3. Remove the PCM3.1 hardware module from the rack:
a. Remove the terminal blocks, and make sure that there are no wires in the way of removing the hardware module.
• Disconnect any Ethernet cables from the top, middle or bottom of the hardware module.
b. Loosen the hardware module faceplate screws using a screwdriver with a TX20 bit.
• Do not force the screws to unscrew completely. The screws are built-in and therefore normally remain attached to
the faceplate.
c. Use pliers to pull the faceplate screws, and carefullly slide the hardware module out of the rack.
• Only pull the screws. Do not pull any other part of the faceplate.
d. Hold the hardware module by the faceplate when handling.
e. Remove the old battery from the holder, taking care not to damage any components.
f. Insert the correct replacement battery in the correct polarity into the holder, taking care not to damage any
components.
4. Replace the PCM3.1 hardware module to the rack:
a. Hold the PCM3.1 only by its faceplate.
b. Make sure that the hardware module is the right way up, and slide it back into slot 7.
• The hardware module should slide in easily.
c. Tighten the screws on the hardware module faceplate using a screwdriver with a TX20 bit, and 0.5 N·m (4.4 lb-in) of
torque.
INFO
After replacing the battery, check that the date and time settings are correct.
Date and time settings
• For a single controller not connected to other DEIF controllers:
◦ After the battery is replaced, the date and time settings need to be reentered on the controller. You can use PICUS to
enter the correct date and time settings.
• For controllers connected to other controllers:
◦ After the battery is replaced, the date and time settings are resynchronised from the time master controller.
PPM 300 Operator's manual 4189340910 UK
www.deif.com Page 149 of 157
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