Kaiser-Motoren D Serie Betriebsanleitung Seite 27

Anti condensation heater
In such cases, the application of a space heater can effectively help prevent the formation
of condensate. Alternatively to the installed heating element, the heating can also be
effected via the motor winding.
Venting screw/drain plug
Upon special request, Kaiser stainless steel motors are supplied with specially designed
venting screws/drain plugs which are installed in the deepest position of the motor with
reference to the final installation position.
In easy cases, these can on the one hand help prevent the excessive condensate
formation and on the other hand enable the drainage of the developed condensate in
which the case the protection class IP66 is possibly maintained. Should, in a particular
individual case, the drain plugs be evaluated as inappropriate/inadmissible, the alternative
sealing plugs must be regularly opened in order to discharge possible condensate water.
The necessary maintenance intervals extremely depend on the environmental conditions,
so that no generally valid guidelines can be stated. It is advisable, if there are no empirical
values, to carry out a check after the first 80-200 operating hours in order to determine the
amount of condensate water.
Attention: with corresponding environmental conditions, it must be ensured that the venting
holes in the drain plugs remain penetrable and do not clog.
Attention:
Motors of the series TENV .., which are prepared for venting screws/drain plugs, do thus
not correspond to the protection class IP69K any more.
Disassembly of the Stainless Steel Motors
In order to disassemble the motors, all 4 tie-bolts on the NDE must be loosened with
approx. 5-6 turns. With light knocks with a plastic or rubber hammer on the cap nuts, the
DE-shield/flange will be pushed to the front out of the centring of the stator. If the O-ring is
free, the DE-shield/flange can be pulled out of the motor together with the shaft.
Attention: By no means should one try to open the motor with a screw driver or the like, in
the joint between shield and housing.
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