INSTRUCTION MANUAL
P81875
Revision F
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
Series HSC and HSC-S
Base Mounted
Centrifugal Pumps
2
BELL & GOSSETT PUMP
MODEL
NO.
SERIAL
NO.
IDENT.
NO.
G.P.M. FT. HP R.P.M.
P.S.I.
MAX.
WORK
PRESS.
6 x 8 x 12M
HSC-S 12.4 LHR 1234567 K99
1250
125
60 1800
175
PUMP
SERIES
DUTY
POINT
MAXIMUM
WORKING PRESSURE
PUMP
SIZE
SERIAL
NUMBER
MONTH
AND YEAR
DRIVER
HP-60
IMPELLER DIAMETER
12.4"
LEFT HAND
ROTATION
OPERATIONAL LIMITS
Unless special provisions have been made for your pump by
Bell & Gossett, the operational limits for HSC and HSC-S Series
Pumps are as follows:
Maximum Working Pressure,
Listed on pump nameplate.
SEAL OPERATING LIMITS
Standard Self Flushing Mechanical Seals
BUNA-PH Limitations 7-9; Temperature Range -20 to +225°F
EPT-PH Limitations 7-11; Temperature Range -20 to +250°F
For use on closed or open systems which are relatively free of
dirt and/or other abrasive particles.
PUMP IDENTIFICATION
Bell & Gossett pumps are designated by a series of numbers
such as Series HSC and HSC-S. The pump nameplate gives
identification and rating information as identified in Illustration 1.
Permanent records for this pump are kept by the serial number
and it must be used therefore with all correspondence and
spare parts orders.
Illustration 1 – The Rating Plate
DESCRIPTION
The HSC and HSC-S Series centrifugal pumps are frame
mounted pumps which feature – high efficiency, rugged construction, compact design, foot mounted volute, center drop
out coupler, and regreasable bearings. These features, along
with the horizontal split case, make installation, operation, and
service easy to perform.
PUMP APPLICATION
The standard HSC and HSC-S Series centrifugal pump’s
bronze fitted construction make it ideal for service with the
following liquids: unheated domestic and fresh water, boiler
feed water, condensate, hydronic cooling or heating, pressure
boosting, general pumping and benign liquids.
For other applications contact your local B&G representative.
3
SAFETY
INSTRUCTIONS
This safety alert symbol will be used in this manual and on the
pump safety instruction decals to draw attention to safety related
instructions. When used the safety alert symbol means
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
FAILURE TO FOLLOW THE INSTRUCTIONS MAY RESULT IN
A SAFETY HAZARD.
Your HSC and HSC-S Pump should have the following safety
instruction decals displayed. If the decals are missing or illegible contact your local B&G representative for a replacement.
Additional Safety Requirements:
1. Electrical connections to be made by qualified Electrician in
accordance with all national, state and local codes.
2. Motor must have properly sized starter with properly sized
heaters to provide overload and undervoltage protection.
3. If pump, motor or piping are operating at extremely high or
low temperatures, guarding or insulation is required.
4. The maximum working pressure of the pump is listed on
the pump nameplate, do not exceed this pressure.
B. SAFETY INSTRUCTIONS
WARNING
ROTATING COMPONENTS
DISCONNECT AND LOCKOUT
POWER BEFORE SERVICING.
DO NOT OPERATE WITHOUT
ALL GUARDS IN PLACE.
CONSULT INSTALLATION
AND SERVICE INSTRUCTION
SHEET BEFORE OPERATING
OR SERVICING.
FAILURE TO FOLLOW
INSTRUCTIONS COULD
RESULT IN INJURY
OR DEATH.
P70642
WARNING
EYEBOLTS OR LIFTING
LUGS IF PROVIDED ARE
FOR LIFTING ONLY THE
COMPONENTS TO WHICH
THEY ARE ATTACHED.
FAILURE TO FOLLOW
INSTRUCTIONS COULD
RESULT IN INJURY
OR DEATH.
P70643
CAUTION
COUPLER ALIGNMENT IS
REQUIRED! LEVEL AND
GROUT PUMP BEFORE USE!
CHECK ALIGNMENT BEFORE
GROUTING, AFTER SYSTEM
IS FILLED, AFTER SERVICING
PUMP, AND AS REQUIRED.
CONSULT THE SERVICE
INSTRUCTIONS FOR DETAILS.
FAILURE TO FOLLOW THESE
INSTRUCTIONS COULD
RESULT IN INJURY OR
PROPERTY DAMAGE.
P70820
CAUTION
DO NOT RUN PUMP DRY,
SEAL DAMAGE MAY OCCUR.
INSPECT PUMP SEAL
REGULARLY FOR LEAKS,
REPLACE AS REQUIRED.
FOR LUBRICATION
REQUIREMENTS, CONSULT
SERVICE INSTRUCTIONS.
FAILURE TO FOLLOW
INSTRUCTIONS COULD
RESULT IN INJURY OR
PROPERTY DAMAGE.
P70644
Illustration 2 – Safety Instruction Decals
RATING PLATE
BELL & GOSSETT PUMP
MODEL
NO.
SERIAL
NO.
IDENT.
NO.
G.P.M. FT. HP R.P.M.
P.S.I.
MAX.
WORK
PRESS.
6 x 8 x 12M
HSC-S 12.4 LHR 1234567 K99
1250
125
60 1800
175
PUMP LOCATION
Locate the pump so there is sufficient room for inspection, maintenance and service. If the use of a hoist or tackle is needed,
allow ample head room.
If lifting base pump is required, use a nylon string, chain, or
wire rope, hitch around both bearing supports. If lifting of the
entire pump is required, do so with slings placed under the
base rails as shown.
The best pump location for sound and vibration absorption is
on a concrete floor with subsoil underneath. If the pump location is overhead, special precautions should be undertaken to
reduce possible sound transmission. Consult a sound specialist.
If the pump is not on a closed system, it should be placed as
near as possible to the source of the liquid supply, and located
to permit installation with the fewest number of bends or
elbows in the suction pipe.
The installation must be evaluated to determine that the Net
Positive Suction Head Available (NPSHA) meets or exceeds the
Net Positive Suction Head Required (NPSHR), as stated by the
pump performance curve. See page 9 for more details on
proper suction piping installation.
IMPORTANT
Do not install and operate Bell & Gossett Pumps, 3D Valves,
Suction Diffusers, etc., in closed systems unless the system is
constructed with properly sized safety devices and control
devices. Such devices include the use of properly sized and
located pressure relief valves, compression tanks, pressure controls, temperature controls, and flow controls as appropriate. If
the system does not include these devices, consult the responsible engineer or architect before making pumps operational.
4
ADDITIONAL SAFETY REQUIREMENTS:
ELECTRICAL SAFETY:
THERMAL SAFETY:
MECHANICAL SAFETY:
WARNING: Electrical Shock Hazard
Electrical connections to be made by a qualified
electrician in accordance with all applicable codes, ordinances, and good practices. Failure to follow these instructions could result in serious personal injury or death,
or property damage.
WARNING: Electrical Overload Hazard
Three phase motors must have properly sized
heaters to provide overload and undervoltage protection.
Single phase motors have built-in overload protectors.
Failure to follow these instructions could result in serious
personal injury or death, or property damage.
WARNING: Extreme Temperature Hazard
If pump, motor, or piping are operating at extremely
high or low temperatures, guarding or insulation is required. Failure to follow these instructions could result in
serious personal injury or death, or property damage.
WARNING: Unexpected Startup Hazard
Disconnect and lockout power before servicing.
Failure to follow these instructions could result in serious
personal injury or death, or property damage.
WARNING: Excessive System Pressure Hazard
The maximum working pressure of the pump is listed
on the nameplate, do not exceed this pressure. Do not use
air to hydrotest pump. Failure to follow these instructions
could result in serious personal injury or death, or property
damage.
WARNING: Excessive Pressure Hazard
Volumetric Expansion
The heating of water and other fluids causes volumetric
expansion. The associated forces may cause failure of system components and release of high temperature fluids.
This will be prevented by installing properly sized and
located compression tanks and pressure relief valves.
Failure to follow these instructions could result in serious
personal injury or death, or property damage.
COMPRESSION TANK
SHOULD BE LOCATED
ON THE SUCTION SIDE
OF THE PUMP
B&G REDUCING
VALVE
COLD
WATER
SUPPLY
FROM BOILER
CHILLER OR CONVERTER
B&G ROLAIRTROL
AIR SEPARATOR
SUPPLY
TO SYSTEM
ISOLATION
VALVE
B&G CIRCUIT
SETTER
B&G TRIPLE DUTY
VALVE
WARNING: Falling Objects Hazard
Eyebolts or lifting lugs, if provided, are for lifting only
the components to which they are attached. Failure to follow these instructions could result in serious personal
injury or death, or property damage.
Illustration 3
NYLON SLING,
CHAIN OR
WIRE ROPE
CHOKER
HITCH
AROUND
BEARING
FRAME
5
INTRODUCTION
1. Purpose of Manual
This manual is furnished to acquaint you with some of the
practical ways to install, operate, and maintain this pump.
Read it completely before doing any work on your unit and
keep it handy for future reference.
