Trial Run - Midea Aqua Tempto Power Series Manual

Aqua tempo power series tropical air-cooled scroll chiller 50Hz

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 temp. 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.
.Trail run and operation data
Temp.
Voltage Current
Current
184
The table below contains the measurable temp.
Measurement
Outlet water temp.
Outdoor temp.
The table below contains the measurable voltage.
Measurement
Power supply voltage
Phase imbalance
Control circuit voltage
The table below contains the currents and fuses.
Model
MGBT-F25W/RN1
MGBT-D25W/RN1
MGBT-F30W/RN1
MGBT-D30W/RN1
MGBT-F60W/RN1
MGBT-D60W/RN1
MGBT-F120W/RN1
MGBT-F180W/RN1
MGBT-F250W/RN1
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 water flow switch must be installed correctly.
The wires of the water flow switch 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 is used frequently, do not cut off the
power supply after the unit is shut down; otherwise
the compressor cannot be heated, thus leading to its
damages.
If the unit is not in service for a long time, and 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.
Standard cooling :5~17º C
Standard heating:45~50 º C
Standard cooling :10~52º C
Standard heating:-10~21 º C
Within ±10% of the rated voltage.
Within ±2% of the rated voltage.
220V AC for main electromagnetic switches,
220V AC for controller.
Maximum current(A)
MCAC-ATSM-2014-09
Value
Value
Fuse
50 36
50 36
50 36
50 36
125 100
150 100
250 200
350 300
450 300