Huawei NetCol5000-A User Manual page 152

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Figure 5-4 Breakers
(1) Compressor circuit
breaker QF3
(4) General circuit breaker
QF1
(7) Condensate pump circuit
breaker QF9
5.3.3 Power-On
Context
All circuit breakers are set to OFF before delivery. If the preset status has been changed,
restore the preset status before any operation.
Procedure
Step 1 Subsequently switch on main control board power circuit breaker QF8 and general circuit
breaker QF1.
Step 2 Measure the controller loop voltage by using a voltmeter, as shown in
the control voltage is within the range of 24 V AC (tolerance ± 10%). If the voltage is not
within the range, check whether the voltage jumper matches the mains, or whether the current
input voltage meets normal voltage requirements.
Issue 13 (2019-01-15)
Alarms and LCD buzzer noise may occur if the compressor and fan circuit breakers are not switched on.
The alarms and buzzer noise disappear when the switches are closed.
Copyright © Huawei Technologies Co., Ltd.
(2) Electric heater
circuit breaker QF4
(5) Fan circuit breaker
QF6
5 Power-On Commissioning
(3) Humidifier circuit breaker
QF5
(6) Main control board power
circuit breaker QF8
Figure 5-5. Ensure that
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