Temptek G-500 Series, Instruction Manual

Page: 21 / 64

Temperature Control Unit : VTO Series with G500 Series Instrument
Page: 21
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Email: service@Temptek.com
the sight glass is 1/2 full; for units up from 27 to 48 KW fill until the sight glass
is completely full. When the pump is first started, the oil level will drop as the
heater tank and process are filled. After which, the operator may need to top off
as necessary to maintain oil level near the bottom of the sight glass. Check the
system for any leaks and repair if necessary.
B. Electric Motor Phasing (Pump Rotation)
1. The operator must determine the electric motor is phased correctly. This is done
by visually inspecting the rotation of the motor shaft as outlined below. Incorrect
phasing of the unit results in poor operation and eventual damage.
a. Supply electrical power to the unit by engaging the unit’s disconnect
switch. Once the correct voltage is supplied to the unit, the Power light
on the display will illuminate.
b. Open the hinged electrical cabinet panel
cover. Note that the electrical power
is engaged at this point and caution
must be observed while the electrical
supply is engaged and the cabinet
panel is open.
c. Locate the electric motor and identify
the motor shaft inside the electric motor
housing. The motor shaft can be seen
through the vent slots in the motor
housing or by removing the shaft cover.
d. Toggle the On / Off buttons. This will
cycle the motor “on” and then “off”.
e. Observe the motor shaft as it slows to
a stop to identify the rotation. Correct
rotation is “clockwise”, when viewed
from the rear of the motor. Incorrect
rotation is “counter-clockwise” when
viewed from the rear of the motor. If
the shaft does not rotate when the unit
is started, the operator must identify
the cause as outlined in this manual’s
troubleshooting and repair section.
f. If the unit is phased correctly, continue with the start up procedure at step
C. If the unit is phased incorrect, continue with step 2.
WARNING: Electrical power is engaged and caution should be employed while the cabinet is
open.
Remove shaft cover to view the
motor shaft.
Correct rotation is clockwise when
viewed from the rear of the motor.