The switches operate as follows:a.Lamp Test Switch Depressing of this lamp lights all segments of the three seven-segment numerical displayswhich should appear as 8 8 8. Any indications other than the 8 8 8 require replacement of electroniccomponents by factory-trained personnel only.b.High Speed Switch Operation of the high speed switch changes the basic time of the condensate drain switchto approximately fifteen minutes. This permits the serviceman to observe the correct operation of all elementsin the system.While in the high speed position, this switch illuminates the front panel individual LED trouble lamp labeled"Clock High Speed".c.Reset Switch A pushbutton type located extremely low on the far left side of the board. It is intended to beoperated by a pencil or a non-metallic probe and should never be operated until after a log entry has beenmade indicating the numerical display. Operation of this switch restores this display to 0 0 0.7.17The operation of the clock, both high speed and standard speed, is indicated by a flashing decimal point on thenumerical display. The flash rate of this LED indicator is proportional to the rate at which the clock operates. Itshould operate continuously throughout the operation of the system.Loss of the flashing decimal point indicates the loss of the timer circuit. Should this occur during a voyage whenno replacement timer board is available, manually disconnect the blower on a twice-a-day, forty-second-per-eventbasis. This can be accomplished by unscrewing fuse No. 6, removing it from the socket for approximately forty(40) seconds and then restoring it.This period without static pressure is sufficient to permit any accumulated moisture to drain from the automaticcondensate drain valve.In the event the condensate drain timer should cease operating, the digital readout would cease advancing at atwo-a-day basis. It is recommended that the ship's personnel observe and record these readings on a weeklybasis.In the event the digital readout is observed not to be advancing and a replacement timer board is not availableduring a7-12
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