Bell & Gossett Series 80®-PF Type Pumps - 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