Electrical - Daikin FXMA50A5VEB Installer And User Manual

2.2.4 Electrical

FXMA-A
VRV system air conditioner
4P680920-1 – 2022.01
▪ ONLY use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪ Charge the liquid refrigerant as follows:
If
A siphon tube is present
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
A siphon tube is NOT present
▪ Open refrigerant cylinders slowly.
▪ Charge the refrigerant in liquid form. Adding it in gas form may prevent normal
operation.
CAUTION
When the refrigerant charging procedure is done or when pausing, close the valve of
the refrigerant tank immediately. If the valve is NOT closed immediately, remaining
pressure might charge additional refrigerant. Possible consequence: Incorrect
refrigerant amount.
DANGER: RISK OF ELECTROCUTION
▪
Turn OFF all power supply before removing the switch box cover, connecting
electrical wiring or touching electrical parts.
▪
Disconnect the power supply for more than 10 minutes, and measure the voltage
at the terminals of main circuit capacitors or electrical components before
servicing. The voltage MUST be less than 50 V DC before you can touch electrical
components. For the location of the terminals, see the wiring diagram.
▪
Do NOT touch electrical components with wet hands.
▪
Do NOT leave the unit unattended when the service cover is removed.
WARNING
If NOT factory installed, a main switch or other means for disconnection, having a
contact separation in all poles providing full disconnection under overvoltage
category III condition, MUST be installed in the fixed wiring.
2 General safety precautions
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Then
Charge with the cylinder upright.
Charge with the cylinder upside down.
Installer and user reference guide
9