Daikin Air-Cooled Split System Condensing Units RCS 092D

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

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.;

The steps below are necessary only if the unit has been started.

Each circuit is properly pumped down.

All the refrigerant service valves on each circuit are closed.

Valves are tagged as a warning for the technician who restarts the units.

Sign off on the cooling circuits maintenance

Open all electrical disconnects and check all power wiring connections.

Start at the power block and check all connections through all components.

Check connections 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.

Is the short circuit indicator functional?

Are the MMP trip points factory set?

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

Select the motor service factor

To reset a tripped MMP, clear the trip by rotating the knob counterclockwise to the OFF position; then rotate knob clockwise to the ON position.

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