Modular UPS 25KVA~900KVA User Manual 65
Maintenance
6.
Wait 10 mins before opening the cover for repairing.
7.
After the repairing is done, push the bypass module into the cabinet following the
steps in section 3.3.2 and the LED touch screen goes on.
8.
The bypass turns on 30S after the LED touch screen goes on and the bypass
indicator goes green and the load is powered through maintenance bypass and
static bypass.
9.
Turn off the maintenance bypass switch and the load is powered through bypass.
The rectifier starts followed by the inverter.
10.
After 60S, the system transfers to Normal mode.
6.3.2 Maintaining Static Bypass Unit for 20-slot Cabinet
1.
Transfer the system to bypass mode through the LCD control panel (Refer to
section4.5.5);
2.
Open the battery switch, Close maintenance bypass switch; the UPS power will be
supplied by maintenance bypass;
3.
Open the Main Input switch, Input Bypass switch and UPS output switch;
4.
Disconnect Inner Control Neutral cable as Fig.6-1;
5.
Take out the screws fixed on the fan panel and dismantle the fan panel;
6.
Take out the two sets of control signal cables (in DB9 type);
7.
Take out the fan units and remove the cables for the fans;
8.
Dismantle the screws that fix the static bypass unit and copper bars;
9.
Pull the static bypass unit to an extent which can make the maintenance
possible(the static bypass unit can be repaired without taking out);
10.
After the maintenance is done, push the static bypass inside;
11.
Fix the static bypass and inner copper bars from the back of the cabinet;
12.
Connect the cables for the fans and restore the fan units;
13.
Connect two sets of control signal cables (in DB9 type);
14.
Install the fan panel, fix the screws;
15.
Close the UPS bypass input switch, output switch, main input switch in order;
16.
Connect Inner Control Neutral cable as Fig.6-1
17.
2 minutes after the power on, there is energy flow in the LCD panel showing that
the load is supplied by static bypass and manual bypass
18.
Open the manual bypass switch, the Inverter will start automatically. After 60s,
the UPS will run in Normal mode, which indicates the maintenance is done
successfully.
Note: If it needs to take out the static bypass unit to do the repair, a forklift is
suggested. (The weight of the static bypass unit can be 55kg).
6.3.3 Maintenance for the Air-drawing fans
1.
Take out the fan unit panel
2.
Push the button of the fans to turn off the fans
3.
Change the fans
4.
Push the button to turn on the fans again
5.
Install the fan panel
6.3.4 Battery Maintenance
For the Lead-Acid maintenance free battery, when maintenance the battery according
to requirements, battery life can be prolonged. The battery life is mainly determined
by the following factors:
1. Installation. The battery should be placed in dry and cool place with good
ventilation. Avoid direct sunlight and keep away from heat source. When installing,
