50 6EM Thru 18GM - 1100 Vertical Turbine Pumps
F. All seal plumbing should follow the appropriate
API Piping Plan for the installation and
application.
G. Some seals may weep at initial start-up. This
condition should cease after a short period as the
seal faces lap together. Operate and monitor the
seal until leakage subsides, in no case should it
exceed 60 drops per minute.
Routine Maintenance
Routine maintenance is minimal as follows:
A. Periodically (150 hours of operation) check to
see that pumped liquid is going through stuffing
box and out to wet well or drain.
B. Check that the gland bolts have not loosened.
Seal Removal
General
Stop the driver and lock out the power so
that the driver cannot accidentally start.
DANGER
Check with proper electrical testing
equipment to be certain all electrical
power to the driver and accessories
associated with the pump is
disconnected.
Single Inside Seal
A. Disconnect piping to seal gland (431).
B. Loosen the seal housing capscrews (431A).
C. Raise the gland (431) and loosen the setscrews
securing the retaining ring to the sleeve.
D. Use the adjusting nut and lower the impellers
until they rest on the bowl seats.
E. Loosen the shaft coupling. Remove the driver
shaft (19), or VHS motor if one-piece head shaft,
or spacer from the four-piece flanged coupling if
VSS motor.
F. Remove the seal gland (431) and stationary seat
(456A).
G. Remove the seal rotating seat (456).
H. Inspect all parts of the seal. If any parts show
signs of wear, the complete seal should be
replaced.
Single Outside Seal
A. Disconnect piping to seal gland (431).
B. Loosen the retainer ring setscrews.
C. Use the adjusting nut to lower the impellers until
they rest on the bowl seats.
D. Loosen the shaft coupling. Remove the driver
shaft (19), or VHS motor if one-piece head shaft,
or spacer from the four-piece flanged coupling if
VSS motor.
E. Loosen the capscrews securing the gland (431)
to the seal housing. Remove the seal rotating
assembly and the gland which contains the
stationary seat.
F. Inspect all parts of the seal. If any parts show
signs of wear, the complete seal should be
replaced.
Cartridge Seal
A. Disconnect piping to seal gland (431).
B. Install plastic tabs, setting devices, or pull cord to
retain proper spring tension
C. Loosen the collar set screws.
D. Use the adjusting nut to lower the impellers until
they rest on the bowl seats.
E. Loosen the shaft coupling. Remove the driver
shaft (19), or VHS motor if one-piece head shaft,
or spacer from the four-piece flanged coupling if
VSS motor.
F. Loosen the capscrews securing the gland (431)
to the seal housing. Remove the seal assembly.
G. Inspect all parts of the seal. If any parts show
signs of wear, the complete seal should be
replaced.
Assembly Tools
The following tools are to facilitate installation and
disassembly of the pump shaft (shaft locating tool)
and impeller (collet driver). These tools are available
for purchase from your Layne/Verti-Line
representative or they can be made according to the
dimensions given below.
Shaft Locating Tool
The shaft locating tool sets the proper position of
moving parts in relation to the stationary parts of the
bowl assembly.
Collet Driver
The collet drive is used to drive the split collet
between the impeller & pump shaft and when
reversed, can be used to loosen the collet when
disassembling the bowl assembly.
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