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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 l
3-53
Connecting Main Power to the HTC
(Models HTC 30, 60, 90 and 120)
The electrical connection for the HTC models 30, 60, 90 and 120 only consists of
bringing power to the control center. The incoming power should match the rated
nameplate power required on the serial tag on the control 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 name-
plate 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.
IMPORTANT:
Always refer
to the wiring diagrams that
came with your HTC before
making electrical connec-
tions.
ON
O
O
FF
(continued)
Summary of Contents for HTC 120
Page 10: ...viii l Table of Contents ...
Page 30: ...2 14 l Description ...
Page 35: ...Installation General Installation General l 3 5 3 I n s t a l l a t i o n ...
Page 65: ...Installation Hard Piping Kits Installation Piping Hoses l 3 35 3 I n s t a l l a t i o n ...
Page 80: ...3 50 l Installation Piping Hoses ...
Page 88: ...3 58 l Installation Piping Hoses ...
Page 92: ...3 62 l Installation Conveying Lines ...
Page 93: ...Installation Water Lines 3 I n s t a l l a t i o n Installation Water Lines l 3 63 ...
Page 124: ...3 94 l Installation Gas Piping and Exhaust Flue ...
Page 125: ...Installation Testing 3 I n s t a l l a t i o n Installation Testing l 3 95 ...
Page 250: ...4 108 l Operation ...
Page 286: ...5 36 l Maintenance ...