Series 80-SC Spacer-Coupled Vertical In

Series 80-SC Spacer-Coupled Vertical In
Bell & Gossett®
Instruction Manual P71396
REVISION A
Series 80-SC
Spacer-Coupled Vertical
In-Line Centrifugal Pump
Installation, Operation
& Service Instructions
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
DESCRIPTION
PUMP APPLICATION
The Series 80-SC centrifugal pump is a split coupled pump
which features – high efficiency, rugged construction, and vertical in-line mounting. These features make installation, operation and service easy to perform.
The Series 80-SC 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 of benign liquids.
For other applications contact your local B&G Representative.
OPERATIONAL LIMITS
SEAL OPERATING LIMITS
Unless special provisions have been made for your pump by
ITT Bell & Gossett, the operational limits for Series 80-SC
Pumps are as follows:
SEALS WITH INTERNAL FLUSH
BUNA–Carbon–Ceramic–PH Limitations 7-9; Temperature
Range –20 to +225°F
EPR–Carbon-Ceramic PH Limitations 7-9; Temperature Range
–20 to +250°F*; Maximum Pressure is 175 psig
EPR–Carbon-Tungsten-Carbide PH Limitations 7-11;
Temperature Range –20 to +250°F*; Maximum Pressure is
250 psig
MAXIMUM WORKING PRESSURE
Listed on pump nameplate.
For use on closed or open systems which are relatively free of
dirt and/or other abrasive particles.
For use on closed or open low pressure systems which
may contain a high concentration of abrasives. The use of
flush-line filter or sediment separators are required to maintain
seal life.
*For operating temperatures above 250°F and no greater than 300°F a cooled
flush is required. On closed systems cooling is accomplished by inserting the
optional heat exchanger kit in the flush line to cool the seal flushing fluid.
Flush-line Filters and Sediment Separators are available on special request.
SAFETY
INSTRUCTIONS
This safety alert symbol will be used in this manual and on 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.
FIG. 1
Your Series 80-SC Pump should have the following safety instruction decals located approximately as shown. If the decals are missing or are illegible contact your local B&G representative for a
replacement.
CAUTION
WARNING
THE PUMP IS TO BE VERTICALLY
MOUNTED WITH THE MOTOR
ON TOP.
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 PROPERTY DAMAGE.
FAILURE TO FOLLOW
INSTRUCTIONS COULD RESULT IN
INJURY OR DEATH.
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.
WARNING
ROTATING COMPONENTS
DISCONNECT AND LOCK OUT
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.
ADDITIONAL SAFETY REQUIREMENTS
ADDITIONAL SAFE-
ELECTRICAL 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, and property
damage.
WARNING: ELECTRICAL OVERLOAD HAZARD
Three phase motors must have properly sized heaters
to provide overload and under voltage protection. Single
phase motors have built-in overload protections. Failure to
follow these instructions could result in serious personal
injury or death, and property damage.
THERMAL SAFETY:
WARNING: EXTREME TEMPERATURE HAZARD
If pump, motor, or piping are operating at extremely
high or low temperature, guarding or insulation is required.
Failure to follow these instructions could result in serious
personal injury or death, and property damage.
2
WARNING: UNEXPECTED STARTUP HAZARD
Disconnect and lockout power before servicing.
Failure to follow these instructions could result in serious personal injury or death, and property damage.
WARNING: EXCESSIVE SYSTEM
PRESSURE HAZARD
The maximum working pressure of the pump is listed on the
nameplate, do not exceed this pressure. Failure to follow
these instructions could result in serious personal injury or
death, and 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, and property damage.
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.
FIG. 2
WARNING: FALLING OBJECT 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, and property damage.
If lifting of the entire pump is required, do so with slings placed
around the pump assembly as shown in Fig. 2. The pump can
also be lifted with multiple slings through the motor bracket
just under the motor. These pumps are heavy and care must
be exercised in lifting them to avoid damage.
Special precautions to avoid sound and vibration transmission
should be taken if the pump is to be located near a noise sensitive area, a sound specialist should be consulted.
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.
IMPORTANT: Do not install and operate ITT 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.