Equipment cannot operate well without proper care. To keep
this unit at top efficiency, follow the recommended installation
and servicing procedures outlined in this manual.
2. Warranty
Refer to your local representative for warranty coverage.
3. Pump Identification
All pumps are designated by Serial Number, Model Number,
and Size. This information is stamped on an identification
plate which is mounted on the pump. Refer to pump identification in specific instruction section of this manual for detailed
information.
4. Installation
5. Receiving Pump
Check pump for shortages and damage immediately upon
arrival. (An absolute must.) Prompt reporting to the carrier’s
agent with notations made on the freight bill, will expedite
satisfactory adjustment by the carrier.
Pumps and drivers normally are shipped from the factory
mounted and painted with primer and one finish coat.
Couplings may be either completely assembled or have the
coupling hubs mounted on the shafts and the connecting
members removed. When the connecting members are
removed, they will be packaged in a separate container and
shipped with the pump or attached to the base plate.
Shafts are in alignment when the unit is shipped; however, due
to shipping, the pumps may arrive misaligned and, therefore,
alignment must be established during installation. Bell &
Gossett has determined that proper and correct alignment can
only be made by accepted erection practices. Refer to the following paragraphs on “Foundation,” “Base Plate Setting,”
“Grouting Procedure,” “Alignment Procedure” and “Doweling.”
6. Temporary Storage
If the pump is not to be installed and operated soon after
arrival, store it in a clean, dry place having slow, moderate
changes in ambient temperature. Rotate the shaft periodically
to coat the bearings with lubricant and to retard oxidation,
corrosion, and to reduce the possibility of false brinelling of
the bearings.
7. Location
The pump should be installed as near the suction supply as
possible, but no less than five suction diameters (refer to page
9, suction and discharge piping section) with the shortest and
most direct suction pipe practical. The total dynamic suction
lift (static lift plus friction losses in suction line) should not
exceed the limits for which the pump was sold.
The pump must be primed before starting. Whenever possible,
the pump should be located below the fluid level to facilitate
priming and assure a steady flow of liquid. This condition provides a positive suction head on the pump. It is also possible
to prime the pump by pressurizing the suction vessel.
When installing the pump, consider its location in relation to
the system to assure that sufficient Net Positive Suction Head
(NPSH) at pump suction is provided. Available NPSH must
always equal or exceed the required NPSH of the pump.
The pump should be installed with sufficient accessibility for
inspection and maintenance. A clear space with ample head
room should be allowed for the use of an overhead crane or
hoist sufficiently strong to lift the unit.
NOTE: Allow sufficient space to be able to dismantle pump
without disturbing the pump inlet and discharge piping.
Select a dry place above the floor level wherever possible.
Take care to prevent pump from freezing during cold weather
when not in operation. Should the possibility of freezing exist
during a shut-down period, the pump should be completely
drained, and all passages and pockets where liquid might collect should be blown out with compressed air.
Make sure there is a suitable power source available for the
pump driver. If motor driven, electrical characteristics should
be identical to those shown on motor data plate.
8. Foundation
A substantial foundation and footing should be built to suit
local conditions. It should form a rigid support to maintain
alignment.
The foundation should be poured without interruption to within
1
/2 to 11/2 inches of the finished height. The top surface of the
foundation should be well scored and grooved before the
concrete sets; this provides a bonding surface for the grout.
General HSC and HSC-S Instructions
6
Foundation bolts should be set in concrete as shown in
Illustration 4. An optional 4-inch long tube around the bolts at
the top of the concrete will allow some flexibility in bolt alignment to match the holes in the base plate. Allow enough bolt
length for grout, shims, lower base plate flange, nuts and
washers. The foundation should be allowed to cure for several
days before the base plate is shimmed and grouted.
9. Base Plate Setting (Before Piping)
NOTE: This procedure assumes that a concrete foundation
has been prepared with anchor or hold down bolts extending
up ready to receive unit. It must be understood that pump and
motor have been mounted and rough aligned at the factory. If
motor is to be field mounted, consult factory for recommendations. Bell & Gossett cannot assume responsibility for final
alignment.
a. Use blocks and shims under base for support at anchor
bolts and midway between bolts, to position base
approximately 1" above the concrete foundation, with studs
extending through holes in the base plate.
b. By adding or removing shims under the base, level and
plumb the pump shaft and flanges. The base plate does not
have to be level.
c. Draw anchor nuts tight against base, and observe pump
and motor shafts or coupling hubs for alignment. (Temporarily remove coupling guard for checking alignment.)
d. If alignment needs improvement, add shims or wedges at
appropriate positions under base, so that retightening of
anchor nuts will shift shafts into closer alignment. Repeat
this procedure until a reasonable alignment is reached.
NOTE: Reasonable alignment is defined as that which is
mutually agree upon by pump contractor and the accepting
facility (final operator). Final alignment procedures are covered under “Alignment Procedures.”
e. Check to make sure the piping can be aligned to the pump
flanges without placing pipe strain on either flange.
f. Grout in base plate completely (See “Grouting Procedure”)
and allow grout to dry thoroughly before attaching piping to
pump. (24 hours is sufficient time with approved grouting
procedure.)
10. Grouting Procedure
Grout compensates for uneven foundation, distributes weight
of unit, and prevents shifting. Use an approved, non-shrinking
grout, after setting and leveling unit (See Illustration 5).
a. Build strong form around the foundation to contain grout.
b. Soak top of concrete foundation thoroughly, then remove
surface water.
c. Base plate should be completely filled with grout.
d. After the grout has thoroughly hardened, check the founda-
tion bolts and tighten if necessary.
e. Check the alignment after the foundation bolts are
tightened.
f. Approximately 14 days after the grout has been poured or
when the grout has thoroughly dried, apply an oil base paint
to the exposed edges of the grout to prevent air and moisture from coming in contact with the grout.
11. See ANSI/OSHA Coupler Guard Removal/Installation
(next page)
12. Alignment Procedure
NOTE: A flexible coupling will only compensate for small
amounts of misalignment. Permissible misalignment will vary
with the make of coupling. Consult coupling manufacturer’s
data when in doubt.
Allowances are to be made for thermal expansion during cold
alignment, so that the coupling will be aligned at operating
temperature. In all cases, a coupling must be in alignment for
continuous operation. Even though the coupling may be lubricated, misalignment causes excessive wear, vibration, and
bearing loads that result in premature bearing failure and
ultimate seizing of the pump. Misalignment can be angular,
parallel, or a combination of these, and in the horizontal and
vertical planes. Final alignment should be made by moving
and shimming the motor on the base plate, until the coupling
hubs are within the recommended tolerances measured in
total run-out. All measurements should be taken with the
pump and motor foot bolts tightened. The shaft of sleeve
bearing motors should be in the center of its mechanical float.
NOTE: Proper alignment is essential for correct pump operation. This should be performed after base plate has been
properly set and grout has dried thoroughly according to
instructions. Final alignment should be made by shimming
driver only. Alignment should be made at operating
temperatures.
Illustration 4 – Foundation
Illustration 5 – Setting Base Plate and Grouting
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before servicing.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
PIPE
SLEEVE
FOUNDATION
BOLT
BUILT-UP
CONCRETE FOUNDATION
GROUT ONLY TO
TOP OF BASE RAIL.
PUMP
BASE RAIL
APPROX.
1" GAP
CONCRETE
FOUNDATION
LEVELING OF PUMP BASE
ON CONCRETE FOUNDATION.
GROUT
WASHER
ALLOW 1" FOR SHIMS.
PLACE ON BOTH SIDES
OF ANCHOR BOLTS.
NOTE:
TO KEEP SHIMS IN
PLACE ALLOW GROUT
TO FLOW AROUND
HOLD DOWN LUGS.
(OPTIONAL)
7
11. ANSI/OSHA COUPLER GUARD
REMOVAL/INSTALLATION
NOTE: Do not spread the inner and outer guards more than
necessary for guard removal or installation. Over spreading the
guards may alter their fit and appearance.
Removal
a. Remove the two capscrews that hold the outer (motor side)
coupler guard to the support bracket(s).
b. Spread the outer guard and pull it off the inner guard.
c. Remove the capscrew that holds the inner guard to the
support bracket.
d. Spread the inner guard and pull it over the coupler.
Installation
a. Check coupler alignment before proceeding. Correct if
necessary.
b. Spread the inner guard and place it over the coupler.
c. With the inner guard straddling the support bracket, install a
capscrew through the hole (or slot) in the support bracket
and guard located closest to the pump. Do not tighten the
capscrew.
d. Spread the outer guard and place it over the inner guard.
e. Install the outer guard capscrews by following the step
stated below which pertains to your particular pump:
i. For pumps with a motor saddle support bracket: Ensure
the outer guard is straddling the support arm, and install
but do not tighten the two remaining capscrews.
ii. For pumps without a motor saddle support bracket:
Insert the spacer washer between the holes located
closest to the motor in the outer guard, and install, but
do not tighten, the two remaining capscrews.
f. Position the outer guard so it is centered around the shaft,
and so there is less than a 1/4" of the motor shaft exposed.
On guards that utilize a slotted support bracket, the inner
guard will have to be positioned so there is only a 1/4" of
the pump shaft exposed.
g. Holding the guard in this position, tighten the three
capscrews.
