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10 - OPERATION
10.1 - First commissioning
■
Read the guides for commissioning any accessories very carefully and follow all advice.
■
Check that the supply voltage corresponds to that given on the data plate.
■
Retighten the connections of the electrics box.
■
Switch the unit on and check that all the fans are turning in the correct direction (direction of rotation shown on the labels).
In the event of abnormal noise coming from the fan motor assemblies, immediately switch off the power supply and contact us.
■
Ensure that the hydraulic circuit(s) are clean.
■
Start charging by bleeding the air remaining in the circuit using the vents provided in the top section.
■
Start increasing the pressure, then check that the pipe connections are fully sealed.
10.2 - In the event of faults
Please contact us if you require any help. Before contacting your CIAT agency, please check the following points:
-
Are all fans turning in the correct direction? (check this against the labels)
-
Is the supply voltage correct?
-
Are the motors running at the correct speed? (check the input current)
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Has the fluid direction been reversed during connection of the coil?
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Are the fins of the coil clogged?
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Are there any issues relating to air recycling or a poor air supply?
10.3 - Recommendations for use
Scaling and corrosion have a very negative effect on the operation and service life of the units. Therefore, only use treated
water or authorised fluids (check the compatibility of any additives with the drycooler's materials).
11 - AC FAN MOTOR ASSEMBLIES
11.1 - AC motor protection
■
All the motors are equipped with a thermal cut-out, which is available in the motor terminal box. Wiring for the thermal cut-out is
optional
11.2 - Fan with AC motor (3-ph 230 V/400 V 50 Hz)
■ On a 3-ph/400 V/50 Hz network, the motors have 2 rotation speeds, via star (Y) or delta connection (Δ).
-
Low speed with Y connection
-
High speed with Δ connection
■ On a 3-ph/230 V/50 Hz electrical network, the motors have 1 rotation speed via delta connection (Δ):
-
Low speed with Δ connection
11.3 - Fan with AC motor 3-ph 208 V and 3-ph/400 V to 480 V 60 Hz
■ On a 3-ph 208 V/60 Hz and 230 V/50 Hz electrical network, the motors have 1 rotation speed via delta connection (Δ).
■
On a 3-ph/400 to 480 V/60 Hz electrical network, the motors have 1 rotation speed via star connection (Y):
Impeller diameter
mm
910
800
Motor type
B9A
B9B
B9C
B8A
B8B
B8C
B8D
3-ph 208 V/60 Hz supply
Δ
Δ
Δ
-
-
Δ
Δ
3-ph/400 to 480 V/60 Hz supply
Y
Y
Y
Y
Y
Y
Y
Speed(s)
rpm
1100
1000
800
1100
1050
840
520
Weight of im motor
kg
28
25
25
23
23
19
19
Weight of fan motor assembly
kg
69
66
66
51
51
47
47
Min. room temperature for storage
°C
-40
Min. operating temperature
°C
-40
Insulation class
F
Sealing class
IP 54
Number of starts
Max. 50 / hour
11
Содержание 09PE
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