Temptek PTK Series, Инструкция по эксплуатации

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PTK Series Polyethylene Pump Tank Station with Checkmate Control System
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TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Email: service@Temptek.com
4. Open as many process connection valves as possible to establish a water flow
path.
D. Motor Rotation for Process Pump.
1. Activate the electrical power to the unit.
2. Turn the process pump ‘on’ momentarily and then ‘off’ again. Observe the shaft of
each motor. As the shaft slows to a stop, its rotation can be determined. Correct
rotation is clockwise when viewed from the rear of the motor.
3. If rotation for a motor is incorrect, disconnect power and reverse any two wires at
the motor’s starter block.
E. Motor Rotation For Tower / Evaporator Pump and Tower Fan
1. Activate the electrical power to the unit.
2. For tower system applications. It may be necessary to lower the setpoint on
the Checkmate control instrument.
3. Turn the pump or fan ‘on’ momentarily, then ‘off’ again. Observe the shaft of the
motor. As the shaft slows to a stop, its rotation can be determined. For pump
motors, correct rotation is clockwise when viewed from the rear of the motor.
As for the cooling towers, correct rotation is counter clockwise or air should be
drawn from the bottom of the tower and out the top. For other tower cells, check
the tower cell manual for instructions on correct rotation.
4. If rotation for a motor is incorrect, disconnect power and reverse any two wires at
the motor’s starter block.
F. Pump Flow Adjustments
1. When starting a centrifugal pump, it is important to properly set the flow rate to
prevent overloading of the pump motor. The following example is the start up
procedure for a two pump system.
2. Fully open the suction valves to the process and tower/evaporator pump. Note:
never allow the pumps to operate ‘dry’, as this can cause shaft seal failure.
3. Close the discharge valves of the process and tower/evaporator pumps. Note:
a centrifugal pump can be operated with no flow without damage, although this
should not be for an extended period of time. Internal friction will cause the water
in the pump case to overheat.
4. Place an amp meter on one leg of the process pump wires at the motor starter.
Start the motor. Slowly open the discharge valve, allowing the process piping to
fill with water. After flow is established, continue to open the discharge valve. The
amp draw will increase as the flow increase. Once the run-load amp rating, as
listed on the motor data tag, is reached, leave the valve in that position.