MASTERYS BC
from 15 to 20 kVA
2
IT
ALIANOENGLISH
OPERATING PROCEDURES
7
7.1.4 Switching onto manual bypass.
Switching onto the manual bypass creates a direct connection between the UPS input and output, completely
excluding the equipment control part.
This operation is performed in the event of ordinary maintenance on the equipment, so as not to remove the
power supply from the load, or in the event of a serious failure while waiting for the equipment to be repaired.
• From the mimic panel set the
HIGH EFFICIENCY MODE
command from the
COMMANDS
>
IMMEDIATE
COMMANDS
menu.
• Wait for the command to be executed (bypass line on the M1 display on). If this does not take place, suspend
the operation (the auxiliary mains is not suitable for the load).
• Set disconnecting switch
Q6
to position
2
.
• Set switch
Q1
and/or battery switches to position 0 (battery circuit open).
• Open the switch
Q2
.
If there is an external manual bypass, carry out the procedure described above before activat-
ing this switch.
7.1.5 Return to normal mode.
• Set switch
Q2
to position
1
(input mains ON).
• Set switch
Q1
and/or the external battery switches to position 1 (battery circuit closed).
• Activate the start procedure from the commands menu on the mimic panel.
• From the mimic panel set the
HIGH EFFICIENCY MODE
command from the
COMMANDS
>
IMMEDIATE
COMMANDS
menu.
• Check that alarm A06 is not present (if the alarm is present, resolve the problem before continuing).
• Set disconnecting switch
Q6
to position 1 (inverter in output ON).
If there is an external manual bypass, put the switch to position OFF.
• From the mimic panel set the
NORMAL OPERATION
command from the
COMMANDS
>
IMMEDIATE COMMANDS
menu.
7.1.6 Emergency shutdown (ESD).
Should it be necessary to interrupt the continuous power supply provided by the UPS quickly (emergency
shutdown), this can be done by putting disconnecting switch
Q6
to position 0 (zero) or, where applicable, by
activating the emergency button/switch connected to the ADC PCB.
The UPS output can only be electrically disconnected by means of
Q6
.
If the UPS is operating from the manual bypass with mains present, shutdown by means of the
emergency button does not interrupt the power supply to the load. In emergency conditions
all the power supply sources upstream of the UPS must be disconnected.
Summary of Contents for Masterys MAS2BC115M+D1
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