Xylem IMVIC R01 Model VIC Vertical Industrial Turbine Can Pumps - Manual (Page 6)

6
Uncontrolled Long Term Storage Preparations
When applicable to the pump, storage periods over six
months require the preceding storage procedure and
storage preparation plus the following:
Inspect the lube oil and seal flush piping and either
fill the piping with rust preventative oil, or re-coat the
piping periodically to prevent corrosion.
Place 10 pounds (4.5 kg) of moisture absorbing desiccant
or 5 pounds (2.3 kg) of vapor phase inhibitor crystals
near the center of the pump. If the pump is assembled,
place an additional one pound (0.5 kg) in the discharge
nozzle securely fastened to the discharge elbow.
Install a moisture indicator near the perimeter of the
pump. Cover the pump with 6 mil (0.15 mm) minimum
thickness black polyethylene or equal and seal it with
tape. Provide a small ventilation hole approximately ½
inch (12 mm) diameter.
Provide a roof or shed shelter to protect from direct
exposure to the elements.
GENERAL DESCRIPTION
The model VIC pump is a vertical industrial turbine type
pump installed in a can (barrel), and is designed to meet
wide ranges of service with maximum dependability. See
Figure 1 or Figure 2 for some typical VIC pump.
Drivers
When mechanical seals are required, the most common
type of drivers supplied are solid vertical shaft motors
with adjustable spacer type couplings. When packed
stuffing boxes are used with open line shaft pumps,
hollow shaft motors or right angle gear drives, are often
used with a separate head shaft through the driver and
connected to the pump by a threaded coupling.
Discharge Head
The discharge head is either a cast iron head or a
fabricated head. Ports are provided for connecting
the pressure gauge, stuffing box or mechanical seal
bypass return and lubricator connections. The driver
support portion of the discharge head is designed with
large windows for easy stuffing box or mechanical seal
adjustment. The windows are covered with coupling
guards for safe operation.
Column
Threaded or flanged column construction provides
positive shaft and bearing alignment and ease of assembly
and disassembly. The line-shaft is supported within
the column by using bearing retainers in the column
assembly. The retainers are usually integrally fabricated
in the column pipes. Bearings are spaced to provide
vibration free operation below the shaft first critical
speed in order to insure long bearing life and reduced
shaft wear.
Bowl Assembly
The bowls are generally of flanged construction for
accurate alignment and ease of assembly and disassembly.
Impellers may be either open or enclosed depending
on the design requirements. They are fastened to the
pump shaft by taperlocks. For temperatures over 140°F
(60°C) and in the larger size bowls (over 18”), impellers
are keyed to the shaft. A special first stage low NPSH
impeller may be provided in certain application.
Thrust Pot
A thrust pot is utilized when the driver is not designed to
carry the pump thrust.