COMPRESSION TANK SHOULD
BE LOCATED ON THE
SUCTION SIDE OF THE PUMP
SUPPLY TO SYSTEM
B&G ROLAIRTROL
AIR SEPARATOR
B&G REDUCING
VALVE
FROM BOILER
CHILLER OR CONVERTER
COLD WATER
SUPPLY
B&G CIRCUIT SETTER
B&G TRIPLE DUTY VALVE
ISOLATION
VALVE
FIG. 3
B&G SERIES
80-SC PUMP
B&G SUCTION DIFFUSER
3
PIPING
Always install a section of straight pipe between the suction
side of the pump and first elbow or install a B&G Suction
Diffuser. This reduces turbulence of the suction by straightening out the flow of liquid before it enters the pump. The pipe
length should be equal to five times the diameter of the pipe or
more.
Be sure to eliminate any pipe-strain on the pump. Support the
suction and discharge pipes independently by use of pipe
hangers or ground supports close to the pump. A support can
be bolted to the underside of the pump body but it must be so
constructed as to allow freedom of movement with the
normal expansion of the piping. Failure to properly support
the pipes can cause pump damage.
THESE PUMPS CAN ONLY BE MOUNTED
VERTICALLY WITH THE MOTOR UPWARD.
Line up the piping so that the bolt-holes in the pump flanges
match the bolt-holes in the pipe flanges. DO NOT ATTEMPT
TO SPRING THE SUCTION OR DISCHARGE LINES INTO
POSITION. The code for Pressure Piping (A.S.A.B.31.1) lists
many types of supports available for various applications.
As a rule, ordinary wire or band hangers are not adequate to
maintain alignment. It is very important to provide a strong,
rigid support for the suction and discharge lines.
Where considerable temperature changes are anticipated, fittings for absorbing expansion must be installed in the system
in such a way as to avoid strain on the pump.
On an open system with a suction-lift, use a foot-valve of
equal or greater area than the pump suction piping. Prevent
clogging by using a strainer at the suction inlet next to the
foot-valve. The strainer should have an area three times that of
the suction pipe with a mesh hole diameter of no less than 1/4".
A Bell & Gossett Triple Duty Valve installed in the discharge line
will serve as a check valve to protect the pump from water
hammer, and as an isolation valve for servicing and for
throttling.
NOTES:
1. The pipeline should have isolation valves around the pump
and have a drain valve in the suction pipe.
PIPING
PIPING
ROTATION
LUBRICATION
Pump rotation is clockwise when viewed from the top of the
motor. An arrow is provided on the volute to show direction of
rotation.
Your Series 80-SC pump motor has been lubricated at the factory, future lubrication should be accordance with the motor
manufacturers instructions.
GENERAL INSTRUCTIONS
1. Keep the motor properly lubricated.
2. When there is a danger of freezing, drain the pump.
3. Inspect pump regularly for leaky seals or gaskets and loose
or damaged components. Replace or repair as required.
4
PRIMING AND STARTING
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.
Before starting the pump, the pump body must be full of liquid.
Manual priming may be required if the system does not automatically fill the pump body with liquid. Vent plugs and flush
line valve are provided on the pump body to vent the air. While
venting the air from the pump body, the pump shaft should be
rotated a few times by hand. The pump must be filled with
water while the flush line valve is open to vent air from the seal.
After all air has escaped close the flush line valve.
WARNING: UNEXPECTED STARTUP HAZARD
Disconnect and lockout power before servicing.
Failure to follow these instructions could result in serious personal injury or death, and property damage.
The pump should be started with the discharge valve closed
and the suction valve fully open. After the pump is up to operating speed the discharge valve should be opened slowly.
IMPORTANT: The pump should never be operated with the
suction valve closed or throttled for more than a few minutes.
This could result in cavitation which can cause pump damage.
FIG. 4
SERIES 80-SC WITH INSIDE
MECHANICAL SEAL
FIG. 5
SERIES 80-SC WITH OUTSIDE
MECHANICAL SEAL
5
FIG. 6
MULTI PART
SEAL DISTANCE
1-1/4" SEAL – 1.125"
1-5/8" SEAL – 1.414"
SEAL CAP BOLTS
SEAL SPRING RETAINER
WITH TWO SET SCREWS
FIG. 7
TC MOTOR
MOTOR
MOUNTING
SURFACE
DC
COLLAR
RING
FIG. 8
IEC MOTOR
MOTOR
MOUNTING
SURFACE
6
DC
COLLAR
RING
SERVICE INSTRUCTIONS
WARNING: UNEXPECTED STARTUP HAZARD
Disconnect and lockout power before servicing.
