SystemAir X-MUB-CAV/VAV 100 630EC-20, Installation And Operating Instructions Manual

Page: 42 / 145

7 Electrical connection
The electrical connection picture can be seen on the motor console.
NOTE
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The motors contain triple posistors. More than two posistor chains may not be switched in series, as this can lead
to undefined cut-outs.
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Maximum check voltage of the posistors, 2.5 V.
WARNING
Hazard from electrical voltage
›
Electrical connection only by trained electricians or trained and instructed qualified personnel.
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Electrical connection in harmony with the valid directives.
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Avoid penetration of water into the terminal box.
›
Pay attention to the 5 rules of electrical engineering:
–
clear (all-pole separation of an electrical system from live parts)
–
secure against switching on again
–
establish freedom from voltage
–
earth and short-circuit
–
cover or fence off neighbouring live parts.
"
Connect the electrical connection according to the circuit diagram on the motor console.
CARE
Property damage as a result of overheating of the motor
»
The motor can overheat and be destroyed if the thermo-contacts have not been functionally connected.
»
Always connect thermo-contacts to a protective motor switching device!
"
Connect the thermo-contacts/posistor connections to a protective motor switching device.
"
For plastic terminal boxes, do not use any gland bolt connections of metal.
"
Lay the mains feed line from the outside through a bore.
"
Seal the bore in order to guarantee the IP 54 protection class.
"
Seal the bore against water penetration. Depending on the kind of cable duct, provide water drainage bores or use a sealing putty.
"
Additionally seal the lid screw connections of plastic terminal boxes with sealing putty.
7.1 Secure 3-phase motors
"
Avoiding two-phase running:
In 3-phase motors, use an all-pole C- or K safety cut-out (current consumption, see name plate).
7.2 Connect temperature monitor
"
If a temperature monitor is used, it must be connected to a triggering device and/or a motor-protection device.
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