robatherm RM Series - Fan and Motor

Commissioning and Maintenance
© robatherm 21
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Fan and Motor
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Commissioning
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Caution
Observe general safety instructions on page 3!
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Caution
Serious bodily injuries or even loss of life and material damage can be caused by the
breakage of the impeller. Do not exceed maximum fan speed as per nameplate and
technical data sheet. Do not operate fan if there are abnormal vibrations.
There is a danger of fire through grinding impeller, belt, hot running bearings.
Danger to health through noise (up to approx. 110 dB).
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Only use approved parts with ATEX units. All electrical parts must be earthed.
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Transportation Safety Device
Remove transportation safety devices (wooden wedges or locking plates) from base frame of
fan. Avoid pulling vibration isolators.
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Attention
Before commissioning check unit and duct system for foreign bodies (tools, small parts,
building dust) and clean if necessary.
Rotate impeller by hand to check for free running.
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Plug Fans
During transportation the circumferential gap between the impeller and inlet nozzle may
change. Measure the gap width before commissioning. The gap must be the same width
round the whole circumference; if necessary correct the gap at the vibration damper using
lock nut and adjusting nut (1).
The overlap (R) must be about 1% of the impeller diameter.
There is no need to perform this check for an open impeller with flexible connection.