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before servicing.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
INNER GUARD
ATTACH SUPPORT BRACKET
TO BEARING HOUSING
THIS OPTION USED IN PLACE OF SPACER WHERE
OVERALL LENGTH OF GUARD EXCEEDS 12 INCHES
OR GUARD WIDTH IS OVER 10 INCHES ACROSS
THE FLATS.
OUTER GUARD
NUT
LOCKWASHER
LOCATE SUPPORT ARM
BETWEEN OUTER GUARD ENDS.
ALIGN THE ARM WITH HOLES IN
THE OUTER GUARD AND HOLES IN
THE SADDLE BRACKET.
BRACKET SUPPORT
CAPSCREW
FLAT WASHER
BRACKET SUPPORT
ATTACHES INSIDE HERE
IN LINE WITH BOLT
MOTOR SADDLE BRACKET
ATTACH TO MOTOR SADDLE
SPACER WASHER
SUPPORT BRACKET
ANSI/OSHA Coupling Guard Exploded View
for Typical Series HSC and HSC-S Pump Installation
8
Method 1 – Straight Edge Alignment for Standard Sleeve
Type Coupler with Black Rubber Insert (See Illustration 6A)
Before aligning the coupler, make sure there is at least
1
/8" end
clearance between the sleeve and the two coupler halves.
1. Check angular misalignment using a micrometer or caliper.
Measure from the outside of one flange to the outside of
the opposite flange at four points 90° apart. DO NOT
ROTATE COUPLER. Misalignment up to
1
/64" per inch of
coupler radius is permissible.
2. At four points 90° apart (DO NOT ROTATE COUPLER),
measure the parallel coupler misalignment by laying a
straight edge across one coupler half and measuring the
gap between the straight edge and opposite coupler half.
Up to a
1
/64" gap is permissible.
Method 2 – For Orange Hytrel Inserts, 3500 RPM
Operation, or All Other Coupler Types (See Illustration 6B)
a. Make sure each hub is secured to its respective shaft and
that all connecting and/or spacing elements are removed at
this time.
b. The gap between the coupling hubs is set by the manufac-
turer before the units are shipped. However, this dimension
should be checked. (Refer to the coupling manufacturer’s
specifications supplied with the unit.)
c. Scribe index lines on coupling halves as shown in
Illustration 5B.
d. Mount dial indicator on one hub as shown for parallel align-
ment. Set dial to zero.
e. Turn both coupling halves so that index lines remain
matched. Observe dial reading to see whether driver needs
adjustment (See paragraph i below).
f. Mount dial indicator on one hub as shown for angular align-
ment. Set dial to zero.
g. Turn both coupling halves so that index lines remain
matched. Observe dial reading to see whether driver needs
adjustment (See paragraph i below).
h. Assemble coupling. Tighten all bolts and set screw(s). It
may be necessary to repeat steps c through f for a final
check.
i. For single element couplings, a satisfactory parallel mis-
alignment is .004"T.I.R., while a satisfactory angular misalignment is .004"T.I.R. per inch of radius R (See Figure 5B).
Final Alignment
Final alignment cannot be accomplished until the pump has
been operated initially for a sufficient length of time to attain
operating temperature. When normal operating temperature
has been attained, secure the pump to re-check alignment
and compensate for temperature accordingly. See Alignment
Section.
OPTIONAL Alignment Procedure
If desired, the pump and motor feet can be doweled to the
base after final alignment is complete. This should not be
done until the unit has been run for a sufficient length of time
and alignment is within the tolerance. See Doweling Section.
NOTE: Pump may have been doweled to base at factory.
Illustration 6A – Checking Alignment (Method 1)
Illustration 6B – Checking Alignment (Method 2)
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
STRAIGHT EDGE
FEELER GAGE
ANGULAR ALIGNMENT PARALLEL ALIGNMENT
INCORRECT ALIGNMENT
STRAIGHT EDGE
FEELER GAGE
CORRECT ALIGNMENT
PARALLEL
ALIGNMENT
ANGULAR
ALIGNMENT
DIAL
INDICATOR
INDEX LINE
R
RESILIENT
SEPARATOR
DIAL
INDICATOR
9
13. DOWELING
Dowel the pump and driving unit as follows:
a. Drill holes through diagonally opposite feet and into the
base. Holes must be of a diameter
1
/64 inch less than the
diameter of the dowel pins. Clean out the chips.
b. Ream the holes in feet and base to the proper diameter for
the pins (light push fit). Clean out the chips.
c. Insert pins to be approximately flush with feet.
14. SUCTION AND DISCHARGE PIPING
General
When installing the pump piping, be sure to observe the following precautions:
Piping should always be run to the pump.
Do not move pump to pipe. This could make final alignment
impossible.
Both the suction and discharge piping should be supported
independently near the pump and properly aligned, so that no
strain is transmitted to the pump when the flange bolts are
tightened. Use pipe hangers or other supports at necessary
intervals to provide support. When expansion joints are used
in the piping system, they must be installed beyond the piping
supports closest to the pump. Tie bolts should be used with
expansion joints to prevent pipe strain. Do not install expansion joints next to the pump or in any way that would cause a
strain on the pump resulting from system pressure changes. It
is usually advisable to increase the size of both suction and
discharge pipes at the pump connections to decrease the loss
of head from friction.
Install piping as straight as possible, avoiding unnecessary
bends. Where necessary, use 45-degree or long sweep
90-degree fitting to decrease friction losses.
Make sure that all piping joints are air-tight.
Where flanged joints are used, assure that inside diameters
match properly.
Remove burrs and sharp edges when making up joints.
Do not “spring” piping when making any connections.
Provide for pipe expansion when hot fluids are to be pumped.
Suction Piping
When installing the suction piping, observe the following
precautions (See Illustration 7).
The sizing and installation of the suction piping is extremely
important. It must be selected and installed so that pressure
losses are minimized and sufficient liquid will flow into the
pump when started and operated. Many NPSH (Net Positive
Suction Head) problems can be attributed directly to improper
suction piping systems.
Friction losses caused by undersized suction piping can
increase the fluid’s velocity into the pump. As recommended
by the Hydraulic Institute Standard ANSI/HI 1.1-1.5-1994, suction pipe velocity should not exceed the velocity in the pump
suction nozzle. In some situations pipe velocity may need to
be further reduced to satisfy pump NPSH requirements and to
control suction line losses. Pipe friction can be reduced by
using pipes that are one to two sizes larger than the pump
suction nozzle in order to maintain pipe velocities less than
5 feet/second.
Illustration 7 – Suction Pipe Installations
(Piping Supports Not Shown)
CHECK VALVE
GATE VALVE
INCREASER
CORRECT
C OF PIPE
SUCTION PIPE INSTALLED WITH
A GRADUAL RISE TO PUMP
L
LEVEL
AIR POCKET
INCORRECT
AIR POCKET
INCORRECT
AIR POCKET
INCORRECT
GRADUAL RISE
TO PUMP
NO AIR
POCKETS
CORRECT
NO AIR
POCKETS
GRADUAL RISE
TO PUMP
ECCENTRIC
REDUCER
CORRECT
DISTANCE PLUS
ECCENTRIC REDUCER
STRAIGHTENS FLOW
CORRECT
PATH OF
WATER
INCORRECT
10
Suction piping should be short in length, as direct as possible,
and never smaller in diameter than the pump suction opening.
If the suction pipe is short, the pipe diameter can be the same
size as the suction opening. If longer suction pipe is required,
pipes should be one or two sizes lar
ger than the opening
depending on piping length.
Suction piping for horizontal double suction pumps should not
be installed with an elbow close to the suction flange of the
pump except when the suction elbow is in the vertical plane.
A suction pipe of the same size as the suction nozzle
approaching at any angle other than straight up or straight
down must have the elbow located 10 pipe diameters from the
suction flange of the pump. Vertical mounted pumps and other
space limitations require special piping.
There is always an uneven turbulent flow around an elbow and
when it is in a position other than the vertical it causes more
liquid to enter one side of the impeller than the other (See
Illustration 8). This results in high unequalized thrust loads that
will overheat the bearings and cause rapid wear in addition to
affecting hydraulic performance.
When operating on a suction lift, the suction pipe should slope
upward to the pump nozzle. A horizontal suction line must
have a gradual rise to the pump. Any high point in the pipe will
become filled with air and thus prevent proper operation on
the pump. When reducing the piping to the suction opening
diameter use an eccentric reducer with the eccentric side
down to avoid air pockets.
NOTE: When operating on suction lift never use a straight
taper reducer in a horizontal suction line, as it tends to form an
air pocket in the top of the reducer and the pipe.
To facilitate cleaning pump liquid passage without dismantling
pump, a short section of pipe (Dutchman or spool piece) so
designed that it can be readily dropped out of the line can be
installed adjacent to the suction flange. With this arrangement,
any matter clogging the impeller is accessible by removing the
nozzle (or pipe section).
