Xylem AC1683B Marlow Series Cast Iron Swimming Pool Pumps 3B28EC – 3B32EC - Manual (Page 4)

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MAINTENANCE cont.
tightening hand knob by hand only. The pump seal requires
no lubrication. The electric motor has bearings and you
should refer to the motor manufacturer’s instructions for
proper maintenance.
STORAGE
If your pool is deactivated until next season, care must be
taken to protect the pump-motor from damage and ex-
posure. Over the winter, store the pump-motor unit in a
warm, dry location.
NOTE: Be certain power is turned off at the control panel.
Next drain the casing by removal of both drain plugs.
Disconnect the suction and discharge lines at the union
connections, then move unit to warm, dry indoor location.
When activating the pump again, reverse the above
procedures. Replace the gasket between the tank and seal
plate if damaged. Install drain plugs. Check the pump shaft
for free movement. Prime the pump as above and check the
rotation of pump shaft.
REPLACEMENT PARTS
This unit is designed to provide maximum electrical safety.
To assure continued protection against shock hazard use
only identical factory supplied replacement parts when
servicing.
WARNING
When installing and using this electrical equipment, basic
safety precautions should always be followed, including the
following:
SAFETY INSTRUCTIONS
SAFE THESE INSTRUCTIONS:
This is a SAFETY ALERT SYMBOL. When you see this symbol on the pump or in the manual, look
for one of the following signal words and be alert to the potential for personal injury or property damage.
1. READ AND FOLLOW ALL INSTRUCTIONS.
2. To reduce the risk of injury, DO NOT PERMIT CHILDREN TO OPERATE THIS PRODUCT
UNLESS THEY ARE CLOSELY SUPERVISED BY AN ADULT at all times.
CAUTION 3. This pump is intended for use on Swimming Pools, only as described in this manual. Do not use
attachments not recommended by the manufacturer.
4. All electrical wiring of the motor installation must be done by a licensed electrician in accordance
with applicable electrical codes. Before working on motors be certain that the electrical power is
off at the main junction box. Disconnect the fuse or circuit breaker and have the main switch
tagged “Do Not Energize This Switch, Personnel Working on Equipment".
5. Motors driving the pumps may operate at high temperatures. To avoid burns, keep hands off the
motor shell, etc.
6. Do not operate this unit without terminal cover in place.
7. The unit must be connected only to a supply circuit that is protected by a ground-fault circuit-
interrupter (GFCI). Such a GFCI should be provided by the installer and should be tested on a
routine basis. Consult GFCI manufacturer’s instructions for correct testing and operation.
8. Never drop or insert any object into any opening of the pump or motor.
9. No modifications, additions or deletions should be made to the pump.
WARNING
All electric work must be done by a licensed
electrician. Before working on motors be certain that the
electrical power is off at the main junction box.
Disconnect the fuse or the circuit breaker and tag the
main switch: “Do not energize this switch. Personnel
working on equipment.” Failure to follow these instruc-
tions may result in personal injury, death or property
damage.
WARNING (READ CAREFULLY)
Some motors are equipped with built-in thermal
overloads to shut off the motor in the event the tem-
perature becomes excessive (as a result of mechanical or
electrical problems; such as low voltage, poor ventilation,
overloaded lines, etc.). These motors will restart auto-
matically as the motor cools down. For safety sake, do
not work on any motor, without first shutting off the
electricity at the source as outlined above in the
“Warning”. Failure to follow these instructions may result
in personal injury, death or property damage.
NOTE
Failure to follow these instructions may result in personal injury, death, or property damage.
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3. Tighten the pump fittings only as much as it is required to
insure a tight connection (two turns past hand tight is
sufficient). Excessive torque (more than 30-foot pounds) is
unnecessary and may damage the pump.
4. The weight of the piping should be supported indepen-
dently and not carried by the pump.
ROTATION
The pump is specifically designed to rotate in a counter
clockwise direction when viewing the motor from the pump
suction. Three-phase motors can rotate in either direction.
Momentarily, start or “bump” the motor to check the rotation
of the pump shaft. Interchanging any two leads of a three-
phase motor will reverse the rotation.
PRIMING
Fill the pump tank with water before starting. This may be
done through the strainer cover. This is necessary to allow
pump to prime and to prevent permanent damage. Except in
freezing weather always keep liquid in the pump tank. No
further lubrication of the pump end is necessary including
the seal assembly. If flow does not start within five minutes,
stop motor and determine cause (see Trouble Guide on page
7). Be sure all suction and discharge valves are open when
the pump is running. Operating the pump with a closed valve
in the system can cause pump damage.
MAINTENANCE
The strainer built into the pump should be inspected and
cleaned daily. These strainers are easy to clean. Loosen the
hand knob(s) and remove the strainer cover to expose the
strainer basket. Remove the basket and clean. Inspect the
cover gasket; if damaged, replace. Install the strainer cover,
CAUTION: READ CAREFULLY
The performance of Marlow pumps is based upon
clear, cold, fresh water with suction conditions as shown
on the performance curve. If used to pump other liquids,
pump performance may differ from rated performance
based on the different specific gravity, temperature,
viscosity, etc. of the liquid being pumped. A standard
pump may not be safe for pumping all types of liquids,
such as toxic, volatile or chemical liquids, or liquids under
extreme temperatures or pressures. Please consult
Marlow catalogs as well as local codes and general
references to determine the appropriate pumps for your
particular application. Since it is impossible for us to
anticipate every application of a Marlow pump, if you
plan to use the pump for a non-water application, consult
Marlow beforehand to determine whether such application
may be proper or safe under the circumstances. Failure to
do so could result in property damage or personal injury.
TULATIONS