Xylem Bell & Gossett 80-PF Series User manual

Instructions for Replacing
The Packing on 1510, 1531
&Series 80® -PF Type Pumps
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.
SERVICE INSTRUCTIONS
1. Close valves on suction and discharge sides of pump. (If
no valves have been installed, it will be necessary to drain
the system).
2. For 1531 and Series 80 pumps:
Remove motor foot capscrews (1531 only). Loosen volute
capscrews, but do not remove them. Use capscrews in
the jackscrew holes provided. Begin to remove the pump
assembly from the volute.
For 1510 pumps:
Remove coupler guard and loosen set screws in both
coupler halves. Slide each half back as far as possible on
its shaft. Remove coupler sleeve. Where a full diameter
impeller is being used, it may be necessary to remove the
pump side coupler half and slide the motor back on its
base in order to gain sufficient clearance to remove the
pump assembly from the volute. Remove the pump
assembly from the volute. Remove support foot capscrews.
Loosen volute capscrews, but do not remove them. Use
capscrews in the jackscrew holes provided. Begin to re-
move the pump assembly from the volute.
3. Remove seal flushing tube.
Remove the volute capscrews and remove the pump
assembly from the volute.
4. Remove the impeller capscrew, lock washer and washer.
Remove the impeller.
5. Remove hex nuts from packing gland and remove cover-
plate capscrews. Remove coverplate from bracket.
6. Remove packing rings from the stuffing box.
7. Check condition of shaft sleeve and replace if scored or
otherwise damaged.
8. Insert two packing rings in the stuffing box followed by the
lantern ring and then the remaining two pieces of packing.
Make certain that the packing joints are staggered 90°.
9. Install, but do not tighten the packing gland.
10. Install coverplate over the pump shaft, tighten capscrews
(per torque chart on page 4).
11. Tighten packing gland to compress packing.
12. Install impeller, impeller washer, lock washer and cap-
screw, then tighten (per torque chart on page 4).
13. Install new volute gasket, then install pump assembly into
volute. Tighten volute capscrews (per torque chart). Install
seal flushing tube.
CAUTION: Extreme Temperature Hazard
Allow the pump temperature to reach an acceptable
level before proceeding. Open the drain valve and do not
proceed until the liquid has completely drained. If the liquid
does not stop flowing from the drain valve, then the isola-
tion valves are not sealing and should be repaired before
continuing. After the liquid has stopped flowing, leave the
drain valve open and continue. Remove the drain plug
located on the bottom of the pump volute. Do not reinstall
this plug or close the drain valve until the reassembly is
complete. Failure to follow these instructions could result
in moderate personal injury and/or property damage.
WARNING: Electrical Shock Hazard
Disconnect and lockout the power before making
electrical connections. Failure to follow these instructions
could result in serious personal injury, death and/or property
damage.
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
WARNING: Excessive Pressure Hazard
Make certain internal pressure of the pump is relieved
before continuing. Failure to follow these instructions could
result in serious personal injury, death and/or property
damage.
INSTRUCTION MANUAL
P81747C

For 1531 and Series 80 pumps:
Install motor foot capscrews (1531 only) and tighten. Install
drain plug and close drain valve.
For 1510 pumps:
Install support foot capscrews and tighten. Install coupler and
align per instructions on page 3. Install coupler guard and
drain plug. Close drain valve.
14. Open isolation valves and inspect pump for leaks. If not
leaking return pump to service.
NOTE: Before starting pump, back off packing gland nuts or
screws until glands are loose. Re-tighten with fingers until
glands are just snug against the first packing ring. After pump
is running at first start, water may run freely from packing. This
is normal and should be allowed to continue for a period of
time before further tightening of the glands. Take up gland
bolts uniformly, one flat at a time.
An adequate leakage rate is not one single value for all pumps
and installations, but is the amount required to provide ade-
quate cooling and lubrication. The required leakage will be
largely influenced by operating pressure, fluid temperature,
shaft speed, etc.
For fluid temperatures in the range of 32°to 190°F, average
leakage rates of 60 to 80 drops per minute are recommended.
However, each individual pump and installation will have
unique operating conditions that will result in broadly variable
leakage rate requirements.
At fluid operating temperatures near the upper limit of 190°F,
the maximum temperature rise of the leakage is particularly
important. A packed pump should never operate with steam
forming on the gland. This necessarily limits the temperature
rise to a maximum of about 20°F. If the formation of steam
persists at higher leakage rates, cooling water must be pro-
vided by means of an external supply, or a heat exchanger
used to cool the by-pass flush.
WARNING: Rotating Component Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious
personal injury, death and/or property damage.
FIGURE 1
FIGURE 2
1510-PF PUMP
1531-PF PUMP
FLUSHING TUBE
COVER PLATE
CAPSCREW
PACKING
GLAND
BRACKET
NOTE: Series 80-PF pump constructed similarly, but mounted vertically.
2
IMPELLERVOLUTEVOLUTE
GASKET
COVER-
PLATE
COVERPLATE
CAPSCREWS
FLUSHING
TUBE
LANTERN
RING
PACKING
PACKING
GLAND
BEARING
FRAME
SHAFT
SLINGER
SHAFT
SLEEVE
BRACKET IMPELLER
KEY
IMPELLER
W
ASHER
VOLUTE
CAPSCREWS
IMPELLER
LOCK
WASHER
IMPELLER
CAPSCREW
DRAIN PLUG

COUPLER ALIGNMENT
All alignment should be done by moving or shimming the
motor only. Adjustments in one direction may alter alignment
in another. Therefore, check alignment in all directions after a
correction is made. Black rubber sleeves have different
horsepower load ratings then orange Hytrel sleeves, they
should not be interchanged.
Standard Sleeve Type Coupler with Black Rubber Sleeve
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 face of one flange to the outside
face of the opposite flange at four points 90° apart. Refer to
figure 4. 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. Refer to figure 3.
For Fine Alignment, Orange Hytrel Sleeves,
3500 RPM Operation, or All Other Coupler Types
Use a dial indicator when greater alignment accuracy is
required. Use the following alignment tolerances unless speci-
fied otherwise by the coupler manufacturer. On sleeve type
couplers make sure there is at least 1/8" end clearance
between the sleeve and the two coupler halves.
1. To check angular misalignment, mount the dial indicator
base to one coupler half or shaft, and position the dial indi-
cator button on the front or rear face of the opposite cou-
pler half. Set the dial to zero. Rotate both coupler halves
together, making sure the indicator button always indi-
cates off the same spot. Misalignment values within 0.004"
TIR per inch of coupler radius are permissible.
2. To check parallel misalignment, mount the dial indicator
base to one coupler half, or shaft, and position the dial indi-
cator button on the outside diameter of the opposite cou-
pler half. Set the dial to zero. Rotate both coupler halves
together, making sure the indicator button always indi-
cates off the same spot. Misalignment within 0.004" TIR is
permissible.
3
ANGULAR ALIGNMENT CHECK
FIGURE 4
AMOUNT OF
PARALLEL
MISALIGNMENT STRAIGHT EDGE
PARALLEL ALIGNMENT CHECK
FIGURE 3
DISTANCES ACROSS
COUPLER FLANGES
SHOULD BE EQUAL
(CHECK 4 PLACES)
WARNING: ROTATING COMPONENT HAZARD
Do not operate pump without all guards in place.
Failure to follow these instructions could result in serious per-
sonal injury or death, and 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.

Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: [phone]
Fax: [phone]
www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. P81747C May 2012