Valves in Suction Piping
When installing valves in the suction piping, observe the following precautions:
a. If the pump is operating under static suction lift conditions,
a foot valve may be installed in the suction line to avoid the
necessity of priming each time the pump is started. This
valve should be of the flapper type, rather than the multiple
spring type, sized to avoid excessive friction in the suction
line. (Under all other conditions, a check valve, if used,
should be installed in the discharge line.) (See “Valves in
Discharge Piping” below)
b. When foot valves are used, or where there are other possi-
bilities of “water hammer,” close the discharge valve slowly
before shutting down the pump.
c. Where two or more pumps are connected to the same
suction line, install gate valves so that any pump can be
isolated from the line. Gate valves should be installed on
the suction side of all pumps with a positive pressure for
maintenance purposes. Install gate valves with stems horizontal to avoid air pockets. Globe valves should not be
used, particularly where NPSH is critical.
d. The pump must never be throttled by the use of a valve on
the suction side of the pump. Suction valves should be
used only to isolate the pump or maintenance purposes,
and should always be installed in positions to avoid air
pockets.
e. A pump drain valve should be installed in the suction piping
between the isolation valve and the pump.
Discharge Piping
If the discharge piping is short, the pipe diameter can be the
same as the discharge opening. If the piping is long, pipe
diameter should be one or two sizes larger than the discharge
opening. On long horizontal runs, it is desirable to maintain as
even a grade as possible. Avoid high spots, such as loops,
which will collect air and throttle the system or lead to erratic
pumping.
Valves in Discharge Piping
A triple duty valve should be installed in the discharge. The
triple duty valve placed on the pump protects the pump from
excessive back pressure, and prevents liquid from running
back through the pump in case of power failure.
Pressure Gauges
Properly sized pressure gauges should be installed in both the
suction and discharge nozzles in the gauge taps (which are
provided on request). The gauges will enable the operator to
easily observe the operation of the pump, and also determine
if the pump is operating in conformance with the performance
curve., If cavitation, vapor binding, or other unstable operation
should occur, widely fluctuating discharge pressure will be
noted.
Pump Insulation
On chilled water applications most pumps are insulated. As
part of this practice, the pump bearing housings should not
be
insulated since this would tend to “trap” heat inside the housing. This could lead to increased bearing temperatures and
premature bearing failures.
Illustration 8 – Unbalanced loading of a double suction impeller
due to uneven flow around on elbow adjacent to the pump.
WATER PRESSURE
INCREASES HERE CAUSING
A GREATER FLOW TO ONE
SIDE OF THE IMPELLER
SUCTION
ELBOW
PUMP CASING
PUMP SUCTION
FLANGE
CASING RINGS
IMPELLER
11
16. Mechanical Seals
Mechanical seals are preferred over packing on some applications because of better sealing qualities and longer serviceability
. Leakage is eliminated when a seal is properly installed,
and normal life is much greater than that of packing on similar
applications.
Single Mechanical Seal
Pumps containing single mechanical seals normally utilize
the pumped liquid to lubricate the seal faces. This method is
preferred when the pumped liquid is neither abrasive nor
corrosive.
B. OPERATION
1. Pre-start Checks
Before initial start of the pump, make the following
inspections:
a. Check alignment between pump and motor.
b. Check all connections to motor and starting device with
wiring diagram. Check voltage, phase, and frequency on
motor nameplate with line circuit.
c. Check suction and discharge piping and pressure gauges
for proper operation.
d. Check impeller adjustment, see specific section for proper
adjustment.
e. Turn rotating element by hand to assure that it rotates
freely.
f. Check driver lubrication.
g. Assure that pump bearings are properly lubricated.
h. Assure that coupling is properly lubricated, if required.
i. Assure that pump is full of liquid (See 2. Priming) and all
valves are properly set and operational, with the discharge
valve closed, and the suction valve open.
j. Check rotation. Be sure that the drive operates in the direc-
tion indicated by the arrow on the pump casing as serious
damage can result if the pump is operated with incorrect
rotation. Check rotation each time the motor leads have
been disconnected.
2. Priming
If the pump is installed with a positive head on the suction, it
can be primed by opening the suction and vent valve and
allowing the liquid to enter the casing.
If the pump is installed with a suction lift, priming must be
done by other methods such as foot valves, ejectors, or by
manually filling the casing and suction line.
3. Starting
a. Close drain valves and valve in discharge line.
b. Open fully all valves in the suction line.
c. Prime the pump.
NOTE: If the pump does not prime properly, or loses prime
during start-up, it should be shutdown and the condition
corrected before the procedure is repeated.
d. When the pump is operating at full speed, open the dis-
charge valve slowly. This should be done promptly after
start-up to prevent damage to pump by operating at zero
flow.
4. Operating Checks
a. Check the pump and piping to assure that there are no
leaks.
b. Check and record pressure gauge readings for future
reference.
c. Check and record voltage, amperage per phase, and kw if
an indicating wattmeter is available.
d. Check bearings for lubrication and temperature. Normal
temperature is 180° maximum.
e. Make all pump output adjustments with the discharge line.
5. Freezing Protection
Pumps that are shut down during freezing conditions should
be protected by one of the following methods.
a. Drain the pump; remove all liquids from the casing.
b. Keep fluid moving in the pump and insulate or heat the
pump to prevent freezing.
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
CAUTION: Cavitation Damage Hazard
Do not throttle the suction line to adjust the pump
output. Failure to follow these instructions could result in
property damage and/or moderate personal injury.
CAUTION: Bearing/Seal Damage Hazard
Do not let heated pump temperature rise above
150°F. Failure to follow these instructions could result in
property damage and/or moderate personal injury.
CAUTION: Seal Damage Hazard
Do not run pump dry, seal damage may occur.
Failure to follow these instructions could result in property
damage and/or moderate personal injury.
12
CHANGING ROTATION
Series HSC and HSC-S centrifugal pumps can be operated
left hand or right hand when viewed from the pump end of the
pump. If you wish to reverse the suction and discharge
nozzles, this can be accomplished with the same pump as
follows:
IMPORTANT: Refer to the disassembly and assembly procedures section of this manual for proper disassembly and
assembly techniques:
1. Remove the impeller from the shaft, turn it 180° and replace
it on the shaft. (NOTE: Impeller can only come off from the
outboard end.)
2.With the rotating element out of the casing, remove the
casing from the bedplate and turn 180°.
3. Set the rotating element back in the casing and reassemble
the pump.
NOTE: The impeller and casing are in the same relationship
to each other as they were originally. The shaft and motor
are also in the same relationship to each other as they were
originally.
4. Reassemble pump and realign the coupling as called for in
the alignment instructions.
5. The rotation of the motor must be changed by switching the
motor leads.
NOTE: Unless the motor rotation is reversed, the impeller
will run backward.
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
ROTATION ROTATION
DISCHARGE DISCHARGE
SUCTION
LEFTHAND ROTATION VIEWED
FROM THE PUMP END
RIGHTHAND ROTATION VIEWED
FROM THE PUMP END
Illustration 9 – Correct Relationship of Impeller and Casing
13
5
1
9
15
7
3
11
16
8
4
12
14
6
2
10
Illustration 10 – Main Joint Bolts
13
C. TROUBLE SHOOTING
Between regular maintenance inspections, be alert for signs of
motor or pump trouble. Common symptoms are listed below.
Correct any trouble immediately and AVOID COSTLY REPAIR
AND SHUTDOWN.
No Liquid Delivered
CAUSES CURES
1. Lack of prime. Fill pump and suction pipe completely with liquid.
2. Loss of prime. Check for leaks in suction pipe joints and fittings; vent casing to remove
accumulated air.
3. Suction lift too high. If no obstruction at inlet, check for pipe friction losses. However, static
lift may be too great. Measure with mercury column or vacuum gauge
while pump operates. If static lift is too high, liquid to be pumped must
be raised or pump lowered.
4. Discharge head too high. Check pipe friction losses. Large piping may correct condition. Check
that valves are wide open.
5. Speed too low. Check whether motor is directly across-the-line and receiving full voltage. Or frequency may be too low; motor may have an open phase.
6. Wrong direction of rotation. Check motor rotation with directional arrow on pump casing.
7. Impeller completely plugged. Dismantle pump and clean impeller.
Not Enough Liquid Delivered
8. Air leaks in suction piping. If liquid pumped is water or other non-explosive, and explosive gas or
dust is not present, test flanges for leakage with flame or match, or by
plugging inlet and putting line under pressure. A gauge will indicate a
leak with a drop of pressure.
9. Speed too low. See item 5.
10. Discharge head too high. See item 4.
11. Suction lift too high. See item 3.
12. Impeller partially plugged. See item 7.
13. Cavitation; insufficient NPSH a. Increase positive suction head on pump by lowering pump.
(depending on installation)
b. Sub-cool suction piping at inlet to lower entering liquid temperature.
c. Pressurization suction vessel.
14. Defective impeller. Inspect impeller, bearings and shaft. Replace if damaged or vane sec-
tions badly eroded.
15. Foot valve too small or partially Area through ports of valve should be at least as large as area of suction
obstructed. pipe – preferably 1
1
/2 times. If strainer is used, net clear area should be
3 to 4 times area of suction pipe.
16. Suction inlet not immersed If inlet cannot be lowered, or if eddies through which air is sucked perdeep enough. sist when it is lowered, chain a board to suction pipe. It will be drawn
into eddies, smothering the vortex.
