WTK-SVN001-EN
11
Wiring and System Inspection before
Test Run and Condenser Cleaning
Electric wire and ground wire must
comply with each country’s or regional’s
regulation.
1. Wiring
Importance
- Check the unit nameplate for
electrical rating. Make sure that
the wiring is according to local
codes and wiring system diagram.
- A separate power supply
disconnect and a circuit breaker
for overcurrent protection should
be provided in the external power
supply line.
- Always connect ground wire to
condensing unit every time to
prevent an electric shock in case
of an electric leakage.
- Electric wires shall not contact
to refrigerant pipes, compressor,
motor and the other moving parts.
- Manufacturer assumes no liability
for the problems caused by
unauthorized change in the
internal wiring.
- Should tighten up wire connection.
- Electric conductor parts must be
copper only.
2. Electric Wire Connection
- See wiring diagram on page 12
- Slipover electric wire at the end
- After connect electric wire,
check whether all screws are
firmly tightened
The electric wire connection between
outdoor and indoor unit should be
according to the wiring diagram.
To inspect system before test run.
After finished installing
air-conditioning, all system shall be
inspected before starting.
• Check that all brazings are correctly
made.
• Check that units are correctly
installed and there are no other
tools near or on top of the unit.
• Check the tubing and connections
for leak.
• Check that unit has a proper
ground wiring.
• Check for proper voltage and fuse
size.
• Check electrical wire size used is
as specified.
• Check all field wiring for tight
connection.
• Make sure that electrical wires
inside the unit do not contact to
refrigerant pipes.
• Turn on the unit, check the system
carefully.
Condenser Cleaning
After air-conditioning works for
a while, it may cause scales at the
surface of pipe in the condensing unit,
which may cause by cooling water
or rust inside cooling tower. Installer
can notice from the reduction of water
velocity, or the reduction of difference
of water temperature in and out,
or condensing temperature is higher
than normal.
Therefore, to maintain efficiency of
condenser, installer must clean up the
pipe’s inside surface of condenser to
prevent scales.
To clean up condenser with chemical
To clean up condenser with chemical
is one of the methods to wipe out
scales. To select proper chemical,
installer need to consult the water
treatment expert.
