Mitsubishi Electric ECOV-X37VA Manuel D'installation page 40

10. Electrical wiring
10-1. Notes on wiring
• Install an earth leakage breaker.
Installation must be according to the applicable laws and regulations.
(Earth leakage breaker is required for all refrigerating appliances including show cases.)
• Do not wire at any place where dew may drop from suction parts.
• Ensure that no electric wires come into contact with high-temperature parts (compressor, gas cooler, discharge pipe) or the
edges of the unit.
• Wear protective gloves to prevent injury on wiring the unit.
• Do not route wires through insulation, such as pipes, to prevent overheat.
• Pass the electric wires through the rubber bush of the wiring through-hole of the control box and bind them over the rubber
bush.
Top view
• When fixing the rubber bush with a tie band, ensure that the notch on the back side of the rubber bush overlaps as shown in
<Good example> and no gap is present. Leaving a gap may allow rain, snow, and/or small animals to enter the unit, causing
malfunction.
Tie band
Overlapping of
rubber bush
<Back side of the rubber bush (Good example)>
• Install the transmission cable at least 5 cm away from the power cable to avoid electrical noise interference. (Do not place
them in the same conduit.)
• Before inspecting inside the control box, turn off the main power of the unit, wait at least 10 minutes, and check that the volt-
age of the electrolytic capacitor (main inverter circuit) is no greater than 20 VDC. The voltage check position is between pins
1 and 5 of the RYPN connector. Remove the fan motor connectors (CNFAN1 and CNFAN2). (See the pictures below for the
voltage check position and location of the connectors.)
Measure the voltage across pins 1 and 5.
• Before starting servicing, disconnect the outdoor fan connectors (CNFAN1 and CNFAN2).
When connecting and disconnecting connectors, make sure that the outdoor fan is not running and that the voltage of the
main circuit capacitor is no greater than 20 VDC.
If the outdoor fan rotates due to strong wind, the main circuit capacitor will be charged and pose a risk of electric shock.
Refer to the wiring nameplate for details.
When finishing servicing, connect the outdoor fan connectors (CNFAN1 and CNFAN2) as they were.
• When the ON/OFF switch (SW1) is ON, the components may still be carrying current even when the compressor is stopped.
WT09614X03_GB
Wire
Wire
Tie band
Rubber bush
Approx. 20 mm
Notch is open.
Notch
CNFAN1
CNFAN2
40
Notch
Rubber bush
(Ellipse)
Top view
<Back side of the rubber bush (Bad example)>
Notch