12 | Repair
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Operating instructions CMVpro 125-400 ATEX | Version 1-en
6.
Only for removal of the casing: Remove or disconnect the drain pipe to the
siphon from the condensate drain type V (option).
7.
Loosen sleeves on inlet and outlet connections.
8.
Remove removable duct section from inlet connection
_
Risk of contamination of the ductwork
Cover open ductwork ends with plastic sheeting during repairs.
12.5
Impeller exchange
Conditions:
• Fan has been prepared for repairs
_
69].
Procedure:
• Remove splinter protection.
• Remove snap hooks.
• Loosen fastening screws on
inlet cover.
• Carefully remove inlet cover
from casing.
NOTICE
The sealing ring
can stick to the casing and
become damaged.
• Remove sealing ring.
Fig. 35:
Removing inlet cover
• Cut out and remove hub cap with ap-
propriate tools.
• The hub cap cannot be removed
non-destructively - order spare
part in a timely manner.
NOTICE
Do not reuse hub cap that has
been removed! Only a leakproof, undam-
aged hub cap prevents aggressive con-
veyed media from corroding the motor
shaft and impeller hub, resulting in de-
struction of the impeller.
Fig. 36:
Removing hub cap