D-EIMWC01008-16_03EN - 21/35
5.8
Before Starting
The unit should not be started, not even for a very short period of time, before the following pre-
commissioning checklist is filled out completely.
tick
when checked
standard steps to go through before starting the unit
1
Check for external damage.
2
Open all
shut-off valves
.
3
Install
main fuses
,
earth leak detector and main switch
. Recommended fuses: aM
according to IEC standard 269-2.
Refer to the wiring diagram for size.
4
Supply the main voltage and check if it is within the allowable ±10% limits of the
nameplate rating.
The electrical
main power supply
should be arranged so, that it can be switched on or
off independently of the electrical supply to other items of the plant and equipment in
general.
Refer to the wiring diagram, terminals L1, L2 and L3.
5
Supply water to the evaporator and verify if
waterflow
is within the limits as given in the
table under “Water charge, flow and quality”.
6
The piping must be completely
purged
. See also chapter “Preparing, checking and
connecting the water circuit”.
7
Connect the
pump contact(s)
in series with the contact of the flow switch(es), so that
the unit can only come in operation when the water pumps are running, and the water
flow is sufficient.
8
Check the
oil level
in the compressors.
9
Install the
filter kit(s) supplied with the unit
in front of the evaporator(s) water inlet.
10
Check that all the
water sensors
are correctly fixed into the heat exchanger (see also
the sticker attached to the heat exchanger).
NOTE
It is necessary to read the operation manual delivered with the unit before operating the
unit.
It will contribute to understand the operation of the unit and its electronic controller.
Close all switch box doors after installation of the unit.
