Midea MGBT-D25W/DN1, Руководство пользователя

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R410a tropical air-cooled scroll chiller unit 60Hz MCAC-ATSM-2014-09
148 Installation
5.3 Trial run
1) Start up the controller and check whether the unit
displays a fault code. If a fault occurs, remove the
fault first, and start the unit according to the
operating method in the “unit control instruction”,
after determining that there is no fault existing in the
unit.
2) Conduct trial run for 30 min. When the influent
and effluent temperature becomes stabilized, adjust
the water flow to nominal value, to ensure normal
operation of the unit.
3) After the unit is shut down, it should be put into
operation 10 min later, to avoid frequent start-up of
the unit. In the end, check whether the unit meets
the requirements according to the contents in upper
table.
CAUTION
The unit can control start-up and shut-down of the
unit, so when the water system is flushed, the
operation of the pump should not be controlled by
the unit.
Do not start up the unit before draining the water
system completely.
The target flow controller must be installed correctly.
The wires of the target flow controller must be
connected according to electric control schematic
diagram, or the faults caused by water breaking
while the unit is in operation should be the user’s
responsibility.
Do not re-start the unit within 10 min after the unit is
shut down during trial run.
When the unit operates frequently, do not cut off the
power supply after the unit is shut down; otherwise
the compressor cannot be heated, thus leading to
damages.
If the unit is not in service for a long time, the power
supply needs to be cut off, the unit should be
connected to the power supply 12 hours prior to
re-starting of the unit, to pre-heat the compressor.
. Trail run and operation data
Temperature The table below contains the measurable temperatures.
Measurement Value
Outlet water temperature
Standard cooling :5~17ºC
Standard heating:45~50 ºC
Outdoor temperature
Standard cooling :10~52ºC
Standard heating:-10~21 ºC
Voltage Current The table below contains the measurable voltage.
Measurement Value
Power supply voltage Within
±
10% of the rated voltage.
Phase imbalance Within
±
2% of the rated voltage.
Control circuit voltage
220V AC for main electromagnetic switches,
220V AC for controller.
Current
The table below contains the currents and fuses.
Unit Maximum current(A) Fuse
MGBT-F25W/DN1 43.7 50
MGBT-D25W/DN1 39.9 50
MGBT-F30W/DN1 43.7 50
MGBT-D30W/DN1 39.9 50
MGBT-F60W/DN1 87.2 150
MGBT-F120W/DN1 164.7 300
MGBT-F180W/DN1 218.2 350