5
£
ELECTRICAL RATINGS
VA ratings (not specified as pilot duty) permit the connection of transformers and similar devices
whose inrush current is approximately the same as their running current.
VA pilot duty ratings permit the connection of relays, solenoid valves, lamps, etc. whose total operat-
ing load does not exceed the published rating and whose total inrush current does not exceed 10
times the rating. Running and locked rotor ratings are intended for motors. VA and VA pilot duty
loads may be added to a motor load provided the total load does not exceed the published rating.
CAUTION: Published load ratings assume that no contact be required to handle inrush cur-
rent more often than once in 15 seconds. The use of control switches, solenoids, relays, etc.
which chatter will lead to premature failure of switches in the Fireye control. Similarly, the
contacts cannot be expected to handle short circuit currents without damage. It is important
to run through a test operation (with fuel shut off) following the tripping of a circuit
breaker, a blown fuse or any known instance of chattering.
INSTALLING THE PROGRAMMER AND AMPLIFIER MODULES
To assemble or disassemble a control and its plug-in modules, place the unit on a work bench,
remove the two module retainer hold-down screws and lift off the module retainer. The module
retainer
cannot
be removed if the control is secured into a wiring base. Insert the appropriate ampli-
fier module in the slots at the left side of the unit and gently push the module into position.
Insert the appropriate programmer module in the slots at the right side of the unit and gently push the
module into position. Replace the Module retainer and tighten the two hold-down screws. The unit
cannot
be installed on a wiring base if the module retainer is not in place.
BEFORE INSTALLING THE CONTROL
CAUTION: Assure that electric power is shut off.
Verify that the supply voltage connected to terminals L1, L2 is 120 volts AC nominal. Test the elec-
trical field wiring for short circuits and grounds. The recommended method requires the use of an
ohmmeter set on its
lowest
resistance scale.
1.
Touch the meter probes together and calibrate it accurately to assure a reliable test.
2.
Disconnect the neutral wire (L2) from the control system at the power source. Clip one meter
test lead to the grounded green terminal on the lower right side of the wiring base and with the
other probe touch every other terminal. At no time should the meter read other than infinity.
Summary of Contents for D30 Series
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