A Checking And Starting Up The Unit - Mitsubishi Electric CLIMAVENETA BRAN2 0021M Installation, User And Maintenance Manual

CHECKING AND STARTING UP THE UNIT
PREPARING FOR FIRST START UP or restarting
after shutting down for long periods.
The unit must be started up for the first time by the Techni-
cal Service.
Before starting up the units, make sure that:
- All safety conditions have been respected;
- The unit is adequately fixed to the surface it rests on;
- Clearances have been respected
- Water connections have been carried out as indicated in
the instruction manual;
- The water circuit is filled and vented.
- The water valves are open;
- Electrical connections have been carried out correctly
- Voltage is within a tolerance of 10% of the rated voltage
for the unit;
- The unit is correctly earthed;
- All electrical connections are tight and all water connec-
tions have been carried out correctly.
The unit must be started up for the first time with standard
settings. Set Point values may be modified only after testing
has been completed.
Before starting up, power up the unit for at least two hours
by switching QF1 and QS1 ON (see "wiring diagram" and
the control panel in standby) so as to allow the oil in the
compressor sump to heat up.
ACTIVATING AND DEACTIVATING THE UNIT
- Move the contact on the on/off device SA1
ON
(if featured) to ON.
OFF
During this phase, if the following indications appear on
the display, follow the instructions:
- ER20 check the water flow-rate and the connection of
the flow switch.
- ER01 (three-phase heat pumps only): check the power
supply connection and if necessary reverse two phas-
es.
At every change of season, make sure the operating
conditions fall within the limits specified.
Make sure the current input of the compressor is less
than the maximum shown in the table of technical speci-
fications.
Make sure the voltage is within the established limits and
that, for three phase units, the unbalance between the
phases is less than 2%.
Check that the cover is closed again following the setting
procedure.
STARTING UP FOR THE FIRST TIME (after two hours)
Before starting the chiller:
ON
- Make sure the switch QF1 is in the OFF
position.
OFF
- Make sure the contact of the on/off device
SA1 (see the wiring diagram) is open (if fea-
tured).
- Close the door of the electrical panel.
ON
- Move the main unit switch QS1 to the ON
position.
- Move the switch QF1 (outside the unit) to
OFF
"ON".
- The icon with the off symbol (
panel, indicating power is connected.
For the position of internal components, see the dia-
grams.
2
3
To access the control panel, open the door:
- remove the screw 1;
- press the points 2 simultaneously and lift the door 3.
A
) lights up on the control
1
2
3
BRAT2 - BRAN2 EN 19