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PAGE 10 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #3 (06/15/10)
ST2037, 47, 47B, 38P, 40T SUB. PUMP — GENERAL INFORMATION
Introduction
The Multiquip Model ST2037, ST2047, ST2047B, ST2038P, and
ST2040T submersible pumps are designed to pump water and
is used for the draining (de-watering) of swimming pools, well
casings construction sites, cofferdams, manholes, transformer
vaults and excavations.
A Nitorile rubber over steel impeller is attached to the output
shaft of a 1HP electric motor which provides adequate power for
general purpose pumping. This submersible pump is supplied
complete with an electric power cable, and a discharge port
located at the top of the pump which accepts a 2-inch hose.
This pump is ideal for portability because of its light weight and
carrying handle. For reliability and long life, a mechanical seal
provides shaft sealing, with an oil chamber separating the pump
section from the motor.
The pump when in use, should be installed as free standing
(upright position) on its strainer base. A 2-inch discharge hose
(not supplied) should be connected to the discharge port located
on top of the pump. The discharge hose should be adequately
supported to avoid stress on the pump.
For maximum water flow, the discharge hose should be kept as
short as possible, and with minimum elevation above the pump.
Remember as the length and/or height of the discharge hose is
increased, the flow of water will be reduced. Also any reduction
in the hose size, and any fittings such as valves or outlet nozzles,
will restrict the water flow.
To avoid back-siphonage when the pump is switched off, ensure
that the end of the discharge hose is installed above the water
level at the final discharge point.
When the pump is switched off, the water remaining in the hose
will run back through the pump. This can be avoided by placing
a non-return valve in the hose nearest the pump.
NEVER use this submersible pump to pump flammable liquids
or operate in a explosive or flammable environment.
Avoid using this pump in conditions where mud, grit, silt or other
debris are present. These conditions could cause blockage and
cause excessive pump wear.
DO NOT install the pump directly into an area where there is a
heavy buildup of mud, grit, silt or debris. If this condition is present,
install the pump on a platform before operating.
This pump must always be positioned on a platform in an upright
position. NEVER operate the pump by a suspended rope. To
prevent large solids from entering the pump, install a wire mesh
screen or similar barrier around the pump.
If the pump was used to pump water containing mud, silt, use
clean water to flush out the pump after each use.
DO NOT allow the pump to run dry, as this will damage the
pump. During maintenance, dry running is permissible but only
for a few seconds.
NEVER lift the pump by its electrical power cord. ALWAYS lift
the pump by its carrying handle or attach a rope to the carrying
handle.
A pump fully submerged pump in liquid will not freeze, unless
the liquid freezes. DO NOT allow a partially submerged pump to
freeze. The expansion of water freezing in the volute may crack
the pump, causing expensive repairs. If there is any danger of
the pump being subjected to freezing temperatures, Lift the pump
from water and allow it to drain thoroughly.
If the pump jams or the pump rotor locks for any reason,
disconnect the pump from the power source immediately.
Allowing the pump motor to cycle ON and OFF under an overload
condition can burn out the motor.
When replacement of nuts and bolts is required, use only
recommended parts as referenced in the parts section of this
manual. This pump uses
metric
threads. DO NOT use English
measurement threads.
Control Box Installation Warnings
Failure to follow the above referenced precautions could result
in serious injury or death! Replace pump cord immediately if
cord becomes damaged or severed. This pump must be installed
in accordance with National Electric Code ANSI/NFPA 70 so as
to prevent moisture from entering or accumulating with the boxes,
conduit bodies fittings, float housing or cable.
When installing the CB3 control box, the
possibility exists of
electrical
shock
,
electrocution
and possibly
death!
NEVER
have
untrained personnel perform the installation.
ALWAYS have qualified service personnel (licensed
electrician) perform the installation.
Explosion or Fire Hazard exists if this
pump is used with
flammable liquids
. DO
NOT use this pump with
flammable
liquids
. DO NOT install this pump in
hazardous locations as defined by the National Electrical
Code, ANSI/NFPA 70.
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