Checking Internal Contacts

To check internal contacts:

1. With the power off, disconnect the quick connect from the COM, NO and NC relay terminals (figure below).

2. Turn the power back on.

3. Using an Ohm meter, check that the resistance between the COM and NO is zero (0), and the contact between COM and NC is open.

4. Turn the power OFF, and check that the contact between the COM and NO is open, and check that the resistance between COM and NC is zero (0).

5. Reconnect the quick connect to COM, NO and NC relay terminals and turn the power back on.

Testing internal contacts