33 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
33 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
33 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
Vertical Turbine Pumps
Installation
Document Name: 2001299-VTP-IOM-EN Page 33 of 67
Revision 3 Copyright © 2014, Weir Floway, Inc. All Rights Reserved. Issue Date: December 12, 2014
5. Lock the adjusting nut with the lockscrew(s) inserted down through the holes in the adjusting nut and
threaded into the thrust bearing clutch. Use all lockscrews supplied.
6. After the impeller adjustment is completed, the flexible driver coupling may be installed.
5.12 Mechanical Seal
Separate instruction manuals are written covering installation and operation for various mechanical seal
arrangements. However, the following instructions are common to all seals:
1. Clean the seal cavity before installing the seal.
2. Clean the faces and registers of the seal housing and seal housing cover. Remove any burrs.
3. The shaft seal is a precision product. Treat it with care. Take appropriate care not to scratch or chip the
lapped faces of the runner or seat.
4. Leave any circulation lines in place and open, do not remove.
5. Impeller adjustment must be made prior to seal adjustment.
5.13 Packing Boxes
Packing boxes are pre-packed at the factory and are typically factory installed. Do not tighten the packing
gland at this stage. Refer to “Packing Box Adjustment” on page 36 for further information.
5.14 Enclosing Tube Tension
The enclosing tube (enclosed line shaft design) tension is pre-adjusted at the factory before shipping;
therefore, additional adjustment is not required. Refer to assembly instructions in “Assembly” on page 51 in
case assembly or adjustment is required for any reason.
CAUTION
DAMAGE TO THE PUMP AND THE DRIVER
Always ensure the adjusting nut is locked before starting the driver to avoid damage to the
pump and the driver.
CAUTION
DAMAGE DUE TO MECHANICAL SEAL TABS
• For pumps fitted with mechanical seals always follow the seal manufacturer’s instruction
manuals.
• Always remove the mechanical seal setting tabs prior to starting the pump.
• Failure to remove the tabs will result in damage to both the pump and the seal.
• Ensure that the set screws are tight before removing the setting tabs.
Refer to the seal manufacturer's instruction manual for proper installation, operation, and
maintenance.
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