Thrush TV2g In-Line Centrifugal Pumps - Manual

OPERATING AND MAINTENANCE INFORMATION
FOR TV2g IN-LINE CENTRIFUGAL PUMP
INSTALLATION
LOCATION
The pump should be located as close to the liquid source as possible so that the suction line can
be short and direct. It should be located in a clean, open area, where it is easily accessible for
inspection, lubrication and repair. Pumps installed in dark, dirty areas or in cramped locations are
often neglected which can result in premature failure of both the pump and driver.
Adequate provisions should be made for electrical wiring to the pump motor. A switch and
overload protection should be installed near the pump unless it is impractical. The flexible
electrical conduit should be connected to the motor in such a way as to preclude the possibility of
moisture entering the conduit or the motor and causing short circuits.
MOUNTING
Thrush In-line pumps conserve floor space, simplify piping, and can be serviced without
disconnecting piping. They are designed to be installed in either the vertical or horizontal
position. The proper installation of these pumps is to install them as “a part of the piping”. The
pumps must be free to “travel” with the expansion and contraction of the piping. In-line
installation eliminates the problems normally encountered in aligning piping to a base mounted
unit. SUPPORT OF THE TV2g SERIES PUMPS SHOULD ALWAYS BE CONNECTED TO THE
PIPING RATHER THAN TO THE PUMP CASING. (See Figure 2). The line-mounted feature
eliminates the need for installing flexible pipe connectors at either the pump suction or discharge.
Isolating valves should be installed at both the pump suction and discharge to permit servicing of
the pump without draining the entire system. Make certain the space above the pump is sufficient
to give clearance for lifting the pump assembly from the casing. Also, the space around the pump
should be large enough for general accessibility and ventilation. The same criteria and formula
for selecting piping supports are used with the additional consideration that the weight of the
pump is concentrated at one point in the piping.