Piping; Suction; Discharge; Wiring And Grounding - ITT GOULDS PUMPS 3656 Instrucciones De Operación, Instalación Y Mantenimiento

• Final alignment is achieved when parallel and angular
requirements are satisfied with motor hold-down bolts tight.
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY MECHANICAL
ADJUSTMENTS.

Piping

• Piping should be no smaller than pump's discharge and
suction connections and kept as short as possible, avoiding
unnecessary fittings to minimize friction losses. See Table 1.
• All piping MUST be independently supported and MUST
NOT place any piping loads on the pump
NOTICE: DO NOT FORCE PIPING INTO PLACE
AT PUMP SUCTION AND DISCHARGE
CONNECTIONS.
• All pipe joints MUST be airtight.
PIPING – SUCTION
• For suction lifts over 10 ft. (3 m) and liquid temperatures
over 120° F (49° C), consult pump performance curve for
net positive suction head required (NPSH
• If a pipe size larger than pump suction is required, an
eccentric pipe reducer, with the straight side up, MUST be
installed at the pump suction.
• If pump is installed below the liquid source, install a gate
valve in the suction for pump inspection and maintenance.
NOTICE: DO NOT USE THE GATE VALVE TO
THROTTLE PUMP. THIS MAY CAUSE LOSS
OF PRIME, EXCESSIVE TEMPERATURES
AND DAMAGE TO PUMP, VOIDING
WARRANTY.
• If the pump is installed above the liquid source, the following
MUST be provided:
• To avoid air pockets, no part of the piping should be above
the pump suction connection.
• Slope the piping upward from liquid source.
• Use a foot valve or check valve ONLY if necessary for
priming or to hold prime during intermittent duty.
• The suction strainer or suction bell MUST be at least
3 times the suction pipe diameter area.
• Insure that the size and minimum submergence over
suction inlet is sufficient to prevent air from entering pump
through a suction vortex. See Figures 3 through 6.
H min.
D
Figure 3
3.0D
min.
1.5D
H min.
min.
D min.
D D
2
Figure 5
4
).
R
H min.
D
Figure 4
H
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1 2 3 4 5 6 7 8 9 10111213141516 V
V = Velocity in feet per second
= GPM x 0.321 GPM x 0.4085
2
Area D
Figure 6
PIPING – DISCHARGE
• Install a check valve suitable to handle the flow, liquids and
to prevent backflow. After the check valve, install an
appropriately sized gate valve to be used to regulate the
pump capacity, pump inspection and for maintenance.
• When required, pipe increaser should be installed between
the check valve and the pump discharge.

Wiring and Grounding

Install, ground and wire according to
WARNING
local and National Electrical Code
Requirements.
Install an all leg electrical power
disconnect switch near the pump.
Disconnect and lockout electrical
power before installing or servicing
Hazardous voltage
can shock, burn or
the pump.
cause death.
Electrical supply MUST match
pump's nameplate specifications.
Incorrect voltage can cause fire,
damage motor and void the warranty.
Motors without built-in protection MUST be provided
with contactors and thermal overloads for single phase
motors, or starters with heaters for three phase motors.
See motor nameplate.
• Use only copper wire to motor and ground. The ground
wire MUST be at least as large as the wire to the motor.
Wires should be color coded for ease of maintenance.
• Follow motor manufacturer's wiring diagram on the motor
nameplate or terminal cover carefully.
FAILURE TO PERMANENTLY
WARNING
GROUND THE PUMP, MOTOR AND
Hazardous
CONTROLS BEFORE CONNECTING
voltage
TO ELECTRICAL POWER CAN CAUSE
SHOCK, BURNS OR DEATH.

Rotation

NOTICE: INCORRECT ROTATION MAY CAUSE
DAMAGE TO THE PUMP AND VOIDS
THE WARRANTY.
• Correct rotation is right-hand, CLOCKWISE when viewed
from the motor end. For frame mounted units, switch power
on and off quickly to observe rotation. On close coupled
units, remove motor end plug or cover to observe rotation.
• To reverse three phase motor rotation, interchange any two
power supply leads.

Operation

DO NOT OPERATE FRAME
WARNING
MOUNTED OR SAE UNITS WITHOUT
SAFETY GUARDS IN PLACE OR
SEVERE PERSONAL INJURY MAY
RESULT.
Hazardous machinery
can cause personal
injury or death.