1. LED does Not
Blink, Control
Panel Indicates
Lube No-Flow
(See also, 3.Erratic shutdown)
D. Bent Magnet Housing
DNFT
A. Improperly Adjusted
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.
B. Spring or Magnet is
Assembly
Broken in Magnet
MAGNET
SPACER
SPRING
MAGNET HOUSING (HEX)
STRAIGHT OK !
BENT REPLACE !
PISTON
ENCLOSURE
PLUGS
System.
Divider Valve
B. Air or Debris in
OUTLET PLUGS
ELETRICAL TESTING OF DNFT ALARM CIRCUIT
PROBLEM
POSSIBLE CAUSE
SERVICE PROCEDURE AND / OR CORRECTION
TROUBLESHOOTING DNFT-LED-PS
Remove the battery from the DNFT per the attached instructions. Replace the
battery if the voltage is below 2.5 volts using a factory recommended replacement
battery.
C. Low Battery voltage
CAUTION: DISCONNECT ALL WIRING PRIOR TO WELDING ON COMPRESSOR OR SKID.
DIVIDER VALVE
TYPICAL INSTALLATION
DNFT
24S
INTERNAL VIEW OF
DIVIDER VALVE
PISTON ENCLOSURE PLUG
O-RING OR
METAL GASKET
24S
Faulty Lube Pump
Loosen set screws, remove DNFT from magnet housing. Check for damaged or
bent magnet housing. Remove magnet assembly from divider valve. Replace
magnet housing, magnet, spring and spacer. Re-install DNFT on magnet
housing. If necessary, adjust DNFT, check for LED blink. Purge air from
system
with lubrication system purge gun.
1.
NORMALLY OPEN
- Attach ohmmeter to red wires. Meter should read 10
megaohms in operation and less than 10 ohms in alarm state.
2.
NORMALLY CLOSED
- Attach ohmmeter to orange wires. Meter should
read less than 10 ohms in operation and infinity in alarm state.
Loosen set screws and remove DNFT from magnet housing. Check for correct
magnet housing for divider valve manufacturer. Remove and replace with correct
magnet housing. Replace DNFT on magnet housing. If necessary adjust DNFT,
check for LED blink. Purge air from system with lubrication system purge gun.
Check system pressure insure oil is flowing to divider valves. If necessary
install pressure gauge to monitor operation of lubrication system.
1. Loosen outlet plugs in front of valve blocks. Fast purge the system with
lubrication system purge gun until clean, clear, air free oil appears from plugs.
2. Loosen each piston enclosure plug individually to purge air from behind
piston. Do not remove piston enclosure plugs. Tighten all divider valve plugs.
Adjust DNFT.
To insure proper operation of the divider block lubrication
system, it is absolutely necessary that all tubing and components be filled
with oil and free of air before start-up.
Check system pressure to insure oil is flowing to divider valves. If necessary,
install pressure gauge to monitor operation of lubrication system. Check gauge
to insure pump will build sufficient pressure to inject oil into cylinder. You cannot
check for oil flow into cylinder by removing tubing from check valve and pumping
oil to atmosphere. Replace pump.
Loosen set screws, remove DNFT from magnet housing. Remove magnet
assembly from divider valve. Remove magnet, spacer and spring. Check
components for damage. Replace damaged spring and/or magnet and install on
divider valve. If necessary, adjust DNFT, check for LED blink. Purge air from
system with lubrication system purge gun.
Loosen set screws, slide DNFT all the way onto hex of magnet housing and
torque to 25 inch pounds max.(
Do not over tighten)
Cycle divider valve by
pumping clean oil through system with lubrication system purge gun or running
compressor. If necessary, adjust DNFT 1/16“ back until LED blinks with each
cycle of divider valve.
2. After installation of
DNFT, Rupture Disc is
Blown and Divider Valve
is Locked up.
A.Wrong Magnet Housing.
Installed on Divider Valve
(See magnet assy. Below)
RED
RED
ORANGE
ORANGE
GREEN
YELLOW
507LIT LED-PS-WI-3
06.05.01
U.S. PAT. NO. 5,835,372
R
DIGITAL NO-FLOW TIMER
DNFT
ODESSA, TX USA
INSTRUMENT
INSTRUMENT
WHITLOCK
WHITLOCK
1-800-337-34121-800-337-3412
www
.noflo.com
www
.noflo.com
DNFT-LED-PS
DIGITAL NO-FLOW TIMER
R
3 - M I N
2.5VA / 240VDC
2.5VA / 240VDC
LED-PS
LED-PS
U.S. PAT. NO. 5,835,372
RED-Open Loop ORANGE-Closed Loop GRN-Ground YEL -Prox. SWI.
MODEL
RATED
SERIAL #
PN
ALARM
186200
CE
R
US
C
Cl I; Div 1; Grps. A,B,C,D;T4
Cl I; Zone 1; Ex md IIC T4
Factory Sealed
CYCLE INDICATION
0344
KEMA 00ATEX1090 X Amb. -40° C...+80°C
II 2G EEx m IIC T5
0 0 0 5 0 7
0 0 0 5 0 7
ODESSA, TX USA
INSTRUMENT
INSTRUMENT
WHITLOCK
WHITLOCK
1-800-337-34121-800-337-3412
www
.noflo.com
www
.noflo.com
WHITLOCK INSTRUMENT
1300 N. Texas
Odessa, TX 79761
432.3373412 Fax 432.335.5926
1.800.337.3412 www.noflo.com
DNFT must be installed with correct magnet
assembly for each divider valve manufacturer.
Magnet Assemblies and Applications
Trabon Metal Gasket Seal
1994 or Earlier
7/16"-20
Lincoln O-Ring Seal
Extended Nose
7/16"-20
SBCO &TRABON
O-Ring Seal
7/16"-20
Dropsa No Gasket
Raised Shoulder
Magnet Assy # 000011
Magnet Assy # 000012
Magnet Assy # 000004
Magnet Assy # 000013
