Sterlco SEU Series Economical Water TCU - Manual (Page 29)

WTR1-600 Chapter 5: Operation 29 of 42
Chapter 5: Operation
5-1 Introduction
The checklist below outlines start-up procedures for Economical Series 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
connections should be complete.
Only use components rated at a minimum of
150 psig and 250°F (1,034.25 kPa/10.34 bars 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 (110.32 kPa/1.1 bars and 379.2
kPa/3.79 bars) 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 42. Pump rotation should be
clockwise, viewed from the motor end.
Check your work and proceed to the Startup Procedure section on the following page.