Temptek G-500 Series, Instruction Manual

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Temperature Control Unit : VTO Series with G500 Series Instrument
Page: 50
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Email: service@Temptek.com
6.1 MECHANICAL SYSTEM
A. MOTOR/PUMP ASSEMBLY. The unit pump is a multi-component assembly serving to
circulate water through the process system. The pump will increase the system pressure
between 35 - 50 PSI over the plant water supply pressure. The pump is driven by an
electrical motor.
1. Pump casing. The pump casing is an exclusive design. The casing is cast of
iron and flanged to accept the heater/discharge and cooling tanks. The casing is
the support element in the pump/motor assembly and is secured to the unit base.
2. Pump adapter. The pump adapter is the mating element between the pump
casing the electric motor. The adapter is machined to accept the pump seal
flush line. The stationary pump seal member is set in the seal cavity of the pump
adapter.
3. Electrical motor. The electric motor is a dual voltage, 3 phase, ODP motor. The
motor serves to turn the pump impeller creating process flow.
4. Impeller. The impeller is custom designed for the unit and creates the higher flow
(gpm) from standard HP ratings.
5. Pump Seal. The pump seal prevents water leakage from the pump adapter.
The seal is made up of three items: The stationary member (seated in the seal
cavity), the rotating member (placed on the motor shaft) and the tension spring.
B. HEATER. The heater is a single voltage, flange mounted immersion heater set in the
pump discharge cylinder. The heater elements have a stainless steel sheath. Electrical
supply to the heater is provided via a mechanical contactor.
C. PRESSURE RELIEF VALVE. The cooling water pressure relief valve is a 150 psi relief
valve serving to discharge excessive cooling water pressure to atmosphere. The valve
can be manually activated by lifting the actuating lever. Use caution. Be sure that the
system is cool or high temperature water or stream may be released.
D. COOLING VALVE. Found on units with the cooling heat exchanger, the cooling valve is
a microprocessor controlled solenoid valve use to provide cooling to the process fluid by
allowing cooling water to enter the heat exchanger.
E. PRESSURE GAUGE. The pressure gauge displays the system fluid pressure.
6.2 ELECTRICAL SYSTEM
A. INSTRUMENT. The control instrument is designed specifically for operating fluid
circulating temperature control units. The microprocessor based control instrument
operates all the functions of the unit including cycling the heater and cooling valve for
temperature control.
B. TRANSFORMER. The transformer supplies 110 volts to the controlling instrument.