Richardson's handbook of projection (1927)

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556 HANDBOOK OF PROJECTION FOR An unequal air space between rotor and stator of 2-bearing sets may be corrected by loosening the nuts holding the motor and bracket. Using a feeler gauge between rotor and stator, gradually tighten bracket nuts until air gap is equal all the way around. RHEOSTAT TROUBLES.— If rheostat fails to change amperage when adjustment is altered, it may be because of (a) poor contact of moving arm with contacts. Contacts may be dirty or corroded, or adjusting handle slipping on adjusting rod. (b) Poor conections somewhere in the instrument, or a badly burned wire. Examine the rheostat once every three months and make sure it is in good condition. WARNING.— Because of the fact that the Actodectors supply low voltage, it is especially important that the motor run the generator at full speed, therefore examine all connections from main house switchboard to motor periodically making sure they are all tight and in perfect electrical condition. Approximate Weight and Dimensions of ACTODECTORS "Double Rated" ACTODECTOR Ampere Rating Weight Width Length Height 25-25' polyphase 300 15 26 13 25-25 single phase 405 21 41 1&A 35-35 polyphase 570 21 41 19 50-50 polyphase 700 21 49 21 75-75 polyphase 850 21 54 21% 100-100 polyphase 1300 25 59 23 "Single Rated" ACTODECTOR Ampere Rating Weight Width Length Height 100 polyphase 1300 25 59 23 150 polyphase 1800 24 67 27 200 polyphase 2000 24 70 27 250 polvphase..... 2400 26 77 29 300 polyphase 2800 26 80 29 "Double Rated" 3-Bearing Type ACTODECTOR Approximate Dimensions of Instrument Panels for Double Rated Generators Ampere Size Voltage Width Length Height 25-25 70 5" 14" 10" 35-35 70 5" 14" 10" 50-50 70 5" 14" 10" 75-75 70 5" 19" 14" 100-100 70 5^ 1ST 14" For Single Rated Generators 100 100 21" 30" 24" 150 100 21" 30" 24" 200 100 21" 30" 24" 250 100 21" 30" 24" 300 100 21" 30" 24"