why is power supply not providing power

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The following items may cause the  PS900 series power supply to have no DC output voltage. 1. If  the DC voltage selection jumper is missing, the power supply will not provide any D...
If PS873 power supply provides more than 26.4VDC replace the power supply with PS914 power supply.
If PS873 power supply provides more than 26.4VDC replace the power supply with PS914 power supply.
No it does not, that is for the electrician to run their own AC wiring. Alternately, AC pigtails can be purchased at a local hardware or electrical supply store.
  For Product Shipped Prior to August 2012 using the old (black) potted module: a.       0-100 ft 14 gauge wire b.      0-200 ft 12...
 
The Von Duprin PS914 power supply must be used on the EL devices with either the 900-2RS or 900-4RL option board since the EL devices requires power supplies set at 24VDC to be able to provide the ...
  You can use a Von Duprin PS914 power supply with any of the following option boards depending on the application. 900-2RS board  will power 1 or 2 devices that do not require timing from pow...
Some transformers in the power supplies provide a little humming noise and that is normal. If the humming in Von Duprin PS873 power supply is loud follow these steps. Remove the load from the outp...