START ON/OFF SEQUENCE: This pushbutton switch is used only when the key lock switch is in REM posi- tion and the PS-PRO HT is in Momentary Mode. It then acts the same as any other remote momentary switch that may be connected to the rear panel ter- minal strip. If the switched outlets are on, pushing it begins an OFF sequence. If they are off, pushing it begins an ON sequence. Do not use this switch when in Maintained Mode.
PROTECTION OK: This LED is normally on when the power to the PS-PRO HT’s outlets is switched on. It monitors the integrity of the protection devices and reports if the protection is compromised. If an extremely large spike is encountered that exceeds the PS-PRO HT’s capacity, the main group of input protectors will blow an internal fuse, causing the indicator to go out. If this LED is not lit when the power switch is on, full protection is not function- ing. Spike protection may still exist, but will have a reduced capacity to absorb current. If this LED is not lit, please contact the Furman Service Depart- ment.
EXTREME VOLTAGE SHUTDOWN: This LED indica- tor is normally off. It monitors a hazard common in the entertainment industry—wiring faults—for example, accidental connection to 220V. The PS- PRO HT senses voltages that are so high or low that operation would be impossible (under 80V or over 140V) and shuts the power down before damage can occur. Upon initially applying power to the PS-PRO HT, this indicator will be lit if the unit is receiving below 80 volts or more than 140 volts, and power will not be applied to the PS-PRO HT’s outlets. If the unit has been operating with an acceptable input voltage and then the voltage goes out of the acceptable range, the PS-PRO HT will shut down power to all of its switched outlets simultaneously, without observing the OFF delay 5
cycle, and this LED will begin flashing. When power returns to within the acceptable range, the PS-PRO HT will observe its ON delays as it returns power to its switched outlets, and this LED will go out.
NOTE: If the mains power is below 80 volts and has caused the PS-PRO HT to remove power from its outlets, the PS-PRO HT will not restore power to its outlets until the mains voltage is more than 90 volts. If the mains power is above 140 volts and has caused the PS-PRO HT to remove power from its outlets, the PS-PRO HT will not restore power to its outlets until the mains voltage is less than 130 volts. The reason for this is to prevent the power oscillating on and off in marginal conditions.
DELAY ADJUST: This screwdriver-adjustable trimpot allows you to set the total turn-on/turn-off delay time from 1 to 60 seconds, as explained on page 4. The trimpot adjusts both the on delay and off delay times simultaneously. Turn the trimpot clockwise to increase the on and off delay times; turn the trimpot counterclockwise to decrease the delay times.
POWER STATUS (DELAY) LEDs: One green LED is pro- vided for each of the three delay stages. Each LED lights when power is applied to its corresponding duplex outlet on the rear panel. All three LEDs then remain steadily lit until power is removed. During the power-down delay cycle, each LED goes off as power to its corresponding outlet is removed. In addition, the Delay 1 LED flashes if a remote switch (or the stored state) is OFF.
UNSWITCHED OUTLET: This convenient outlet provides power at all times when the PS-PRO HT is plugged in and operating under normal power conditions.
ON/REM/OFF SWITCH: When turned to the ON posi- tion, this key lock switch initiates an ON sequence, applying power to the PS-PRO HT’s switched out- lets. When turned to the OFF position, it begins an
