Daikin VRV IV+ Service Manual page 222

3 | Components
To perform a mechanical check of the compressor
Service manual
222
1 Open the compressor insulation.
2 Turn ON the power using the respective circuit breaker.
3 Start the unit operation via the central controller.
4 Listen to the compressor when it tries to operate. Judge if a mechanical lock is
present.
INFORMATION
If a mechanical lock is present, also check for the root cause of impurities in the
refrigerant causing mechanical lock of the compressor. See
4
procedures" [
A mechanical lock is present on the
compressor?
Yes
No
Prerequisite: First perform an auditive check of the compressor, see
"3.3.1 Checking procedures" [
Prerequisite: Stop the unit operation via the central controller.
1 Turn OFF the respective circuit breaker.
INFORMATION
For outdoor units ≥14 HP, the transportation stay for the compressor should be
removed. Otherwise vibration is not absorbed, which can lead to pipe crack. See
"3.3.2 Repair procedures" [
2 Check the compressor dampers and piping for any damage.
a
1 Damper
363].
Action
Replace the compressor, see
"3.3.2 Repair
Perform an mechanical check of the
compressor, see
procedures" [
4
221].
4 227].
a
"4.2.1 Checking
4
procedures" [ 227].
"3.3.1 Checking
4
221].
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05