Conair HTC 120, Руководство пользователя

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Connecting Main Power to the HTC
(continued)
(Models HTC 180 and 270)
The electrical connection consists of bringing power into the control center and
wiring the power from the control center to the heater assembly. The incoming
power should match the rated nameplate power required on the serial tag on the con-
trol center.
See Description section entitled, Specifications: Hopper Temperature
Controller (HTC). This power should be clean and have a voltage variation of no
more than +/- 5% of the nameplate voltage. Unless the actual voltage is equal to the
nameplate voltage, the actual kW output of the HTC will vary slightly. The output
varies with the square of the voltage difference.
CAUTION:
Always disconnect and lock out the main power sources before making
electrical connections. Electrical connections should be made only by a qualified
technician.
CAUTION: Check the disconnect with a volt meter to ensure that the power is off.
1
Disconnect and lock out the main power before making electrical connec-
tions.
Electrical connections should be made only by a qualified technician.
2
Turn the disconnect dial on the control center door to the Off or “O”
position.
Turn the captive screw and swing the control center door open.
3
Insert the main power cable through a knockout in the side of the control center.
Secure the power cable with an appropriately-sized strain relief or use customer-
supplied conduit. Verify that the incoming power is securely attached to the con-
trol center and there is no strain on the incoming power.
4
Connect the power wires
to the three terminals at the top of the power disconnect
holder.
5
Connect the ground wire to the ground lug.
NOTE:
The connection between the heater and control center should be made with proper-
ly-sized conductors and protected with appropriate conduit (customer supplied). The rout-
ing should be neat and away from potential mechanical damage. The terminations should
be landed on the terminals in the control center and heater junction area. These termina-
tions should be regularly checked to prevent loosening and shorting to ground.
3-54
l I n s t a l l a t i o n - M a i n Po w e r C o n n e c t i o n s
✐
IMPORTANT: Always refer
to the wiring diagrams that
came with your HTC before
making electrical connec-
tions.
ON
O
O
FF
(continued)