Carmanah Technologies Corp. | 250 Bay St, Victoria, BC V9A 3K5, Canada | 1-877-722-8877 |
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G SERIES USER MANUAL
8.0 MAINTENANCE AND PRODUCT CARE
8.3 EMS Replacement
The solar panel may still be producing energy if it is exposed to light. Remove the solar fuse and
then the battery fuse prior to replacing the EMS.
Sensitive electronics can be damaged by electrostatic discharge. Observe proper ESD
precautions when installing the new EMS.
1. Disconnect the solar fuse, and then the battery fuse.
2. Remove the four screws securing the metal EMS chassis to the cabinet.
3. Turn the metal housing over to reveal the circuit board and review the wire positions on the existing EMS.
Carefully remove the radio module attached to the antenna from the board if present.
4. Remove the wires from each terminal block connector: with a small screwdriver, press down firmly on the
wire release button above the wire and pull the wire out. Photograph the existing wire terminations before
starting if convenient.
5. Remove the 4 screws securing the old EMS PCB to the metal chassis and set the old EMS PCB aside.
6. Remove the new EMS PCB from its antistatic bag and secure it to the metal housing with the same 4
screws.
7. Check that the wire strands are straight and that all the strands will go into each terminal. This will avoid
short circuits created by stray strands. Twist the wire strands as necessary to keep the strands together.
8. With a small screwdriver, press down firmly on the wire release button and insert each wire into its
terminal, referring to the picture taken in step 3.
9. If a radio module is present, carefully thread the antenna connector to the module. Do not damage the
circuit board with tools.
10. Secure the EMS enclosure into the cabinet with the screws.
11. Reinstall the battery fuse, then the solar fuse.
12.
The system should now be operating and the front display on the EMS should light up.
13. The replacement EMS should be pre-programed from the factory for your location and installation
requirements. You may review the settings if necessary. See the information decal on the back of the
solar panel and the user manual for additional information.
