Gorman-Rupp Pumps VS6A60-B 1321070 thru 1352520 - Manual (Page 16)

OM-06014 ULTRA V SERIES
PAGE B - 9 INSTALLATION
Figure 8. Improper Single Motor Belt Drive
Arrangement (Single Belt Set)
HIGH PUMP TEMPERATURE SHUT­
DOWN FOR DUAL‐MOTOR DRIVE
APPLICATIONS
NOTE
In dual‐motor drive arrangements, the starters for
both motors must be interlocked at the control pan­
el to ensure that both motors shut down if overheat­
ing of either pump should occur.
In a dual‐motor drive arrangement where each
pump is directly driven by its own electric motor, it
is recommended that each pump be equipped
with a high temperature shutdown sensor and that
these sensors be connected in parallel to the pump
control panel(s) so that if either sensor is activated,
both motors shut down (if powered independent­
ly).
It is also recommended that the pump control pan­
el(s) be configured with an alarm system and
manual reset for the high pump temperature shut­
down circuit. In this manner, the cause of overheat­
ing must be investigated and corrected before the
pumping system can be put back into service.
ALIGNMENT
The alignment of the pump and its power source is
critical for trouble‐free mechanical operation. In
either a flexible coupling or belt‐driven system, the
driver and pump must be mounted so that their
shafts are aligned with and parallel to each other. It
is imperative that alignment be checked after the
pump and piping are installed, and before opera­
tion.
NOTE
Check Rotation, Section C, before final alignment
of the pump.
When mounted at the Gorman‐Rupp factory, driver
and pump are aligned before shipment. Misalign­
ment will occur in transit and handling. Pumps
must be checked and realigned before operation.
Before checking alignment, tighten the foundation
bolts. The pump casing feet and/or pedestal feet,
and the driver mounting bolts should also be tightly
secured.
When checking alignment, disconnect
the power source to ensure that the
pump will remain inoperative.
Adjusting the alignment in one direction
may alter the alignment in another direc­
tion. check each procedure after altering
alignment.
Coupled Drives
When using couplings, the axis of the power
source must be aligned to the axis of the pump
shaft in both the horizontal and vertical planes.
Most couplings require a specific gap or clearance
between the driving and the driven shafts. Refer to
the coupling manufacturer's service literature.
Align spider insert type couplings by using calipers
to measure the dimensions on the circumference
of the outer ends of the coupling hub every 90
_.
The coupling is in alignment when the hub ends
are the same distance apart at all points (see Fig­
ure 9).