4
Installation
1. The Machine room intercom requires two pair of wires,
one for the ADA elevator phone and one for the phone
line. The SHW-MRI-1 system requires 24VDC/0.5A to
operate.
Note: Cabling can be inexpensive telephone communication
cable, which is normally 20-22 gauge twisted pair. Through
the travelling cable you will need a twisted shielded pair with
the shield grounded at the elevator controller or a good earth
ground. The shield needs to be connected throughout the
entire run including any splices and should only be grounded
at the controller end.
2. Install the SHW-MRI-1 unit on the wall or flat surface with
(4) 8-32 screws using the (4) keyholes on the back of the
unit. (See Figure 2)
3. Plug in the incoming phone line to the “Incoming” phone
jack of the SHW-MRI-1 unit. If you don’t have a modular
connector on your phone line wires, you need to open up
the Incoming phone jack and connect the Incoming
phone line to the Green and Red terminals of that jack.
Close the jack when finished. (See Figure 1)
4. Plug in the ADA elevator phone to the “Outgoing” phone
jack of the SHW-MRI-1 unit. If you don’t have a modular
connector on your phone wires, you need to open up the
“Outgoing” phone jack and connect the ADA elevator
phone wires to the Green and Red terminals of that jack.
Close the jack when finished. (See Figure 1)