Goulds Pumps ICM - IOM - Manual (Page 15)

Installation and Operating Instructions
Model ICM/ICMP, for life grease lubrication
9330-050-en Revision 05
TM 5409 MPE/Re/Wm Page 7 Date 03/2003
2.2 For maintenance
In principle, work on the unit may only be performed
when it is at a standstill.
It is imperative to observe the procedure for stopping
the machine described in this operating manual. See
Section 6.3.
Pumps which convey media which are a health haz-
ard must be decontaminated.
All safety and protective facilities must be remounted
or enabled immediately after the end of work.
In the assemble state, the magnetic drives do not
cause any risks or have any affect on the environ-
ment.
During dismantling and assembly as well as
during transport and storage of the magnetic
drives as single components, the notes on
safety in Section 7.5.2 must be observed.
The points listed in Section 6.1 must be followed be-
fore recommissioning.
2.3 Conversion work and produc-
tion of spare parts by the cus-
tomer
Conversion of or changes to the machine are only
admissible after consultation with the manufacturer.
Original spare parts and accessories authorised by
the manufacturer serve to enhance safety.
The use of other parts may annul the liability for any
resultant consequences.
2.4 Inadmissible modes of opera-
tion
The operational safety of the machine supplied is only
guaranteed if it is used properly in accordance with
Section 1.1 of this operating manual.
The operating limits specified in the data sheet must
under no circumstances be exceeded.
2.5 Explosion protection
If the units are used in potentially explosive areas, the
measures and notes in Sections 2.5.1 to 2.5.8 are
imperative to guarantee the explosion protection.
2.5.1 Filling the unit
During pump operation the wetted interior of
the pump must always be filled with the liquid
medium.
This prevents any explosive atmosphere and the risk
of dry-running.
If the customer cannot ensure this, appropri-
ate monitoring facilities must be provided.
All auxiliary, heating and cooling systems
must also be carefully filled.
2.5.2 Special operating conditions
In the standard design the can chamber and
the plain bearings are cooled and lubricated
by a flushing flow.
The cooling flow may be interrupted and an inadmis-
sible rise in temperature may occur due to properties
of the liquid (e.g. sticking, possibly by an inadmissible
ingress of solids, clogging, ingress of gas etc.). Ap-
propriate monitoring facilities are to be provided. See
Section 5.6.
Operation at Q < 0.3 Q
opt
is to be avoided as there is a
risk of a lack of lubrication or dry-running and there-
fore the maximum operating temperature might be
exceeded.
If the cooling flow is too low or there is none at all, this
may lead to an inadmissible rise in temperature on the
metallic can owing to eddy current losses.
Operation at Q > 1.1 Q
opt
is to be avoided as the dif-
ferential pressure upstream and downstream of the
plain bearings could fall so much that this may result
in a lack of lubrication or dry-running. Consult the
manufacturer for operation with Q < 0.3 Q
opt
and/or Q
> 1.1 Q
opt
.
Overloading, overheating, non-observance of the de-
sign data or the incorrect selection of the magnetic
drive can lead to the decoupling of the inner and outer
magnet assemblies. As a result, eddy currents are
induced on the can and the inner and outer magnet
assemblies and an inadmissible rise in temperature
may occur.
The situation is to be remedied by providing appropri-
ate monitoring facilities. See Section 5.6.
The plant NPSH value (NPSHA) must be 0.5 m higher
than the NPSH value of the pump (NPSHR) to prevent
a lack of lubrication or dry-running of the plain bear-
ings.