Conair Portable Chillers Series 1Water-Cooled (W1) and Air-Cooled Models (A1) withTIC Control

The Conair Portable Chiller uses a standard 100 ohm RTD to monitor process temperature. Disconnect the RTD leads and measure the resistance through the RTD. It should read 95 - 110 ohms. If it does not, the RTD is bad and needs replaced.

To replace the RTD:

1 Disconnect and lockout power to the chiller.

2 Disconnect the To Process tubing from the

To Process connection.

Fill/Drain valve

To Process connection

CHECKING AND REPLACING THE

RTD

3 Open the Drain/Fill valve and drain water

from the unit so the water level is lower that the RTD.

4 Open the side of the chiller.

5 Disconnect the RTD wiring from the

temperature controller in the top electrical panel. Refer to the wiring diagram.

6 Remove the RTD.

Loosen the compression nut to slide the RTD out of the evaporator.

7 Install the new RTD.

The new RTD should be inserted in the evaporator so that the tip is extended completely through the evaporator.

8 Wire the RTD to the controller

in the top electrical enclosure.

Always refer th the wiring diagrams that came with your chiller to locate specific electrical components.

RTD

UGH016/0500 Series 1 Portable Chillers, TIC Control TROUBLESHOOTING 6-17