Air Techniques AirStar AS120, Инструкция по установке и эксплуатации

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Air Techniques, Inc.
Page 14
10 Electrical Connection
The circuit diagram can be found in the control unit�
10�1 Electrical connection and safety
• Electrical connections should only be carried out by a
suitably qualified electrician�
• When using optional 400 to 480v transformer
(E5123), connect transformer per manufacturer’s
instructions�
• Observe all technical rules and regulations concerning
the set up of low voltage equipment in rooms used for
medical purposes�
• Before initial start-up compare the local voltage and
electrical frequency with the ratings on the model
identification plate�
• Only connect the units correctly to a fixed appliance
connection box with terminal strips or directly to the
electricity supply�
• Lay all supply lines so that they are protected from any
possible mechanical damage (e�g� away from sharp
edges, pinching, hot surfaces etc�)�
10�2 Connecting modules
• Lay the connection lines from the control unit to the in-
dividual compressor aggregates and secure with strain
reliefs� Note coding (e�g� M1) carefully�
M1
1
2
• Secure the connections to earth ground at the marked
points of both modules�
10�3 Connection line dimensions
The following information on connecting electrical
lines is based on US and Canada standards�
Always observe the relevant national standards
and local rules and regulations�
Diameter of the connections
The diameter of the conductors is dependent on the cur-
rent consumption, length of supply lines and the ambient
temperatures on site�
Information on current consumption and minimum cable
cross-sections can be found under 4 Technical data�
The electrical connection can be 480 VAC, 3 phase
permanent or flexible cable (S-Type)�
Connect per national standards and in accordance with
all local codes and regulations
10�4 Match motor protection switch to external
power frequency
The motor protection switch settings depend on the elec-
trical power frequency:
- at 60 Hz: 12 A
• All motor protection switches should be set the same�
8
1
2
3
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5
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7
8
9
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11
1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8
1 2 3
10
12
14
16A
0
I
60 Hz = 12 A
10�5 Connect control unit to the mains power
supply
• Ensure circuit is fitted with an all pole circuit breaker
(all-pole switch or all-pole breaker for line protection)�
• Pull the five strand cable through the strain relief at the
control unit�
• Connect the wires to terminals L1, L2, L3, N and PE�
• Secure the strain relief in the control unit�
2
3
1
8
1
2
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4
5
6
7
8
9
10
11
1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8
1 2 3
PE PE
L1 L1 L2
L2 L3 L3 N N