Chapter 4 – Limit Controller
TestEquity 1007H Temperature Chamber Page 4-3
Protecting an Energized Test Sample
If your test sample is energized, it may be capable of raising the workspace temperature beyond
safe limits. This could occur if your test sample exceeds the live load rating of the chamber or if
the chamber’s refrigeration system fails.
This chamber has a set of safety contacts that can be used to remove power to your test sample if
the Limit Controller’s temperature limits are exceeded.
The safety contacts are rated as follows:
Resistive: 10 A, 250 VAC or 10 A, 28 VDC
Inductive: 7 A, 250 VAC
To access the safety contacts:
1. Turn the Main Disconnect Switch to the OFF position.
2. Remove the lower door retaining screw located on the right side. Open the lower door.
3. Locate the Terminal Strip on the electrical sub panel. Connections to the safety contacts are
at terminals A1 and A2.
Figure 4-2 – Location of Safety Contact Connections on the Electrical Sub Panel
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