Reactor; Checking Procedures - Daikin VRV IV+ Service Manual

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To remove the side plate
a
a
a
a Screw
b Side plate
13 Loosen and remove the 7 screws (a) that fix the side plate
assembly.
14 Lift the side plate assembly (b) and remove it from the unit.
To remove the upper side plate
a
a
a
a Screw
b Upper side plate
15 Loosen and remove the 6 screws (a) that fix the upper side
plate assembly.
16 Lift the upper side plate assembly (b) and remove it from the
unit.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
a
b
a
a
a
a a
b
a
To remove the top plate
b a a a b
a Screw
b Top plate
17 Loosen and remove the 12 screws (a) that fix the top plate
assembly.
18 Remove the top plate (b) from the unit.
3.14

Reactor

3.14.1

Checking procedures

To perform an electrical check of the reactor
Prerequisite: Stop the unit operation (via the user interface, central
controller, operation switch, ...).
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
page 118.
2 Access the switch box, see
c c
c a a c
a Screw
b Faston connector
c Screw
3 Check the connections of the reactor on the inverter PCB('s),
see "6.2 Wiring diagram" on
4 Remove the wiring or Faston connectors from the reactor.
5 Using a megger device of at least 500 V DC, check the
insulation resistance. Make sure there is no earth leakage.
Is the measured insulation
resistance correct?
Yes
No
3 Components
a a a
"3.13 Plate work" on
"3.13 Plate work" on page 118.
c c
a
c b b c
page 146.
Action
Continue with the next step.
Replace the reactor, see
"3.14.2 Repair procedures" on
page 124.
Service manual
123