Xylem Bell & Gossett e-1510 Instruction Manual

e-1510, e-1532, e-1531, e-80, e-80SC, e-80SCXL,
e-82, and e-82SC pumps
Stainless Steel Impeller Trimming Guidelines
WARNING
cancer or birth defects or other reproductive harm. For more
information go to: www.P65Warnings.ca.gov.
Safety
• Proper personal protective equipment (PPE), adequate safety guards and proper material lifting
equipment are required for all machining and grinding operations.
• Gloves suitable for protection from sharp edges should be used during impeller handling and
machining, such as ANSI Cut Level 3 gloves.
Trimming
When it is necessary to reduce the pump flow rate and generated head by trimming the impeller diameter, the
following guidelines apply for machining the outer diameter of stainless steel impellers. These same machining
procedures can also be used for bronze impellers.
• To select the proper reduced diameter, review the pump hydraulic selection data and consult your
local Xylem representative.
• For certain models, as listed in the pump manual, a special Angle Cut is required on the impeller outer
diameter. Before trimming the impeller, look for a section in the pump manual titled Angle Cut.
• The recommended lathe is 30 hp (22 kw) or greater, with a minimum of two tool holders and suitable
for 13.5 in. (342.9 mm) diameter. A 20 hp lathe can be used, but will result in half the depth of cut
during roughing and extended trimming time.
• The impeller must be rigidly held in the lathe, therefore, the use of an arbor is recommended. The arbor
can be overhung from the chuck and does not need a tailstock, but if desired, a tailstock can be used.
See the pump Replacement Parts List if it is desired to purchase impeller trimming arbors.
• The recommended machining insert for roughing is Sandvik RCMT 20 06 MO 2025 and for the finish
cut Sandvik DCMT 3(2.5)2-UM 1115. Both are used without coolant.
This product can expose you to chemicals including
Lead which is known to the state of California to cause
INSTRUCTION MANUAL
REVISION C
P2002535