1. Undo circlip 932.04.
2. Take out mechanical seal 433.02.
3. Undo circlip 932.05.
4. Take out casing cover 161.
5. Take out mechanical seal 433.01.
7.4.4 Dismantling the motor section
NOTE
Special regulations apply to repair work on explosion-proof submersible mixers.
Modification or alteration of the submersible mixers may affect explosion protection and
is only permitted after consulting the manufacturer.
NOTE
The motors of explosion-proof submersible mixers are supplied in "flameproof enclosure"
type of protection. Any work on the motor section which may affect explosion protection,
such as re-winding and repair work involving machining, must be inspected and
approved by an approved expert or performed by the motor manufacturers. No
modifications may be made to the internal configuration of the motor space. Repair work
at the flameproof joints must only be performed in accordance with the manufacturer's
instructions. Repair to the values in tables 1 and 2 of EN 60079-1 is not permitted.
When dismantling the motor section and the power cables make sure that the cores/
terminals are clearly marked for future reassembly.
7.5
Reassembling the submersible mixer
7.5.1 General information/Safety regulations
CAUTION
Improper reassembly
Damage to the submersible mixer!
▷
Reassemble the submersible mixer in accordance with the general rules of
sound engineering practice.
▷
Use original spare parts only.
NOTE
Before reassembling the motor section, check that all joints relevant to explosion
protection (flamepaths) are undamaged. Any components with damaged flamepaths
must be replaced. Refer to the "Flamepaths" annex for the position of the flamepaths.
Always reassemble the submersible mixer in accordance with the corresponding
general assembly drawing.
▪
O-rings
– Check O-rings for any damage and replace by new O-rings, if required.
– Never use O-rings that have been glued together from material sold by the
metre.
▪
Assembly adhesives
– Avoid the use of assembly adhesives, if possible.
For reassembly, tighten all screws and bolts as specified in this manual. (
Page 38)
In addition, secure all screwed connections closing off a flameproof enclosure with a
thread-locking agent (Loctite Type 243).
Sequence
Sealing elements
Tightening torques
7 Servicing/Maintenance
Amamix® direkt
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