Daikin Air-Cooled Split System Condensing Units RCS 035D

The condenser coils are an all-aluminum design including the connections, micro-channels, fins (an oven brazing process brazes the fins to the micro-channel flat tube), and headers.

Connecting the Condenser Coil to Copper Tubing

CAUTION! Potential equipment damage. If a standard copper brazing process is performed at this joint, the process will damage the aluminum connection.

If a leak is found at a copper-aluminum joint, it is recommended that the entire microchannel coil module be replaced. Do not attempt to repair the copper-aluminum joint on site.

Micro-Channel aluminum coil cleaning recommendations

Any detergent left on the coil surfaces will promote corrosion.

Sign off on the Aluminium Coil Maintenance

When replacing an individual scroll compressor on tandem or trio assemblies, three refrigerant lines must be disconnected and re-assembled:

a. This line (Figure 23) contains the oil sight glass.

b. This line connects to each compressor at “rota-lock” fittings (Figure 24).

c. This line should be disconnected and re-used

a. This is the largest diameter piping.

b. This line is brazed to each compressor.

Open all electrical disconnects and check all power wiring connections.

Start at the power block and check all connections through all components to and including the compressor terminals.

These should be checked again after 3 months of operation and at least annually thereafter.;

Open all electrical disconnects and check all power wiring connections.

Start at the power block and check all connections through all components to and including the compressor terminals.

These should be checked again after 3 months of operation and at least annually thereafter.

Sign off on the electrical check

Warning: Only authorized personnel should perform this procedure

Check if the short circuit indicator is functional

If the motor ampacity changes or the MMP is replaced, adjust the MMP trip points as follows:

Select the motor service factor

Rotate the arrow on the dial to correspond to the motor FLA or 0.9 times the motor FLA depending on the service factor

Check if the MMP has been reset correctly

Warning: If an overload or a fault current interruption occurs, check circuits to determine the cause of the interruption

Check if the controller is damaged