17. Wrong direction of rotation. Symptoms are an overloaded drive and about
1
/3 rated capacity from
pump. Compare rotation of motor with directional arrow on pump casing.
18. Too small impeller diameter. Check with factory to see if a larger impeller can be used; otherwise, cut
(Probable cause if none of above.) pipe losses or increase speed – or both, as needed. But be careful not
to seriously overload drive.
19. Speed too low. See item 5.
20. Air leaks in suction piping. See item 8.
14
Not Enough Pressure
CAUSES CURES
21. Mechanical defects. See item 14 and 15.
22. Obstruction in liquid passages. Dismantle pump and inspect passages of impeller and casing. Remove
obstruction.
23. Air or gases in liquid. (Test in May be possible to over rate pump to point where it will provide
laboratory, reducing pressure on adequate pressure despite condition. Better to provide gas separation
liquid to pressure in suction line. chamber on suction line near pump, and periodically exhaust accumuWatch for bubble formation.) lated gas. See item 13.
24. Too small impeller diameter. See item 18.
(Probable cause if none above.)
Pump Operates For Short Time, Then Stops
25. Incomplete priming. Free pump, piping and valves of all air. If high points in suction line prevent this, they need correcting. See page 19.
26. Suction lift too high. See item 3.
27. Air leaks in suction piping. See item 8.
28. Air or gases in liquid. See item 23.
Pump Takes Too Much Power
29. Head lower than rating; thereby Machine impeller’s OD to size advised by factory.
pumping too much liquid.
30. Cavitation See item 13.
31. Mechanical defects. See items 14 and 15.
32. Suction inlet not immersed See item 16.
enough.
33. Liquid heavier (in either Use larger driver. Consult factory for recommended size. Test liquid for
viscosity or specific gravity) viscosity and specific gravity.
than allowed for.
34. Wrong direction of rotation. See item 6.
35. Casing distorted by excessive Check alignment. Examine pump for friction between impeller and
strains from suction or casing. Replace damaged parts.
discharge piping.
36. Shaft bent due to damage – Check deflection of rotor by turning on bearing journals. Total indicator
through shipment, operation, run-out should not exceed 0.002 on shaft and 0.004 inch on impeller
or overhaul. wearing surface.
37. Mechanical failure of critical Check bearings and impeller for damage. Any irregularity in these parts
pump parts. will cause a drag on shaft.
38. Misalignment. Realign pump and driver.
39. Speed may be too high Check voltage on motor.
(brake hp of pump varies as the
cube of the speed; therefore,
any increase in speed means
considerable increase in
power demand).
40. Electrical defects. The voltage and frequency of the electrical current may be lower than
that for which the motor was built; or there may be defects in motor. The
motor may not be ventilated properly due to a poor location.
41. Mechanical defects in turbine, If trouble cannot be located, consult factory.
engine or other type of drive
exclusive of motor.
15
MAINTENANCE
1. General Maintenance
Operating conditions vary so widely that to recommend one
schedule of pr
eventative maintenance for all centrifugal
pumps is not possible. Yet some sort of r
egular inspection
must be planned and followed. We suggest a permanent
record be kept of the periodic inspections and maintenance
performed on your pump. This recognition of maintenance
procedure will keep your pump in good working condition, and
prevent costly breakdown.
One of the best rules to follow in the proper maintenance of
your centrifugal pump is to keep a record of actual operating
hours. Then, after a predetermined period of operation has
elapsed, the pump should be given a thorough inspection. The
length of this operating period will vary with different applications, and can only be determined from experience. New
equipment, however, should be examined after a relatively
short period of operation. The next inspection period can be
lengthened somewhat. This system can be followed until a
maximum period of operation is reached which should be considered the operating schedule between inspections.
2. Maintenance of Pump Due to Flood Damage
The servicing of centrifugal pumps after a flooded condition is
a comparatively simple matter under normal conditions.
Bearings are a primary concern on pumping units. First, dismantle the bearings; clean and inspect them for any rusted or
badly worn surfaces. If bearings are free from rust and wear,
reassemble and relubricate them with one of the recommended pump lubricants. Depending on the length of time the
pump has remained in the flooded area, it is unlikely that bearing replacement is necessary; however, in the event that rust
or worn surfaces appear, it may be necessary to replace the
bearings.
Next, inspect the stuffing box, and clean out any foreign matter that might clog the box. Mechanical seals should be
cleaned and thoroughly flushed.
Couplings should be dismantled and thoroughly cleaned.
Any pump that is properly sealed at all joints and connected to
both the suction and discharge should exclude outside liquid.
Therefore, it should not be necessary to go beyond the bearings, stuffing box, and coupling when servicing the pump.
3. Bearing Lubrication – Grease
Grease lubricated ball bearings are packed with grease at the
factory and ordinarily will require no attention before starting,
provided the pump has been stored in a clean, dry place prior
to its first operation. The bearings should be watched the first
hour or so after the pump has been started to see that they
are operating properly.
The importance of proper lubrication cannot be over emphasized. It is difficult to say how often a bearing should be
greased, since that depends on the conditions of operation. It
is well to add one ounce of grease at regular intervals, but it is
equally important to avoid adding too much grease. For average operating conditions, it is recommended that 1 oz. of
grease be added at intervals of three to six months, and only
clean grease be used. It is always best if unit can be stopped
while grease is added to avoid overloading.
NOTE: Excess grease is the most common cause of
overheating.
A lithium based NLGI-2 grade grease should be used for lubricating bearings where the ambient temperature is above
-20°F. Grease lubricated bearings are packed at the factory
with Shell Alvania No 2. Other recommended greases are
Texaco Multifak No. 2 and Mobilux No. 2 grease.
Greases made from animal or vegetable oils are not recommended due to the danger of deterioration and forming of
acid. Do not use graphite. Use of an ISO VG 100 mineral base
oil with rust and oxidation inhabitors is recommended.
The maximum desirable operating temperature for ball bearings is 180°F. Should the temperature of the bearing frame rise
above 180°F, the pump should be shut down to determine the
cause.
4. Mechanical Seals
a. Mechanical seals are precision products and should be
treated with care. Use special care when handling seals.
Clean parts are essential to prevent scratching the finely
lapped sealing faces. Even light scratches on these faces
could result in leaky seals.
b. Normally, mechanical seals require no adjustment or
maintenance, except routine replacement of worn, or
broken parts.
16
5. Packing Seal
When a pump with packing is first started it is advisable to
have the packing slightly loose without causing an air leak. As
the pump runs in, gradually tighten the gland bolts evenly. The
gland should never be drawn to the point where packing is
compr
essed too tightly and no leakage occurs. This will cause
the packing to burn, score the shaft sleeve and prevent liquid
from circulating through the stuffing box cooling the package.
NOTE: Eccentric run-out of the shaft or sleeve through the
packing could result in excessive leakage that cannot be compensated for. Correction of this defect requires shaft and/or
sleeve replacement. Packing should be checked frequently
and replaced as service indicates. Six months might be a reasonable expected life, depending on the operating conditions.
6. Cleaning Without Dismantling Pump
A short section of pipe so designed that it can be readily
dropped out of the line can be installed adjacent to the suction
flange. With this arrangement, any matter clogging the
impeller is accessible by removing the pipe section.
If the pump cannot be freed of clogging after the above
methods have been tried, dismantle the unit as previously
described to locate the trouble.
III. Series HSC & HSC-S Pump
A. DISASSEMBLY AND ASSEMBLY PROCEDURE
The procedures outlined in this section cover the dismantling
and reassembly of the Series HSC pump construction.
A. Series HSC pump with mechanical seals on the shaft.
B. Series HSC pump with mechanical seals on shaft
sleeves.
C. Series HSC pump with packing.
Each procedure provides the step-by-step requirements for
dismantling and then reassembling the pump, depending
upon the type of seal used. Each procedure is complete within
itself, so that reference to other sections is not required.
When working on the pump, use accepted mechanical practices to avoid unnecessary damage to parts. Check clearances and conditions of parts when pump is dismantled and
replace if necessary. Steps should usually be taken to restore
impeller and casing ring clearance when it exceeds three
times the original clearance.
17
1. Mechanical Seals on Shaft
DISASSEMBLY
NOTICE: Numbers that appear in parenthesis ( ), such as
(1-939-9), may be used to order replacement parts.
1. Close valves on suction and discharge sides of pump. (If
no valves have been installed, it will be necessary to drain
the system.)
CAUTION: Extreme Temperature Hazard
Allow pump temperatures to reach acceptable levels
before proceeding. Open drain valve, do not proceed until
liquid stops coming out of drain valve. If liquid does not
stop flowing from drain valve, isolation valves are not sealing and should be repaired before proceeding. After liquid
stops flowing from drain valve, leave drain valve open and
continue. Remove the drain plug located on the bottom of
the pump housing. Do not reinstall plug or close drain
valve until reassembly is completed. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before servicing.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
Photo 1 – Assembly Section: Pump With Mechanical Seals on Shaft
Photo 2 – Pump with Mechanical Seals
Impeller rings can be added–
Optional Extra.
IMPELLER WEAR RING
Optional Extra.
BALANCED
MECHANICAL SEAL
NOTE:
Standard mechanical seal piping can be modified for filter or
external flushing arrangement.