Failure to follow these instructions could result in serious personal injury or death, and property damage.
CAUTION: EXTREME TEMPERATURE HAZARD
Allow pump temperature to reach acceptable level
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 at the bottom of
the pump volute. Do not reinstall plug or close drain valve until
reassembly is completed. Failure to follow these instructions could result in serious personal injury or property
damage.
WARNING: 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.
MOTOR COLLAR RING SETTING
CAUTION : The Motor Collar Ring must be set on the
motor shaft at the correct position and set screws
torqued to the proper value. Failure to follow instructions
could result in injury or property damage.
The motor collar ring must be set on the motor shaft at a
specified distance for both TC motors and IEC motors to
insure the pump impeller is in the proper position during
pump operation. The distance to set the collar ( DC ) is measured from the motor mounting surface to the surface of the
collar ring closest to the motor. This distance is shown in Fig.
7 for TC motors and Fig. 8 for IEC motors.
The collar ring is held in position on the motor shaft with three
or four set screws. These set screws must be tightened to the
proper torque to ensure that the collar does not slip as a
result of pump rotor weight and pump hydraulic thrust.
The following Table specifies the collar setting distance, set
screw size and set screw torque for TC motors and IEC
motors.
SEAL SETTING
If the pump is fully disassembled and the shaft or bearing are
replaced, it may be necessary to reset the seal.
Inside Seal
The position of the unitized seal is set with a snap ring placed
on the pump shaft. The snap ring is positioned on the shaft by
a machined groove and no adjustment is possible. The unitized seal sets directly up to the snap ring.
To set the multi part inside seal position set the bottom edge
of the Spring Retainer the distance shown in Fig. 6 from the
Shaft Shoulder.
The seal spring retainer set screws must be tightened to
20 in-lbs torque to ensure the spring retainer will hold in
position.
Lubricate the seal with P80 and then slide into place over
shaft.
When installing the seal cap tighten the four bolts evenly to
avoid misalignment and seal seat damage.
Outside Seal
1. Leave the seal Holding Clips in the seal.
2. Tighten the Seal Gland Bolts evenly.
3. Lubricate the seal with P80 and slide over the shaft.
4. Install the coupling to properly position the pump shaft.
5. Insure the Seal is tight against the Seat.
6. Tighten the seal Set Screws onto the Shaft.
7. Remove seal Holding Clips. The seal is now set. Store the
seal Holding Clips in case the seal has to be removed in
the future.
COLLAR SETTING DISTANCE
Motor Frame
Size
182TC – 184TC
213TC – 215TC
254TC – 256TC
284TC – 286TC
324TSC – 365TSC
D80 IEC
D90 IEC
D100 – D112 IEC
D132 IEC
D160 IEC
D180 IEC
D200 IEC
D225 IEC
D250 IEC
Distance
Collar (DC)
in (mm)
Set Screw
Size
Set Screw
Torque
in – lbs
2.121 (53.87)
2.597 (65.96)
3.227 (81.97)
3.735 (94.87)
2.855 (72.52)
1.076 (27.33)
1.470 (37.34)
1.863 (47.32)
2.627 (66.73)
3.686 (93.62)
3.686 (93.62)
3.686 (93.62)
4.762 (120.95)
4.762 (120.95)
#8-32UNC
#10-32UNF
#10-32UNF
.25-28UNF
.25-28UNF
#8-32UNC
#8-32UNC
#8-32UNC
#10-32UNF
.25-28UNF
.25-28UNF
.25-28UNF
.313-24UNF
.313-24UNF
20
36
36
87
87
20
20
20
36
87
87
87
165
165
The set screw must be held in place after being torqued to the
correct value with a small amount of Loctite 222MS threadlocker or equivalent.
7
COUPLER ASSEMBLY
CAUTION: The coupling must be installed properly
to insure vibration free pump operation. Failure to follow
instructions could result in injury 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, and property damage.
WARNING: EXTREME TEMPERATURE HAZARD
If pump, motor, or piping are operating at extremely
high or low temperature, guarding or insulation is required.
Failure to follow these instructions could result in serious
personal injury or death, and property damage.
