The DNFT-PRG is a totally enclosed electronic device, combining the latest technology in microprocessor and transistor components for detecting Slow-Flow and No-Flow of divider block lubrication systems. The DNFT incorporates an oscillating crystal to accurately monitor the cycle time of the lubrication system to enable precisely timed shutdown capability. The magnet assembly and control housing mount directly to the divider valve to become an integral part of the lubrication system. The DNFT-PRG operates on field replaceable lithium battery. If battery voltage drops below normal operating levels, the DNFT goes into alarm mode and the unit cannot be restarted. The PRG utilizes a LED to indicate each cycle of the divider valve. This enables the operator to easily set and monitor lubrication rates. The PRG comes with a liquid crystal display to display total pints, cycle time of divider valve, total cycles of divider valve, and pints per day pump rate. The PRG can easily be programmed for an alarm time from 20 seconds to 4minutes 15 seconds.
MONITORS MOVEMENT OF DIVIDER VALVE PISTON FOR DEPENDABLE “TIMED” SHUTDOWN PROTECTION
CLOSED LOOP OR OPEN LOOP OPERATION
INSTALLS DIRECTLY TO DIVIDER VALVE
NOT AFFECTED BY TEMPERATURE OR OIL VISCOSITY
REQUIRES NO EXTERNAL POWER
FIELD REPLACEABLE BATTERY
LED INDICATOR AND LCD DISPLAY
PRG IS PROGRAMMABLE TO DISPLAY: TOTAL PINTS PINTS PER DAY PUMP RATE TOTAL DIVIDER VALVE CYCLES CYCLE TIME OF DIVIDER VALVE
PROGRAMMABLE ALARM TIME
DEDICATED SWITCH CLOSURE TO MONITOR EACH DIVIDER VALVE CYCLE (PS OPTION)
SPECIFICATIONS
Temperature Range........................................................ -40C to +55C
Switch RaTing.............................................................2.5VA/240 VDC
Epoxy Encapsulated..................................UL LISTED EL-CAST VFR 641
Alarm/Shutdown..................................Programmable - 20 sec to 4 min 15 sec alarm
Power......................................................Field Replaceable - Lithium Battery
Battery.................................................................................. P/N 000505
Divider Block Application......................Dropsa/Lincoln/SBCO/Lubriquip
Warranty..................................................................................2.5 Years />
RATINGS
OPERATION
Lubricant flow through the divider valve assembly forces the pistons to cycle back and forth causing a lateral movement of a magnet linked to the piston. Movement is monitored by the microprocessor which resets the timer, lights the LED, and allows the unit to continue operation. This indicates one complete cycle of the lubrication system. The microprocessor must receive this cycle in a predetermined time or a shutdown will occur. The DNFT will automatically reset alarm circuit when normal operation of divider valve resumes.
TROUBLESHOOTING DNFT-PRG-PS
NOTICE: WHEN MORE THAN ONE DNFT IS INSTALLED ON THE COMPRESSOR OR ENGINE, EACH DNFT MUST BE WIRED TO A SEPARATE ALARM CIRCUIT ON THE CONTROL PANEL, ANNUNCIATOR OR PLC TO SIMPLIFY TROUBLESHOOTING THE LUBRICATION SYSTEM AND DNFT.
