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5
CHECKS FOR THE FIRST START-UP
The unit must be started for the first time ONLY by authorized DAIKIN personnel.
The unit must absolutely not be put into operation, even if for a very short period, without having first meticulously checking
the following list in its entirety.
Table 9 - Checks to be performed before starting the unit
General
Yes
No
N/A
Check for external damage
Open all
isolation and / or shut-off valves
Verify that the unit is pressurized with refrigerant in all of its parts before making the connection to
the hydraulic circuit.
Check the oil level in the compressors
Control wells, thermometers, manometers, controls, etc. installed
Availability of at least 25% of the machine load for testing and control settings
Refrigerated water
Yes
No
N/A
Piping completion
Install the
water filter
(even when not supplied) at the inlet of the exchangers.
Install a flow switch
Water circuit filling, air bleeding
Pump installation, (rotation check), filter cleaning
Operation of the controls (three-way valve, bypass valve, damper, etc.)
Water circuit operation and flow balance
Check that all water sensors are correctly fixed in the heat exchange
Electrical circuit
Yes
No
N/A
Power cables connected to the electrical panel
Starter and wired interlocking of the pump
Electrical connection in compliance with local electrical regulations
Install a main switch upstream of the unit, the main fuses and, where required by the national laws
of the country of installation, a ground fault detector.
Connect the pump contact(s) in series with the contact of the flow switch(es), so that the unit can
operate only when the water pumps are running and the water flow is sufficient.
Provide the main voltage and check that it is within ± 10% of the classification given on the
nameplate.
Note
This list must be completed and sent to the local Daikin Service office at least two weeks before the
start date.