Thermo Scientific APEX 100 User Manual page 287

Wiring AC Power into the PSU PCB–A
We recommend using an AC power source that is not connected to heavy-duty loads or
loads that might cause interference or dropouts in the supply. We do not recommend
sharing an AC power source that feeds powerful motor invertors, because they can
cause interference problems. Use a light circuit and supply the detector with an isolator
switch.
J1 has a removable receptacle. Remove it and connect AC power (85 VAC to 264 VAC).
Ensure a good earth ground to J1. See the figure below for the location of J1.
Caution
Do not wire outputs directly from the PSU PCB–A.
There are six open collector outputs provided on the PCB that may be connected to
solenoids powered from DC voltages not exceeding 24 VDC nominal. Do not use these
outputs unless you have specialized knowledge.
If you need volt-free relay outputs, please use the PCB–A mounted on the PSU.
Thermo Scientific APEX User's Guide Page 287