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MI00/10056 rev. 8 — 05/2006-- page
45
7.0 START UP
1. Switch on the AC reserve and the main AC Utility supply to the UPS.
2. Turn on the Utility supply Input, Reserve Input (if fitted) and UPS Output switches located behind the front
panel, see figure 18 for 24kVA, figure 21 for 36kVA or figure 24 for 50/80kVA.
3. Replace the front panel.
4. Press the CANCEL AUDIBLE ALARM switch (see section 6.2)
5. Initially, all the green indicators will flash on the display mimic. After about 30 seconds the supply and
battery indicators should stop flashing.
6. Press the Inverter On push button (I).
7. The inverter should now start and after a delay of approximately 30 seconds the message ‘SYSTEM
NORMAL’, in English, will appear on the liquid crystal display.
8. Select the required language by pressing page right control
until the ‘SELECT LANGUAGE’
message appears on the liquid crystal display. Press the page down control
until the required
language is selected. Press the page right control
once more confirm the language selection.
Thereafter, all messages will appear in the selected language.
8.0 MAINTENANCE BYPASS
The EDP70 PLUS UPS is equipped with Manual Maintenance Bypass systems. If a unit requires servicing, the Manual
Maintenance Bypass allows the load to be connected directly to the AC supply so that the unit may be serviced in safety.
The following instructions must be followed:
1. Ensure that ‘SYSTEM NORMAL’ is displayed on the LCD. (Note: If ‘SYSTEM NORMAL’ is not displayed
check that the inverter is not ‘OUT OF SYNC’, see section 10.7. Turning the inverter off under this fault
condition will interrupt the load supply.)
2. Turn off the inverter by pressing the inverter shutdown button for more than 2 seconds
3. Turn the Maintenance Bypass Switch (located behind front panel, see figure 18, 21 or 24) to ON.
4. Turn off the Primary Input, Reserve Input and UPS Output Switches, see figure 18, 21 or 24.
THE LOAD IS NOW SUPPLIED DIRECTLY FROM THE AC UTILITY SUPPLY AND IS NO LONGER
PROTECTED BY THE UPS
CAUTION: Some components in the UPS will retain a static voltage even after the switches have been
opened. Also, on the 50/80kVA ratings, the isolating transformer and the relative cooling fans
are still supplied from the Bypass.
To return to the normal operating mode, follow the above procedure in reverse.
Note: The EDP70 PLUS UPS must not be left operating with the Maintenance Bypass Switch in the ON
position.