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EH222 and Condensing Unit
Remote Low Side Cuber Service Manual
Condenser Coil
The condenser's coil is micro-channel aluminum and may be replaced in the field without changing the
condensing unit. The replacement coil ships with attached stainless steel stubs.
To replace it:
1. Recover refrigerant
2. Disconnect electrical power.
3. Remove top panel.
4. Remove fan blade, fan motor and fan motor brackets.
5. Disconnect tubing to condenser coil.
6. Remove fasteners that secure coil to unit and remove coil from machine.
7. Place new coil in position and secure with original fasteners.
8. Attach dry nitrogen source to system and bleed nitrogen at 1 PSIG while brazing.
9. Braze new coil stubs to unit tubing. Be sure to NOT overheat the stubs:
•
Apply heat to the copper tubing first and move the flame toward the stub.
•
Heat the copper tubing for approximately 10 to 15 seconds then direct the heat to the stub.
•
Heat the stub for 2 to 5 seconds and apply 15% silver solder to joint (do not use
•
Do not attempt to fill the joint with solder, solder will draw into joint.
10. Shut off and remove nitrogen source.
11. Install new dryer, evacuate system and recharge with nameplate charge.
12. Return fan motor, blade, brackets and top panel to unit, reconnect power, restart machine, check operation.
August 2013
Page 45
flux).
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