Annual Maintenance - Powertronix Quasar Service Manual

Chapter 6 - Maintenance
Scheduled Maintenance

6.1.3 - Annual Maintenance

Caution
We strongly recommend that the annual maintenance is carried out by a manufacturer
trained engineer who is fully aware of the hazards concerned and will carry out this pro
cedure, where necessary with the load connected to the maintenance bypass supply
WARNING
LETHAL VOLTAGES ARE PRESENT IN THE UPS UNIT EVEN IF THE UNIT HAS BEEN
SWITCHED OFF AND ISOLATED
The following procedure is intended as a guide to carrying out an annual preventative maintenance
schedule. It is assumed that the engineer carrying out this procedure has been trained in the operation
of the UPS and is able to operate the unit in the `Maintenance Mode'.
Preliminary checks
Transfer to the Maintenance Bypass
The manual bypass allows the UPS to be switched OFF while the critical load is maintained.
To transfer the load to Maintenance Bypass:
The following change-over sequence should occur, indicating that the load has been transfer to the
bypass line:
6 - 2
1. Visually inspect the outside of the UPS and determine that the operating environment is
correct.
2. Carry out the checks detailed in `Weekly Checks'.
3. Determine if any abnormal faults have been previously recorded.
4. Confirm with the load user that it is safe to transfer the unit to maintenance bypass before
proceeding.
1. Press the `MENU' push button ( A ) on the FRONT PANEL.
a) Select the `COMMAND' screen by pressing either the `BACK' ( C ) or `NEXT' ( b ) push
button.
b) Confirm the `COMMAND' menu selection by pressing `BACK' and `NEXT' at the same
time (i.e. ENTER).
c) Select the `SWITCH LOAD' function by pressing either `BACK' or `NEXT'.
d) Confirm `SWITCH LOAD' function by pressing `BACK' and `NEXT' at the same time.
D A ***CONFIRMED*** message will be displayed
2. Press `CLEAR' ( d ) twice to return to the main menu.
D The yellow `BYPASS ON' LED ( 4 ) is illuminated
D The green `LOAD on INV' LED is extinguished.
3. To turn off the Inverter follow the procedure below:
a) Press the `MENU' push button ( A ) on the FRONT PANEL.
b) Select the `COMMAND' screen by pressing either the `BACK' ( C ) or `NEXT' ( b ) push
button.
c) Confirm the `COMMAND' menu selection by pressing `BACK' and `NEXT' at the same
time (i.e. ENTER).
d) Select the `INVERTER ON-OFF' screen by pressing either the `BACK' ( C ) or `NEXT' (B)
push button.
e) Confirm `INVERTER OFF' function by pressing `BACK' and `NEXT' at the same time.
D A ***CONFIRMED*** message will be displayed
f) Press `CLEAR' twice to return at the main screen.
4. The follow sequence should occur:
D The Alarm buzzer is activated.
D The Red general `ALARM' red LED ( 2 ) will illuminate.
Service Manual
3x3 UPS Maintenance
Issue 2 - November 2001