DNFT performs monitoring and shutdown functions like No-Flow, Low-Flow or Excessive-Flow for Divider-Block Lubrication Systems. The DNFT is a totally enclosed solid state electronic device for detecting Slow-Flow and No-Flow on in-line progressive lubrication systems. The Digital No-Flow Timer incorporates a crystal oscillator to accurately monitor the cycle time of the lubrication system enabling precision timed shutdown capability. An internal Lithium battery powers it, which is easily replaceable. The Digital No-Flow Timer is an ISO 9001 certified product and the ISO certification can be viewed here. All Digital No-Flow.
DESCRIPTION
The DNFT-LED-PS 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 precision 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 operates on a field replaceable lithium battery. If battery voltage drops below normal operating levels the DNFT goes into alarm mode and the unit cannot be restarted. LED models utilize an LED to indicate each cycle of the divider valve. This enables the operator to easily set and monitor lubrication rates.
- Monitors movement of divider block 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
- Led indicator - cycle indication
- Dedicated switch closure to monitor each divider valve cycle (ps option)
SPECIFICATIONS
Temperature Range.............................................. -40C to +55C
Switch RaTing........................................................2.5VA/240 VDC
PRX Rating............................................2.5VA/200 VDC MAX/0.5A
Epoxy Encapsulated.......................UL LISTED EL-CAST VFR 641
Alarm/Shutdown........................ Factory default for 3 minute alarm
Power......................................Field Replaceable - Lithium Battery
Battery........................................................................ P/N 000505
Divider Block Application............Dropsa/Lincoln/SBCO/Lubriquip
Warranty.........................................................................2.5 Years />
- Dnft-led-ps digital no-flow timer with dedicated proximity switch.
- Install on dropsa/lincoln/sbco/lubriquip divider block.
- Switch rating 2.5va 240vdc
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.
DNFT BATTERY REPLACEMENT INSTRUCTIONS
Directions for replacing the battery in the Digital No Flow Timer
1. Shut down the engine or set the bypass timer.
2. Use a 3/8" ratchet to remove the 1/2" NPT Pipe plug.
3. Remove the battery from the DNFT and disconnect from the polarized connector.
4. Connect the new battery to the attached polarized plug.
5. Reinsert the battery and reinstall 1/2" NPT Pipe plug.
6. Verify the DNFT is working by pre-lubing the system and check for LCD number change.
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