WARNING: EXCESSIVE PRESSURE HAZARD
The maximum working pressure of the pump is listed
on the nameplate, do not exceed this pressure. Failure to
follow these instructions could result in serious personal
injury or death, and property damage.
The coupler is assembled in the following manner:
1. Insure that the coupler halves are clean and burr free. Use
sand paper to remove any burrs and sharp edges within the
keyways, collar ring groove and set screw collar groove. Rings
and keys must slide within their grooves without interference.
2. The pump coupling uses keys, collar rings, which are split
collars, and set screw collars, which are full rings with three
set screws, to maintain the motor and pump shaft position.
The pump shaft always has one collar ring. The TC and IEC
motors have a set screw collar set on the motor shaft. An
HP type motor uses a split collar ring that fits into the motor
shaft groove.
The halves of a collar rings are matched and must be only
used together. The collar ring has a letter on each half identifying the set, the letters must match. The collar ring must
be installed in the coupling as matched pairs, with the letter
pointing toward the pump impeller.
3. If the motor is a TC or IEC motor type, install the motor set
screw collar first, according to “Motor Collar Ring Setting”
instructions.
4. The impeller weight and seal spring force cause the shaft to
move downward; therefore half the coupler should be
assembled into the pump shaft with collar. Then the pump
shaft must be pulled up and the motor collar ring or motor
set screw collar inserted into the coupling.
5. Install the keys and the other half of the collar ring or rings.
Then install the second half of the coupler. Insert the coupler hex head bolts and put a lock washer and nut on each
bolt. The bolt heads on opposite sides of the coupling
should face in different directions as shown in Fig. 9.
Tighten the bolts evenly to avoid misalignment. Rotate the
shaft by hand and make sure the gap on both sides of the
coupler is approximately equal see Fig. 9. If the gap is not
equal, loosen the bolts and repeat the tightening step. Also
the gap must be equal from the top to the bottom of the
coupling.
6. Slowly rotate the shaft by hand and check to see if any rubs
occur. If no rubs occur, then prime and start the pump for
two minutes and determine if the pump runs smooth and
vibration free. If problems occur check installation of the
coupling and repeat as necessary.
SEAL REPLACEMENT
The inside or outside seal can be replaced without removing
the motor. This is done in the following manner:
1. Remove the coupling guard.
2. Remove the flush line from the seal cap.
3. In the case of an outside seal, put seal clips in the seal and
then loosen the set screws that hold the seal on the shaft.
4. Remove the coupler halves. Tape the collar rings together
in pairs as assembled, previously. Note, that the shaft will
drop down when the coupling is removed.
5. In the case of an outside seal remove the seal.
6. Remove the seal cap or seal gland through the space
between shafts. Then remove the seal seat from the seal
cap or gland. In case of an inside seal, remove the seal
using a pair of screwdrivers, to ply the seal out.
7. Clean the seal box, seal cap or gland and shaft.
CAUTION: When handling the seal, avoid touching
the carbon face and ceramic face of the seal or getting these faces dirty. Failure to follow instructions could
result in injury or property damage.
8. Place the seal seat in the seal cap or gland, use P80 with
an inside seal.
9. In the case of an outside seal, install the seal according to
the steps outlined in section on SEAL SETTING, Outside
Seal.
10. In the case of an inside seal, lubricate the inside of the
seal with P80. Slide the seal and spring over the shaft
to the proper position. Install the seal cap and the four
bolts. Tighten the four seal cap bolts evenly to avoid
misalignment.
FIG. 9
GAP
COUPLING
NOTE: Couplings use either four or six bolts depending on the
motor size.
8
11. Install the coupling to properly position the pump shaft.
Tighten the four seal cap bolts evenly.
12. Reinstall the flush line.
13. Reinstall the coupling guard.
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.
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 pump hook-up and piping.
9
© Copyright © 2009 ITT Corporation
Printed in U.S.A. 10-09
THE ITT ENGINEERED BLOCKS SYMBOL AND
ENGINEERED FOR LIFE ARE REGISTERED
TRADEMARKS OF ITT MANUFACTURING
ENTERPRISES, INC.
ITT
8200 N. Austin Avenue
Morton Grove, IL 60053
Phone: (847) 966-3700
Fax: (847) 966-9052
www.bellgossett.com
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement