High-Potential Testing - Emerson Copeland Scroll ZR24KRE Application Manuallines

Assembly of the discharge line thermostat
▪ Install the discharge line thermostat on the
discharge tube 120 mm from top cap.
▪ Snap the retainer clip over the tube and onto
the thermostat.
▪ The thermostat should be placed on the
discharge tube so that its body is in upward
position on a horizontal tube installation.
▪ Ensure that the thermostat is not tilted.
▪ The wire must not be in contact with the top
cap of the compressor or the discharge tube.
Care should be taken to route wires so that
they do not come into contact with sharp
objects.
▪ To avoid any impact on tripping temperature
by the ambient, the discharge line thermostat
must be insulated.
▪ Wrap thermal insulation around the pipe left
and right of the thermostat and secure it with
plastic straps.
▪ Wrap a second layer of insulation around the
first one and around the thermostat, and
secure it with plastic straps.

High-potential testing

4.5
WARNING
Conductor cables! Electrical shock! Shut off power supply before high-
potential testing.
CAUTION
Internal arcing! Motor destruction! Do not carry out high-voltage or
insulation tests if the compressor housing is under vacuum.
Emerson subjects all Scroll compressors to a high-voltage test after final assembly. Each motor
phase winding is tested, according to EN 0530 or VDE 0530 part 1, at a differential voltage of
1000V plus twice the nominal voltage. Since high-voltage tests lead to premature ageing of the
winding insulation further additional tests of that nature are not recommended.
If it has to be done for any reason, a lower voltage must be used. Disconnect all electronic devices,
eg, motor protection module, fan speed control, etc prior to testing.
C6.2.41/0219/E 17