Xylem IM009 R02 Model 3657/3757 - Manual (Page 3)

3
DANGER
WARNING
CAUTION
WARNING
Hazardous voltage
can shock, burn or
cause death.
SAFETY INSTRUCTIONS
TO AVOID SERIOUS OR FATAL PERSONAL
INJURY OR MAJOR PROPERTY DAMAGE, READ
AND FOLLOW ALL SAFETY INSTRUCTIONS IN
THE MANUAL AND ON THE PUMP.
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 per-
sonal injury or property damage.
Warns of hazards that WILL cause
serious personal injury, death or major
property damage.
Warns of hazards that CAN cause serious
personal injury, death or major property
damage.
Warns of hazards that CAN cause per-
sonal injury or property damage.
NOTICE: INDICATES SPECIAL INSTRUCTIONS
WHICH ARE VERY IMPORTANT AND MUST BE
FOLLOWED.
THIS MANUAL IS INTENDED TO ASSIST IN
THE INSTALLATION AND OPERATION OF
THIS UNIT. THOROUGHLY REVIEW ALL
INSTRUCTIONS AND WARNINGS PRIOR TO
PERFORMING ANY WORK ON THIS PUMP.
MAINTAIN ALL SAFETY DECALS.
Install, ground and wire accord-
ing to local and National Electri-
cal Code Requirements.
Install an all leg disconnect
switch near the pump.
Disconnect and lockout electrical
power before installing or servic-
ing the pump.
Electrical supply must match motor’s
nameplate specifications. Incorrect
voltage can cause fire, damage motor
and void the warranty.
Single phase pump motors are equipped with an au-
tomatic thermal protector, which opens the motor’s
electrical circuit when an overload condition exists.
This can cause the pump to start unexpectedly.
DESCRIPTION and SPECIFICATIONS
The Models 3657 (close-coupled) and 3757 (frame-
mounted) are single-stage end-suction pumps designed
for ultra-pure water systems, O.E.M. applications, food
and beverage processing and chemical services not de-
manding ANSI standard equipment.
The pumps have fully enclosed, investment cast, AISI
TYPE 316 stainless steel impellers, key driven and held in
position by an o-ring sealed locknut. The full volute cas-
ings are also investment castings of AISI TYPE 316 stain-
less steel, back pull-out configuration, with connections
for mating with standard 150 lb. ANSI flanges. Shafts are
protected with o-ring sealed stainless steel sleeves. Shaft
sealing is with mechanical seal.
Close-coupled units have NEMA frame motors, C-face
mounting, JM shaft extension. Frame mounted units can
be coupled to motors through a spacer coupling, or belt
driven.
1. Important:
1.1. Inspect unit for damage. Report any damage to car-
rier/dealer immediately.
1.2. Electrical supply must be a separate branch circuit
with fuses or circuit breakers, wire sizes, etc. per
National and Local electrical codes. Install an all-leg
disconnect switch near pump,
ALWAYS DISCONNECT ELECTRICAL
POWER WHEN HANDLING PUMP
OR CONTROLS.
1.3. Motors must be wired for proper voltage. Motor
wiring diagram is on motor nameplate. Wire size
must limit maximum voltage drop to 10% of name-
plate voltage at motor terminals, or motor life and
pump performance will be lowered.
1.4. Always use horsepower-rated switches, contactors
and starters.
1.5. Motor Protection:
1.5.1. Single-phase: Thermal protection for single-
phase units is sometimes built in (check nameplate).
If no built-in protection is provided, use a contactor
with a proper overload. Fusing is permissible.
1.5.2. Three-phase: Provide three-leg protection
with properly sized magnetic starter and thermal
overloads.
1.6. Maximum Operating Limit(s):
Liquid Temperature: 212°F (100°C) with standard seal.
250°F (120°C) with optional
high temp. seal.
Pressure: 175 PSI.
Starts per Hour: 20, evenly distributed.
1.7. Regular inspection and maintenance will increase
service life. Base schedule on operating time. Refer
to Section 8.
2. Installation:
2.1. General
2.1.1. Locate pump as near liquid source as possible
(below level of liquid for automatic operation).
2.1.2. Protect from freezing or flooding.
2.1.3. Allow adequate space for servicing and
ventilation.
2.1.4. All piping must be supported independently of
the pump, and must “line-up” naturally.
CAUTION: NEVER DRAW PIPING INTO PLACE BY
FORCING THE PUMP SUCTION AND
DISCHARGE CONNECTIONS.
2.1.5. Avoid unnecessary fittings. Select sizes to keep
friction losses to a minimum.
2.1.6. After the piping is complete, rotate the unit by
hand to check for any binding.
2.2. Close-Coupled Units:
2.2.1. Units may be installed horizontally, inclined or
vertically.
WARNING
Hazardous
voltage