Goulds Pumps NM3171 - IOM User Manual

Page 18

ASSEMBLY OF MOTOR TO MOTOR
SUPPORT

If motor is shipped from Goulds' factory, both
coupling halves will be assembled on shafts in their
correct positions. If motor is shipped direct or
furnished by customer, the motor half coupling must
be fitted on motor shaft.

Place motor on motor support (240) and tighten hex
cap screws (370U) snugly.

ROTATION CHECK

Before coupling is connected, motor should be wired
and the direction of rotation checked. A rotation
arrow is located on the motor support (240).

Standard rotation for Model NM 3171 is clockwise
(CW) as viewed from the driver.

CAUTION

Serious damage may result if pump is run in
the wrong direction.

CONNECTION OF PIPING

Connect discharge piping to discharge pipe flange
(195C) above mounting plate (189). This piping
should be independently supported, should align
naturally with the discharge flange, should be as
direct as possible and should have a minimum
number of fittings. A gate valve should be used for
flow control. There should be no strain on the piping,
and a properly restrained expansion joint must be
used.

WARNING

Never draw piping into place by forcing at
the flange connections of the pump. This
may impose dangerous strains on the unit
and adversely affect the operation of the
pump resulting in physical injury and
damage to the equipment.

ALIGNMENT OF FLEXIBLE COUPLING

Check for coupling alignment by laying a straight
edge across both coupling rims at four points 90
degrees apart. When the straight edge rests evenly
at all four points, the coupling will be in correct
alignment. Tighten hex cap screws (370U).

NM 3171 IOM 5/08