Specifications

Printed in the U.S.A.

AE8-1368 R2

Appendix D

Dielectric Test (Hi-Pot), Megger, of Copeland Discus Compressors with CoreSense Diagnostics

Fitted with Sensors and Control Module. (4 & 6 D Models)

WARNING:

Performing Hi Voltage test to a compressor must be performed by an experienced and qualiﬁ ed

individual. Hi Voltage is dangerous and could result in severe damage to equipment, personal

injuries, or death. Follow all speciﬁ cations, local and national codes, and procedures when

performing Hi Voltage test.

Steps to follow:

1. Ensure power to compressor and other associated electrical devices is off.

2. Ensure that compressor body is grounded.

3. Ensure that compressor is not in a vacuum.

4. Inside the compressor terminal box, remove the (4) sensor leads from the sensor terminalboard.

(1 black and 3 orange) insulate the terminals on these 4 leads to prevent accidentalcontact with Hi

Voltage.

5. Short the (4) sensor terminal post and connect to a good ground.

6. Apply the proper Hi Pot Voltage from each of the motor power terminals to ground. Never applyHi

Pot Voltage across motor power terminals.

For compressors using line break protection, (2 & 3D), follow steps 1, 2, 3, & 6 above.