Temptek G-500 Series, Instruction Manual

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Temperature Control Unit : VTO Series with G500 Series Instrument
Page: 51
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Email: service@Temptek.com
C. PUMP MOTOR CONTROLLER. The electrical motor is engaged when the motor starter
contacts close, on command by the instrument.
D. HEATER CONTACTOR. The standard heater contactor is a mechanical style contactor.
On command from the instrument, the contactor will close and voltage will be supplied to
the heater. The contactor use should be monitored and the contactor should be replaced
as needed based on duty cycle. Some units are provided with a solid state contactor
rather than the standard mechanical contactor.
E. PRESSURE SWITCH. The water pressure switch will close when sufficient pressure is
supplied to the unit (20 psi). A closed pressure switch will consent the control circuit to the
instrument controller to allow process operations.