18
Remove coupler guard (see separate instructions on page
29) and disconnect coupler.
Remove external tubing (1-939-9) if supplied.
2. Loosen but do not remove main joint capscrews (2-904-1
and 2-904-2). Insert a screwdriver or pry bar into the slots
between the upper and lower casing halves – separate
joint.
3. Remove all casing main joint capscrews and dowels
(2-916-1), lift off the upper casing half.
4. Tap the stuffing boxes with a soft-headed hammer to
break the seal between the stuffing box and lower casing
half, and lift the rotating element out of the lower casing.
NOTE: A spare rotating element can be installed at this
point.
5. Remove four capscrews (3-904-9) from each bearing
housing (3-025-3 and 3-025-4) and remove the bearing
housings from the shaft.
6. Remove snap ring (3-915-4) (or locknut and lockwasher
on pumps built after 1991) from the outboard end of the
shaft and, using a puller, remove the bearing (3-026-4)
from the shaft. Remove the drive end bearing in the same
manner.
NOTE: Snap ring is not used on drive end bearings.
IMPORTANT: Do not reuse the ball bearings.
7. Slide stuffing boxes (3-073-9) off of the shaft, working
deflector ring (3-136-9) off the shaft at the same time.
8. Drive oil seal (3-177-9) from the stuffing box.
9. Drive mechanical seal seat (3-401-0) from the stuffing
box.
10. Remove two casing rings (3-003-9) from the impeller
(4-002-0) and remove “O” ring (3-914-9) and locating pin
(3-943-9) from each casing ring.
11. Remove mechanical seal head (3-402-0) from the pump
shaft.
12. Remove the impeller retaining ring (3-915-1) with a retaining ring pliers (Photo 5). Heat the impeller hub on both
ends to 350°F maximum, and pull or push the impeller
from the shaft.
NOTE: For impellers with replaceable rings – remove the rings
(4-004-9) by cutting the rings with a cold chisel.
CAUTION: Excessive Pressure Hazard
Make certain the internal pressure is relieved before
continuing. Failure to follow these instructions could result
in serious personal injury or death and property damage.
Figure 29 – Rotating Element
Photo 3 – Removing Stuff Box
Photo 4 – Removing Casing Rings from Impeller
Photo 5 – Removing Impeller Retaining Ring
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
1
ASSEMBLY
All bearings, “O” rings, seals and gaskets should be replaced
with new parts during assembly. All reusable parts should be
cleaned of all foreign matter before reassembling. The main
casing joint gasket should be made using the upper half as a
template. Lay the gasket material on the casing joint and mark
it by pressing it against the edges of the casing. Trim the gasket so that it is flush with the inside edges of the casing.
1. Assemble Impeller Key (3-911-1) in the shaft key slot.
2. Check the impeller (4-002-0) and casing to determine the
correct relationship (See Figure 33). Heat the impeller
evenly to 300°F maximum to expand the bore.
NOTE: For impellers with replaceable rings, heat each
new ring (4-004-9) and slide it onto the impeller. Hold
rings against the impeller shoulder until they cool.
3. Push the heated impeller on the shaft (3-007-0) against
the shaft shoulder, (impeller may be pressed onto the
shaft if a suitable press is available) (See Figure 12), and
install retaining ring (3-915-1).
4. Lubricate and roll an “O” ring (3-914-2) on each casing
ring (3-003-9) and slide the casing rings onto the impeller.
5. Thoroughly clean the stuffing boxes (3-073-9) to prevent
dirt from entering the seal during startup.
6. Press the stationary seats (3-401-0) of the mechanical
seals into both stuffing boxes. Lightly lubricate the stuffing box bore to ease assembly (See Figure 13).
7. Press a new oil seal (3-177-9) into each stuffing box.
NOTE: Seal lip must point away from the bearing
(3-026-4).
8. Lubricate and roll “O” ring (3-914-1) into the groove in
each stuffing box.
IMPORTAN T: Steps 9 through 14 must be completed
with 10 to 12 minutes to assure proper placement of
mechanical seal.
9. Lightly coat the outboard end of the shaft with soapy
water or vegetable oil and slide the mechanical seal head
(3-402-0) onto the shaft (See Photo 7).
10. Slide each stuffing box onto the shaft so that the shaft
end extends through the mechanical seal area, but
does not enter the oil seal. This will permit installation of
deflector (3-136-9).
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
Photo 8 – Seal Head Installation
Photo 7 – Installing Stationary Seat
Photo 6 – Pressing Impeller on Shaft
Óä
11. Slide the deflector over the shaft end; then push the shaft
end through the oil seal and slide stuffing box fully onto
the shaft. DO NOT COMPRESS THE SEAL SPRING AT
THIS TIME.
12. Heat ball bearing (3-026-4), using either dry heat or a 10
to 15% soluble oil and water solution.
IMPORTANT: Do not exceed 275°F.
13. Using gloves, press the heated bearing onto the shaft
against the shaft shoulder (See Photo 9).
14. Install snap ring (3-915-4) (or locknut and lockwasher) on
the outboard end of the shaft.
15. Cool the bearing to room temperature and coat both
sides with two or three ounces of recommended grease.
16. Coat the inside of the bearing housing (3-025-4) with
grease and slide into place over bearing. Attaching the
bearing housing to the stuffing box with four capscrews
(3-904-9).
17. Repeat steps 9 through 13, 15 and 16, including
IMPORTANT NOTE in step 8, for inboard side of rotating
element.
NOTE: A snap ring is not installed on the inboard end of
the shaft.
18. Set the rotating element in the pump casing. Locate both
stuffing box tongues in their respective casing grooves.
Locate pins (3-943-9) in stuffing box and wear rings in
their respective slots at the casing parting surface.
Correct any excessive “O” ring buckling (See Figure 16).
NOTE: Do not cut or damage “O” rings when lowering the
rotating element into position. When all four pins are correctly located, there will be some casing ring looseness.
19. Install a new
1
/64 inch thick gasket with a light coat of
commercial cup grease on both gasket surfaces.
IMPORTANT: Align the inner edge of the gasket with the
stuffing box “O” rings.
20. Lower the upper half casing (2-001-7) into place and
install casing joint bolts (2-904-1 and -2).
IMPORTANT: When installing upper half casing, assure
that “O” rings are not cut or pinched.
21. Insert tapered casing joint dowels (2-916-1), and drive
them home.
22. Tighten the casing joint bolts to the following torque
values: 140 ft.-lb. minimum for
5
/8"-11 hex head cap-
screws (Grade 5); 350 ft.-lb. minimum for
7
/8"-9 Ferry Cap
Countr-bor screws (Grade 8). The bolt torque pattern is
shown in Illustration 10 on page 12.
23. Rotate the shaft by hand to assure that it turns smoothly
and is free from rubbing or binding.
24. Install coupler and align. Replace coupler guard, see
separate instructions on page 00.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
Photo 11 – Upper Casing Half Removed
Photo 9 – Installing Shaft Bearing
Photo 10 – Rotating Element
2£
2. Mechanical Seals on Shaft Sleeve
DISASSEMBLY
NOTICE: Numbers that appear in parenthesis ( ), such as
(1-939-9), may be used to order replacement parts.
1. Close valves on suction and discharge sides of pump. (If
no valves have been installed, it will be necessary to drain
the system.)
CAUTION: Extreme Temperature Hazard
Allow pump temperatures to reach acceptable levels
before proceeding. Open drain valve, do not proceed until
liquid stops coming out of drain valve. If liquid does not
stop flowing from drain valve, isolation valves are not sealing and should be repaired before proceeding. After liquid
stops flowing from drain valve, leave drain valve open and
continue. Remove the drain plug located on the bottom of
the pump housing. Do not reinstall plug or close drain
valve until reassembly is completed. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before servicing.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
Photo 12 – Assembly Section: Pump With Mechanical Seals on Shaft Sleeves
Photo 13 – Pump with Mechanical Seals
on Shaft Sleeves
Impeller rings can be added–
Optional Extra.
IMPELLER WEAR RING
Optional Extra.
BALANCED
MECHANICAL
SEAL ON SLEEVE
2Ó
Remove coupler guard (see separate instructions on page
29) and disconnect coupler.
Remove external tubing (1-939-9) if supplied.
2. Loosen but do not remove main joint capscrews (2-904-1
and 2-904-2). Insert a screwdriver or pry bar into the slots
between the upper and lower casing halves – separate
joint.
3. Remove all casing main joint capscrews and dowels
(2-916-1), lift off the upper casing half.
4. Tap the stuffing boxes with a soft-headed hammer to
break the seal between the stuffing box and lower casing
half, and lift the rotating element out of the lower casing.
NOTE: A spare rotating element can be installed at this
point (See Photo 14).
5. Remove four capscrews (3-904-9) from each bearing
housing (3-025-3 and 3-025-4) and remove the bearing
housings from the shaft.
6. Remove snap ring (3-915-4) (or locknut and lockwasher
on pumps built after 1991) from the outboard end of the
shaft and, using a puller, remove the bearing (3-026-4)
from the shaft. Remove the drive end bearing in the same
manner.
NOTE: Snap ring is not used on drive end bearing.
