Specifications

Power Supply, Continued
Step Procedure
1. Turn off power to the Maxum II at the main circuit breaker.
2. Open electronic enclosure door (using a 4mm (5/32”) Allen
wrench if necessary).
3. Label and disconnect any cables that run from the power
supply to other devices. This includes the internal power to
the PECM-DC, the internal chassis ground, and the external
power from the main. It also includes any other device that
may be connected. Wires are disconnected by loosening,
but not removing, the bus screws.
4. The power supply is mounted on a DIN rail using a quick
disconnect bracket. To release the bracket, insert a flat
head screwdriver into the tab at the back bottom of the
power supply and push the tab down. As you do this, pull
the bottom of the power supply forward. See below.
5. After the bottom of the power supply is pulled forward, it can
be lifted off the DIN rail by pulling it straight up.
6. Install the new power supply by reversing the process used
to remove the old power supply. Hook the top of the power
supply’s bracket over the top of the DIN rail, with the bottom
out. Then, snap the bottom into place.
7. Reconnect wires, using caution to make sure that all
connections are secure and in their proper locations.
8. Before closing electronic enclosure door and reapplying AC
power, be certain all interface cables are correctly
connected from the power supply to other modules within
the analyzer.
Power Supply
Removal and
Installation
4-16 A5E31405710001