49EN
MASTERYS GP4 60-160 kVA - Ref.: IOMMASGPXX07-EN 05
Switching on from maintenance bypass
• Put switch Q1 into position 1 (mains ON).
• Wait for the display to switch on.
• Enter MAIN MENU > CONTROLS > UPS PROCEDURE.
• Select START PROCEDURE and press ENTER.
• Carry out the operations indicated on the display.
NOTE!
When an external maintenance bypass
(1)
is present, put the switch to position 0 (OFF).
1. Not monitored by the UPS or by the parallel system.
9.4 Extended out of service
When the UPS is deactivated for some time, the batteries must be recharged regularly.
They should be recharged every three months.
• Check that output switches Q3 and Q5 are OFF.
• Connect the mains and auxiliary mains to the UPS.
• Switch ON input switch Q1.
• Wait until displays switch on.
• Close the external battery breaker/fuses.
• Wait until the batteries are fully charged. Check in the menu MAIN MENU > MEASUREMENTS > BATTERY
MEASUREMENTS.
• Open the external battery breaker/fuses.
• Switch OFF input switch Q1.
9.5 Emergency shutdown
NOTE!
This operations interrupts the supply to the output load from both inverters and automatic
bypass.
If the UPS is operating from the maintenance bypass with the mains present, the emergency
shutdown does not interrupt the power supply to the load. In emergency conditions all power
supplies upstream of the UPS must be disconnected.
UPS power OFF
Put Q3 to position 0 when it’s necessary to interrupt the power supply quickly.
Remote UPS power OFF
It is possible to interrupt the power supply to the output load using the ADC+SL card. Refer to 'Standard features
and option' chapter.
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