31
EN 5675-L
12�7 Bearings and mechanical seals
cylindrical roller bearing.
Shaft sealing is by means of double mechanical seals. XFP-PE3 has an additional inner lipseal at the motor
side.
ATTENTION! Once removed, bearings and seals must not be re-used, and must be replaced in
an approved workshop with genuine Sulzer spare parts.
12�8 Changing the power cable
The
,
in strict adherence to relevant safety regulations.
PE1 & PE2:
To facilitate quick and easy changing or repair of the power cable, the connection between the cable and motor
is by means of an integrated 10-pole terminal block.
12�9 Clearing pump blockage
12�9�1 Instructions for operator
The operator should only attempt to unblock the pump by re-setting the overload reset button or MCB on the
control panel. The initial start force may be enough to displace any clogged material. If the pump continues to
To carry out the procedure above safely the control panel must not need to be opened to do so. The
overload reset button or MCB must therefore be an externally mounted design.
12�9�2 Instructions for service personnel
The pump must be isolated from the power supply before removing it from the installation.
Adequate personal protective equipment must be worn at all times (see Section 3.1).
Lifting safety regulations must be adhered to when lifting the pump (see Section 8).
1. Ensure that the pump is secured so that it cannot topple or roll over.
2. Use pump pliers to check for rags etc in the volute inlet and discharge, and try to turn the impeller by hand
to check if there is anything jammed behind it.
Attention:
something sharp piercing the gloves and skin.
3. Remove the bottom plate and clear out any debris with a pliers.
4. If the impeller is still jammed from behind then the impeller has to be removed.
5. The impeller and bottom plate should be checked for impact and wear damage.
6.
7.
Attention: the gap between the bottom plate must be checked and adjusted if necessary (see Section
12.6). This is important as a measure to help prevent future blockages.
8. Reconnect the pump to the power source and dry run to check audibly for bearing or other mechanical
damage.
Attention: secure the pump so it cannot roll or fall on starting, and do not stand near the pump or directly in
front of the pump discharge.
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