IMPORTANT: Do not reuse the ball bearings.
7. Slide stuffing boxes (3-073-9) off of the shaft, working
deflector ring (3-136-9) off the shaft at the same time (See
Photo 15).
8. Drive oil seal (3-177-9) from the stuffing box.
9. Drive mechanical seal seat (3-401-0) from the stuffing
box.
10. Remove two casing rings (3-003-9) from the impeller
(4-002-0) and remove “O” ring (3-914-2) and locating pin
(3-943-9) from each casing ring (See Photo 16).
11. Remove mechanical seal head (3-402-0) from the pump
shaft. If set collar (3-421-9) must be removed, scribe a line
on shaft sleeve (3-009-9) flush with end of seal.
12. Loosen set screw (3-902-3) in shaft nut (3-015-9) and
remove the nut. On pumps built after 1991, remove
O-rings from counterbore in shaft sleeves.
13. Remove shaft sleeve (3-009-9) and impeller (4-002-0).
NOTE: Apply heat uniformly to the shaft sleeve to loosen
the sealant between the shaft and sleeve. DO NOT HEAT
ABOVE 300°F. To further assist in removing the sleeve,
hold the shaft vertically and drop it on a block of wood.
The impeller weight should force both the impeller and
sleeve from the shaft.
CAUTION: Excessive Pressure Hazard
Make certain the internal pressure is relieved before
continuing. Failure to follow these instructions could result
in serious personal injury or death and property damage.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
Photo 14 – Rotating Element
Photo 16 – Removing Casing
Rings from Impeller
Photo 15 – Removing stuff Box
and Deflector
2Î
14. Remove the other seal, shaft sleeve and nut as described
in steps 11, 12 and 13.
NOTE: For impellers with replaceable rings – remove the
rings (4-004-9) by cutting the rings with a cold chisel.
15. Remove impeller key (3-911-1).
ASSEMBLY
All bearings, “O” rings, seals and gaskets should be replaced
with new parts during assembly. All reusable parts should be
cleaned of all foreign matter before reassembling. The main
casing joint gasket should be made using the upper half as a
template. Lay the gasket material on the casing joint and mark
it by pressing it against the edges of the casing. Trim the
gasket so that it is flush with the inside edges of the casing.
1. Assemble impeller key (3-911-1) in the shaft keyslot.
2. Check the impeller (4-002-0) and casing to determine the
correct impeller rotation (See Figure 33) and locate the
impeller on the shaft per dimension “C” given in Table on
page 20.
NOTE: For impellers with replaceable rings, heat each
new ring (4-004-9) and slide it onto the impeller. Hold
rings against the impeller shoulder until they cool.
3. Apply
1
/2" wide bead of LOCTITE or PERMATEX sealant
to outboard end of shaft – 3" from the impeller hub.
4. Slide sleeve (3-009-9) onto shaft, rotating the sleeve to
evenly distribute the sealant applied in step 3. On pumps
built after 1991, install sleeve O-ring onto the shaft, into
the sleeve counterbore.
IMPORTANT: The pin in sleeve must seat in the impeller
keyslot for proper sleeve alignment.
5. Assemble shaft sleeve nut (3-015-9).
IMPORTANT: Assure that dimension “C” is maintained.
Drill a shallow recess in the shaft through the set screw
hold in the nut. Lock the nut in position with the set screw
(3-902-3).
6. Repeat steps 3 through 5 for the inboard shaft sleeve.
7. Assemble “O” rings (3-914-2) in each casing ring
(3-003-9) and slide ring onto the impeller (See Figure 21).
8. Press a new oil seal (3-177-9) into each stuffing box
(3-073-9).
NOTE: Seal lip must point away from the bearing.
9. Lubricate and roll “O” ring (3-914-1) into the groove in
each stuffing box.
10. Press the stationary seats (3-401-0) of the mechanical
seals into both stuffing boxes. Lightly lubricate the stuffing box bore to ease assembly (See Figure 13).
11. Obtain the set collar (3-421-9) locating dimension from
Table on page 20, and scribe the dimension on the shaft
sleeves. Install set collar on sleeve per dimension.
IMPORTANT: Steps 12 through 16 must be completed
within 10 to 12 minutes to assure proper placement of
mechanical seal.
12. Lightly coat the outboard end of the shaft sleeve with
soapy water or vegetable oil and slide the mechanical
seal head (3-402-0) onto the shaft sleeve against set
collar (See Photo 18).
13. Slide each stuffing box onto the shaft so that the shaft
end extends through the mechanical seal area, but
does not enter the oil seal. This will permit installation of
deflector (3-136-9).
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
Photo 17 – Installing Lip Seal
Photo 18 – Seal Head Installation
2{
14. Slide the deflector over the shaft end; then push the shaft
end through the oil seal and slide stuffing box fully onto
the shaft. DO NOT COMPRESS THE SEAL SPRING AT
THIS TIME.
15. Heat ball bearing (3-026-4), using either dry heat or a 10
to 15% soluble oil and water solution.
IMPORTANT: Do not exceed 275°F.
16. Using gloves, press the heated bearing onto the shaft
against the shaft shoulder (See Photo 19).
17. Install locknut and lockwasher or snap ring (3-915-4) on
the outboard end of the shaft.
18. Cool the bearing to room temperature and coat both
sides with two or three ounces of recommended grease.
19. Coat the inside of the bearing housing (3-025-4) with
grease and slide into place over bearing. Attaching the
bearing housing to the stuffing box with four capscrews
(3-904-9).
20. Repeat steps 12 through 16, 18 and 19, including
IMPORTANT NOTE in step 11, for inboard side of rotating
element.
NOTE: A snap ring is not installed on the inboard end of
the shaft.
21. Set the rotating element in the pump casing. Locate both
stuffing box tongues in their respective casing grooves.
Locate pins in stuffing box and wear rings in their respective slots at the casing parting surface. Correct any
excessive “O” ring buckling (See Photo 21).
NOTE: Do not cut or damage “O” rings when lowering the
rotating element into position. When all four pins are correctly located, there will be some casing ring looseness.
22. Install a new
1
/64 inch thick gasket with a light coat of
commercial cup grease on both gasket surfaces.
IMPORTANT: Align the inner edge of the gasket with the
stuffing box “O” rings.
23. Lower the upper half casing (2-001-7) into place and
install casing joint bolts (2-904-1 and -2).
IMPORTANT: When installing upper half casing, assure
that “O” rings are not cut or pinched.
24. Insert tapered casing joint dowels (2-916-1), and drive
them home.
25. Tighten the joint bolts to the following torque
values: 140 ft.-lb. minimum for
5
/8"-11 hex head cap-
screws (Grade 5); 350 ft.-lb. minimum for
7
/8"-9 Ferry Cap
Countr-bor screws (Grade 8). The bolt torque pattern is
shown in Figure 9 on page 12.
26. Rotate the shaft by hand to assure that it turns smoothly
and is free from rubbing or binding.
27. Install coupler and align. Replace coupler guard, see
separate instructions on page 00.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
Photo 20 – Rotating Element
Photo 21 – Upper Casing Half Removed
Photo 19 – Installing Shaft BeaRing
2x
3. Series HSC Pump – Packing
DISASSEMBLY
NOTICE: Numbers that appear in parenthesis ( ), such as
(1-939-9), may be used to order replacement parts.
3. Series HSC Pump – Packing
DISASSEMBLY
1. Close valves on suction and discharge sides of pump. (If
no valves have been installed, it will be necessary to drain
the system.)
CAUTION: Extreme Temperature Hazard
Allow pump temperatures to reach acceptable levels
before proceeding. Open drain valve, do not proceed until
liquid stops coming out of drain valve. If liquid does not
stop flowing from drain valve, isolation valves are not sealing and should be repaired before proceeding. After liquid
stops flowing from drain valve, leave drain valve open and
continue. Remove the drain plug located on the bottom of
the pump housing. Do not reinstall plug or close drain
valve until reassembly is completed. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before servicing.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
Photo 22 – Assembly Section: Pump With Packing
Photo 23 – Pump with Packing
Impeller rings can be added–
Optional Extra.
IMPELLER WEAR RING
2È
Remove coupler guard (see separate instructions on page
29) and disconnect coupler.
Remove external tubing (1-939-9) if supplied.
2. Loosen but do not remove main joint capscrews (2-904-1
and 2-904-2). Insert a screwdriver or pry bar into the slots
between the upper and lower casing halves – separate
joint.
3. Remove all casing main joint capscrews and dowels
(2-916-1), lift off the upper casing half.
4. Tap the stuffing boxes with a soft-headed hammer to
break the seal between the stuffing box and lower casing
half, and lift the rotating element out of the lower casing.
NOTE: A spare rotating element can be installed at this
point (See Figure 26).
5. Remove four capscrews (3-904-9) from each bearing
housing (3-025-3 and 3-025-4) and remove the bearing
housings from the shaft.
6. Remove snap ring (3-915-4) (or locknut and lockwasher
on pumps built after 1991) from the outboard end of the
shaft and, using a puller, remove the bearing (3-026-4)
from the shaft. Remove the drive end bearing in the same
manner.
NOTE: Snap ring is not used on drive end bearing.
IMPORTANT: Do not reuse the ball bearings.
