Sulzer VMS - Commissioning Checklist

Installation, Operating and Maintenance Instructions (Original Instructions) 15
VMS Vertical Multistage Pumps
15
5.10.4 Commissioning (checklist)
It is compulsory to check these points prior to putting the pump in operation:
• The ATEX code of an ATEX ‘pump with motor’ assembly supplied by Sulzer can be found on the pump
shroud. Check if the ATEX code of the ‘pump with motor’ assembly is in accordance with the ATEX
specication of the motor. For each part of the code the specication of the assembly may not be higher than
the specication of the motor.
• Make sure that the pump is protected against damage from outside.
• Make sure that the medium temperature never exceeds the maximum allowed temperature (see Table
9, “Maximum medium temperatures”). Apply a temperature monitoring and limiting system, meeting the
requirements of EN 13463-6, that stops the pump at too high medium temperatures. Please note that the
maximum temperature noted on the nameplate of the pump refers to the technical specication of the pump
and does not necessarily match with the maximum allowed medium temperature for ATEX applications.
• Apply a monitoring and limiting system, meeting the requirements of EN 13463-6, to prevent dry running.
It has to check the presence of the medium at the inlet of the pump and stop the pump when no medium is
available.
• Apply a monitoring and limiting system to secure that the maximum current for the motor is not exceeded.
• If the motor is suited with a PTC; connect the PTC to a monitoring and limiting system.
• Check if the motor cable is suitable for the current drawn by the motor (see the motor type plate).
• Check if the pump is fully lled with the medium (de-aerated). Do not operate the pump when gas is present
in the pump.
• Check the rotational direction of the motor. The motor has to run clockwise (seen from the non-driven side).
This direction is indicated with an arrow on the motor stool.
• Do not apply higher pressures in the pump than is allowed at the working temperature of the medium. The
allowed pressure can be found on the nameplate of the pump.
• Do not operate the pump at ows lower than specied in performance curve (see the technical
documentation).
• Do not operate the pump at ows higher than specied in the performance curve (see the technical
documentation).
• Do not operate the pump with inlet pressures lower than specied in the NPSHreq requirements
[NPSH
req
+ 1 m] (see the technical documentation).
• Make sure that the maximum particle sizes in the medium does not exceed the values specied at ‘5.8
Working range’.
• The pump has to be de-aerated again when the pump has not operated for a while or gas has gathered in the
pump.
• Wrong adjustment of the coupling can cause interference of pump parts. Assembling and adjusting the
coupling has to be performed by a certied mechanic from the supplier of the pump.
• Make sure the coupling guards are assembled.
• Wrong assembly of the coupling guards could cause them to vibrate during operation of the pump or cause
interference of pump parts. If the coupling guards have to be assembled or reassembled, this has to be done
by a certied mechanic from the supplier of the pump. Make sure that the pump and the motor shaft are
running smoothly without excessive noise (e.g. no parts are running against each other).
• Wrong assembling of the mechanical seal construction (easy access or cartridge) can cause malfunction of
the pump. Assembling of the cartridge/easy access seal construction has to be done by a certied mechanic
from the supplier of the pump.
• Make sure that only media is pumped that is compatible with the seals and elastomers that are applied in the
pump (see technical documentation).
• Electric installation of the pump has to be done by an ATEX-certied mechanic.
• Make sure the pump is electrically connected (earthed) with the surrounding parts of the installation.