SPX W+, Инструкция по эксплуатации, Страница: 15 / 24

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453345 ISS S 07.2010
2. Installation of the Pump
2.1 Positioning
The pump must be positioned so that the suction pipe is as short as
possible and there is a sloping gradient towards the suction port.
Keep the number of valves, bends and tee-pieces on the suction side to
an absolute minimum.
There must be sufficient space around the pump for piping and access
for maintenance.
2.2 Lining up the pipe system
Line up the pipes carefully to the pump suction and discharge nozzles.
Make sure that the pipe system is adequately supported by pipe
supports, so that the pump body is not subject to strains and weight from
the pipe system.
2.3 Power supply
All electrical installation must comply with all applicable codes and
stand ards including those established by the Occupational Safety and
Health Administration (OSHA).
Install a main power disconnect on-off switch that can be locked in the
power off position and have the key removed when service is performed.
Thoroughly read the motor manufacturer’s instructions before making
installation.
The motor should be connected such that the direction of rotation of the
motor (and thus the impeller) is counterclockwise when viewed from the
front towards the suction nozzle of the pump body (fig. 2).
2.4 Water supply for water-flushed shaft seal
Pumps with a water-flushed shaft seal have two hose connectors on the
seal flange. The hose connectors are 1/8 inch NPT and fit a 1/4 inch
plas tic tubing. A flush flow of 4-8 gallons/hour is required. Maximum
pressure is 100 PSIG.
The hose connection in the seal flange should always be positioned
verti cally with the fluid inlet below and the outlet above. See Fig. 3.
Water consumption can be limited by installing a solenoid valve on the
supply side for the flushing water. The open/close function of the
solenoid valve can be controlled by the pump’s start/stop sequence.
Do not use the flushing water connectors for steam condensate. If you
want to use steam as the barrier medium, special aseptic piping is
required. See section 2.5 for connection.
Fig. 3
Fig. 2: Direction of shaft rotation