User Guide Gamatronic Electronic Industries Ltd.
µ
PS-SP 3:3, 3x220 in, 3x208 60 Hz out
Operating the
μ
PS Series UPS
32
Verify that there are no LEDs lit on the display panel.
The UPS can now be serviced.
5.4
Deactivating MAINTENANCE BYPASS
WARNINGS
!!
The Maintenance Bypass switch should be operated by authorized
personnel only.
!!
To avoid accidental short-circuiting of the UPS output to the mains when
entering or leaving Maintenance Bypass mode, be sure to follow these
instructions in the order given!
!!
To avoid accidental disconnection of the load devices from AC power, be
sure to follow these instructions in the order given!
!!
NEVER lift the MAINTENANCE BYPASS circuit breaker without first putting
the UPS in BYPASS mode (the red BYPASS light must be lit).
!!
For UPSs with the optional Bypass Isolation Transformer, DO NOT turn off
the Static Switch Bypass circuit breaker when using the Maintenance
Bypass switch.
To deactivate MAINTENANCE BYPASS and restart the UPS:
1.
Verify that the OUTPUT circuit breaker is turned off.
2.
Turn on the RECTIFIER , STATIC SWITCH BYPASS, and
BATTERY circuit breakers.
3.
Verify that the message SELF-CHECK OK appears on the
LCD. It is automatically followed by the message UPS OFF.
4.
Press the UPS ON button (on the large-cabinet models, the UPS
ON/OFF button) and wait 40 seconds (approximately) until the
UPS OK message appears on the LCD.
5.
Press twice on the B/P button to put the UPS into BYPASS
mode.
6.
Verify that the B/P LED is lit.
7.
Turn on the OUTPUT circuit breaker.
8.
Turn off the MAINTENANCE BYPASS circuit breaker.
9.
Press on the INV button on the display panel to put the
UPS in INVERTER mode.
10.
Verify that the green INV light is lit on the display panel.
The loads are now supplied by the UPS.
Summary of Contents for PS-SP Series
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