Product Manual

7
as necessary to prevent the Overload LED from coming on.
If the red Overload LED, the Low Output LED and the audible alarm come on, and the green
Output On LED is completely off, the output of the unit has been shorted out, or there has been
an internal failure. Turn the unit off, disconnect all the loads connected to it, and turn it back
on again. If it comes on normally, turn it off again, reconnect one load, and turn it back on.
Continue reconnecting loads until the short circuit condition returns. Turn the unit off, discon-
nect the faulty load, and reconnect it only after the fault is found and rectied. If the condition
still exists even after all the loads have been disconnected, the unit is defective, and must be
returned to the factory or an authorized service center for repair.
If the unit will not turn on at all, check the input fuses. If they are blown, replace them with
new ones. If those fuses blow as well or the unit still will not turn on, it is defective, and must
be returned to the factory or an authorized service center for repair.
Dry Contact Relay
To use your dry contact output fail relay you must connect a 9-pin D connector to the unit. You
must use pins one and six as is indicated on page 6 in the remote control schematic.
The relay is factory preset to fail in the closed position when the low output LED and buzzer
come on. If you wish to have the relay fail in the open position when the low output LED and
buzzer come on, you must take the cover off the unit and move the jumper to the other position
on J5. J5 is located next to the relay.
To change the position of the jumper, rst turn the unit off and disconnect the unit from both
the input and output power. Next, turn the unit on for 30 seconds to discharge the capacitors,
then turn it off again. Remove the six screws holding on the cover. Turn the unit upside down,
remove the cover and locate J5. It will be next to the relay as is shown in the above diagram.
Simply move the jumper to the desired position as is shown in the above diagram. Replace the
cover and re-install the six screws. Reconnect the unit to input and output power.