Portable Test Kit #50

Instruction Leaflet

30-471 (E)

Page 11

2.It may be used to start an engine-generator set at selected intervals, at least once per week, but without causing the transfer switch to operate and transfer the load to the generator supply. At the end of the interval it will cause the engine-generator to shutdown.

INSTRUCTIONS — TO OPERATE THE ENGINE FOR AN INTERVAL ONCE EACH WEEK, WITH OR WITHOUT OPERATION OF THE TRANSFER SWITCH.

1.Extend the tabs of Dial A outwards, except those representing the time of day for the running of the engine or operation of the transfer switch.

2.Determine the day of the week for this testing. Install the six brass pins (called skip pins) in the spokes of Dial B representing the other six days of the week.

3.Turn Dial A counterclockwise until the special tab at 12:00 midnight advances Dial B. Turn Dial B until present day of the week is opposite the copper arrow. Turn Dial A counterclockwise until the correct time of day (or night) is opposite the arrow on the nameplate.

4.If the interval of running the engine is desired more than one day per week but at the same time of day, remove the skip pin from the appropriate spoke of Dial B.

Caution

DO NOT insert skip pins in any spoke when that spoke is pointing towards the copper arrow

An inexpensive, portable test kit, #1278C67G01, is available for convenient field testing and calibration of all plug-in cards and output relays. The only power source required is a 120V convenience outlet. A selector switch allows the operator to test individual cards or to simulate ATS operation by having the source monitoring cards drive the time delay cards which in turn drive the output relays, exactly as in actual use. Calibration checks or changes can thus be accomplished without necessity of energizing the alternate power source.