Xylem IM191 R03 Marlow Series Prime Line Self-Priming Centrifugal Pumps - Manual (Page 6)

6
Hazardous machinery
can cause personal
injury or death.
WARNING
WARNING
Hazardous voltage
can shock, burn or
cause death.
WARNING
Hazardous voltage
can shock, burn or
cause death.
WARNING
Hazardous
voltage
Wiring and Grounding
Install, ground and wire according
to 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
the pump.
Electrical supply MUST match
pump’s nameplate specifications. In-
correct 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
GROUND THE PUMP, MOTOR AND
CONTROLS BEFORE CONNECTING
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.
Impeller Running Clearance (6E1 Only)
(Applicable for models with open impellers)
The impeller running clearance, the distance between the
impeller vanes and diffuser is adjusted at the factory prior
to shipment to .020"-.030". To adjust this clearance in the
field, shut down the pump, disconnect power supply to
the pump and use the following instructions.
1. Unscrew three jack-screws (112), jam-nuts (111) and
bearing carrier capscrews (45).
2. Adjust the jack-screws and capscrews until the
impeller just touches the diffuser (46) (slight rub).
Tighten the jam nuts.
3. Measure the gap between bearing housing surface
(coupling END) and bearing carrier flange.
4. Adjust jack-screws, jam-nuts and capscrews to
pull out the rotating assembly, until the gap between
bearing housing surface and bearing carrier flange
measures .020"-.030" more than previously
measured gap.
NOTE: Tightening the jack-screws will increase the front
clearance and tightening the capscrews will decrease the
front clearance.
Tighten one set of screws and loosen the other to go in
the direction required. Tighten locknut (111).
NOTE: Maximum allowable bearing carrier (110) pull
back movement is 1 ⁄
8
", (i.e. from the condition when
impeller is “just” touching the diffuser you can push back
the bearing carrier assembly by 1 ⁄
8
".
Operation
DO NOT OPERATE FRAME MOUNTED
OR SAE UNITS WITHOUT SAFETY
GUARDS IN PLACE OR SEVERE
PERSONAL INJURY MAY RESULT.
SPLASHING OR IMMERSING OPEN
DRIP PROOF MOTORS IN FLUID
CAN CAUSE FIRE, SHOCK, BURNS OR
DEATH.
OPERATION AT OR NEAR ZERO
FLOW CAN CAUSE EXTREME HEAT,
PERSONAL INJURY OR PROPERTY
DAMAGE.
NOTICE: NO NOT RUN PUMP DRY OR SEAL
DAMAGE WILL RESULT.
STARTING
Follow the motor manufacturer’s instructions carefully.
Before starting fill the pump casing with liquid through
the priming plug provided. Your pump has been designed
to prime itself in a few minutes. High suction lifts require
additional time and reduce the performance of the pump.
Should you have difficulty, refer to the “Troubleshooting
Guide” table.
Goulds Water Technology self-priming pumps prime
and reprime themselves providing the casing is filled
with liquid. Should you lose this liquid from the casing
accidentally or by draining purposely, it will be necessary
to refill it with liquid before starting.
2P through 4P – Check grease in the bearing housing
cavity. Units are shipped with grease but should be
checked before starting. (Refer to Lubrication section for
more details.)
4E and 6E – Units are shipped without oil in the bearing
housing cavity. Fill this cavity with the proper amount
and proper grade of oil. (Refer to Lubrication section for
more details.)
Extreme heat can
cause personal injury
or property damage.
WARNING