TC 120
682.98767.00 • 10/04/2018
32
Chapter 5: Startup and Operation
5-1 Introduction
The checklist below outlines start-up procedures for TC 120 water temperature control units.
This list assumes that installation information located in this manual has been read and
followed.
5-2 Startup Checklist
Check the shipping papers against the serial tag to make sure that
system size, type, and voltage is correct for the process under
control.
Check the transformer primary voltage connections to be sure they
are configured for the electrical power you are using. The voltage at
the main power connection must be within plus or minus ten percent
(±10%) of the voltage listed on the serial tag. Electrical connections
must conform to all applicable codes. Make sure that a qualified
electrician checks all electrical connections.
The safety thermostat is preset at the factory to 250ºF or 300ºF
(121ºC or 149ºC), depending on configuration. It trips at 265ºF or
315ºF (129ºC or 157ºC), depending on configuration.
The relief valve should be piped to an open, unrestricted drain.
TO PROCESS
,
FROM PROCESS
,
WATER IN
,
WATER OUT
,
and
MOLD PURGE
(if applicable) connections should be complete.
Only use components rated at a minimum of
150 psig and 250ºF (1,030 kPa/10.3 bar and 121ºC).
All outer panels must be in place
.
All external process valving should be set for proper operation of the
unit.
Cooling and/or makeup water between 16 psig and 55 psig (110
kPa/1.1 bar and 379 kPa/3.8 bar) must be available for the unit to
operate properly.
Connect the main power to the unit disconnect switch, and press the
START
switch to check for proper pump rotation direction as
described in Section 5-6 on Page 44. Pump rotation should be
clockwise, viewed from the
motor
end.
Check your work and proceed to the
Startup Procedure
section
on the following page