the machine
Cooling
● Check that the machine cooling is available for commissioning.
See also
Preparations for use (Page 25)
External fan
● All external fans fitted are ready for operation and have been connected so that they rotate
in the direction specified.
● The flow of cooling air is not impeded.
7.6
Commissioning an external fan
An external fan is suitable for use only in unidirectional operation; refer to the specification of
the direction of rotation on the fan cowl or on the fan unit. The external fan ensures that the
motor is cooled irrespective of the motor speed or direction of rotation.
If the cooling air is in open circulation, it must have only weak, chemically abrasive properties
and only a low dust content.
Checks before the first test run
Before the first test run, carry out the following checks:
● The external fan is correctly fitted and aligned.
● The rotor runs freely.
● All of the retaining elements and electrical connections are securely tightened.
● The grounding and equipotential bonding connections to the mains have been correctly
made.
● The air flow is not impeded or shut off by flaps, covers or similar.
● All protection measures have been taken to prevent accidental contact with moving or live
parts.
Performing the test run
1. Switch the external fan motor on and off briefly.
2. Compare the the direction of rotation of the external fan with the arrow indicating the
direction of rotation. If the direction of rotation and the arrow do not match, then switch two
of the three phases of the external fan motor.
Start-up
7.6 Commissioning an external fan
LOHER CHEMSTAR 1PS2
70
Operating Instructions 08/2016
Summary of Contents for LOHER CHEMSTAR 1PS2
Page 2: ...04 08 2016 11 45 V3 00 ...
Page 64: ...Electrical connection 6 2 Connecting LOHER CHEMSTAR 1PS2 64 Operating Instructions 08 2016 ...
Page 74: ...Start up 7 8 Test run LOHER CHEMSTAR 1PS2 74 Operating Instructions 08 2016 ...
Page 84: ...Operation 8 11 faults LOHER CHEMSTAR 1PS2 84 Operating Instructions 08 2016 ...
Page 102: ...Maintenance 9 2 Corrective Maintenance LOHER CHEMSTAR 1PS2 102 Operating Instructions 08 2016 ...
Page 118: ...Service and Support LOHER CHEMSTAR 1PS2 118 Operating Instructions 08 2016 ...
Page 120: ...Technical data and drawings LOHER CHEMSTAR 1PS2 120 Operating Instructions 08 2016 ...
Page 142: ...Index LOHER CHEMSTAR 1PS2 142 Operating Instructions 08 2016 ...