7. Slide stuffing boxes (3-073-9) off of the shaft, working
deflector ring (3-136-9) off the shaft at the same time (See
Photo 25).
8. Drive oil seal (3-177-9) from the stuffing box.
9. Remove the two gland bolts, gland halves and packing
from each stuffing box.
10. Remove two casing rings (3-003-9) from the impeller
(4-002-0) and remove “O” ring (3-914-2) and locating pin
(3-943-9) from each casing ring (See Photo 25).
11. Loosen set screw (3-902-3) in shaft nut (3-015-9) and
remove the nut. On pumps built after 1991, remove
O-rings from counterbore in shaft sleeves.
12. Remove shaft sleeve (3-009-9) and impeller (4-002-0).
NOTE: Apply heat uniformly to the shaft sleeve to loosen
the sealant between the shaft and sleeve. DO NOT HEAT
ABOVE 300°F. To further assist in removing the sleeve,
hold the shaft vertically and drop it on a block of wood.
The impeller weight should force both the impeller and
sleeve from the shaft.
CAUTION: Excessive Pressure Hazard
Make certain the internal pressure is relieved before
continuing. Failure to follow these instructions could result
in serious personal injury or death and property damage.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
Photo 26 – Installing Shaft Bearing
Photo 24 – Rotating Element
(Packing Installed)
Photo 25 – Removing Stuffing Box
2Ç
13. Remove the other shaft sleeve and nut as described in
steps 11 and 12.
NOTE: For impellers with replaceable rings – remove the
rings (4-004-9) by cutting the rings with a cold chisel.
14. Remove impeller key (3-911-1).
ASSEMBLY
All bearings, “O” rings, seals and gaskets should be replaced
with new parts during assembly. All reusable parts should be
cleaned of all foreign matter before reassembling. The main
casing joint gasket should be made using the upper half as a
template. Lay the gasket material on the casing joint and mark
it by pressing it against the edges of the casing. Trim the
gasket so that it is flush with the inside edges of the casing.
1. Assemble impeller key (3-911-1) in the shaft keyslot.
2. Check the impeller (4-002-0) and casing to determine the
correct impeller rotation (See Photo 27) and locate the
impeller on the shaft per dimension “A” given in Table on
page 24.
NOTE: For impellers with replaceable rings, heat each
new ring (4-004-9) and slide it onto the impeller. Hold
rings against the impeller shoulder until they cool.
3. Apply
1
/2" wide bead of LOCTITE or PERMATEX sealant
to outboard end of shaft – 3" from the impeller hub.
4. Slide sleeve (3-009-9) onto shaft, rotating the sleeve to
evenly distribute the sealant applied in step 3. On pumps
built after 1991, install sleeve O-ring onto the shaft, into
the sleeve counterbore.
IMPORTANT: The pin in sleeve must seat in the impeller
keyslot for proper sleeve alignment.
5. Assemble shaft sleeve nut (3-015-9).
IMPORTANT: Assure that dimension “A” is maintained.
Drill a shallow recess in the shaft through the set screw
hold in the nut. Lock the nut in position with the set screw
(3-902-3).
6. Repeat steps 3 through 5 for the inboard shaft sleeve.
7. Assemble “O” rings (3-914-2) on each casing ring
(3-003-9) and slide ring onto the impeller (See Photo 28).
8. Press a new oil seal (3-177-9) into each stuffing box
(3-073-9).
NOTE: Seal lip must point away from the bearing.
9. Lubricate and roll “O” ring (3-914-1) into the groove in
each stuffing box.
10. Slide each stuffing box onto the shaft, but does not
enter the oil seal. This will permit installation of deflector
(1-136-9).
11. Slide the deflector over the shaft end; then push the shaft
end through the oil seal and slide stuffing box fully onto
the shaft.
12. Heat ball bearing (3-026-4), using either dry heat or a 10
to 15% soluble oil and water solution.
IMPORTANT: Do not exceed 275°F.
13. Using gloves, press the heated bearing onto the shaft
against the shaft shoulder (See Photo 29 on page 28).
14. Install locknut and lockwasher snap ring (3-915-4) on the
outboard end of the shaft.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
CAUTION: Extreme Temperature and/or
Flying Debris Hazard
Eye protection and gloves required. Failure to follow these
instructions could result in property damage and/or moderate personal injury.
Photo 28 – Installing Lip Seal
Photo 27 – Drilling Set Screw Recess
2n
15. Cool the bearing to room temperature and coat both
sides with two or three ounces of recommended grease.
16. Coat the inside of the bearing housing (3-025-4) with
grease and slide into place over bearing. Attaching the
bearing housing to the stuffing box with four capscrews
(3-904-9).
17. Repeat steps for inboard side of rotating element.
NOTE: A snap ring is not installed on the inboard end of
the shaft.
18. Set the rotating element in the pump casing. Locate both
stuffing box tongues in their respective casing grooves.
Locate pins in stuffing box and wear rings in their respective slots at the casing parting surface. Correct any
excessive “O” ring buckling (See Photo 30).
NOTE: Do not cut or damage “O” rings when lowering the
rotating element into position. When all four pins are correctly located, there will be some casing ring looseness.
19. Install a new 1/64 inch thick gasket with a light coat of
commercial cup grease on both gasket surfaces.
IMPORTANT: Align the inner edge of the gasket with the
stuffing box “O” rings.
20. Lower the upper half casing (2-001-7) into place and
install casing joint bolts (2-904-1 and -2).
IMPORTANT: When installing upper half casing, assure
that “O” rings are not cut or pinched.
21. Insert tapered casing joint dowels (2-916-1), and drive
them home.
22. Tighten the joint bolts to the following torque values: 140
ft.-lb. minimum for
5
/8"-11 hex head capscrews (Grade 5);
350 ft.-lb. minimum for
7
/8 "-9 Ferry Cap Countr-bor
screws (Grade 8). The bolt torque pattern is shown in
Illustration 10.
23. Rotate the shaft by hand to assure that it turns smoothly
and is free from rubbing or binding.
24. Install coupler and align. Replace coupler guard, see
separate instructions on page 29.
25. Install 12 full rings of packing (6 per stuffing box) so that
the ends butt, leaving no gap between the packing and
the stuffing box.
26. Assemble the glands, washers, and bolts square with the
stuffing box and pull tight. Then loosen the gland bolts to
permit the packing to expand. Then re-tighten finger tight.
Final adjustment of the gland bolts must be done with the
pump running. Allow 30 minutes between adjustments. A
good adjustment should allow approximately one drip per
second.
WARNING: Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury or death and property damage.
Photo 30 – Rotating Element
(Packing Installed)
Photo 31 – Upper Casing Half Removed
Photo 29 – Installing Shaft Bearing
2
D. ORDERING PARTS
The pumps covered by this manual have been designed and
built with certain replaceable wearing parts. The recommended inventory of spare parts depends upon the installation
and the importance of continued operation.
For critical service requiring a minimum of “down time” a complete or “quick change” rotating element is recommended.
For normal service, with repairs to be made in the field, the
following parts are recommended for stock.
1 set of bearings
1 set of wearing rings
1 set of gaskets, “O” rings and grease seals
2 mechanical seals (complete)
or
2 sets of packing (if provided)
1 set of shaft sleeves (if provided)
Parts should be ordered as far in advance of their use as possible since circumstances beyond the control of the company
may reduce existing stock. Not all parts are stocked and must
be manufactured for each order.
To facilitate rapid handling of your order for spare parts, be
sure to include the following information:
1. Serial number of the pump.
2. Catalog number of the part.
3. Quantity of each part.
4. Name of the part.
5. Material desired. (Parts will be furnished in original
materials unless specified as a material change. All material
substitutions should be discussed with the factory.)
DEALER SERVICING
If trouble occurs that cannot be rectified, contact your local
B&G Representative. He will need the following information in
order to give you assistance.
DEALER SERVICING
1. Complete nameplate data of pump and motor.
2. Suction and discharge pipe pressure gauge readings.
3. Ampere draw of the motor.
4. A sketch of the pumping hook-up and piping.
CAPSCREW TORQUE (FOOT-POUND)
CAPSCREW HEAD
CAPSCREW DIAMETER
TYPE MARKING 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1
SAE Grade 2 6 13 25 38 60 120 190 210 300
Brass
Stainless Steel
or 4 10 17 27 42 83 130 200 300
SAE Grade 5 10 20 35 60 90 180 325 525 800
SAE Grade 8 13 28 46 75 115 225 370 590 895
Îä
Xylem
1) The tissue in plants that brings water upward from the roots;
2) a leading global water technology company.
We’re 12,500 people unified in a common purpose: creating innovative solutions
to meet our world’s water needs. Developing new technologies that will improve
the way water is used, conserved, and re-used in the future is central to our work.
We move, treat, analyze, and return water to the environment, and we help people
use water efficiently, in their homes, buildings, factories and farms. In more than
150 countries, we have strong, long-standing relationships with customers who
know us for our powerful combination of leading product brands and applications
expertise, backed by a legacy of innovation.
For more information on how Xylem can help you, go to www.xyleminc.com
Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: (847) 966-3700
Fax: (847) 965-8379
www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem, Inc. P81875F November 2012
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