Specifications

PL-WA-13326-C
3/09
CONNECTION, MAINTENANCE and REPAIR
Page 4
WFM-SERIES PARTS
WFM-SERIES 3/4” 1”
1 Lid and Hinge Pin Assembly 51662 51663
2 Lens Gasket Assembly 51665 51666
3 Internal Assembly (gallons) 51668 51669
4 Coupling Assembly (incl 2 sets) 51676 51677
5 Coupling Gasket Assembly (incl 2) 51680 51681
6 Lens 51684 51684
7 Sensor Screw 51685 51685
a Single Reed Switch Sensor (WFMxx1) 51650 51650
b
Double Reed Switch Sensor (WFMxx1) 51651 51651
8
c
Single Hall-Effect Sensor (WFMxx2) 51652 51652
9 Register (gallons) 51654 51655
10 Internal Strainer 51686 51687
11 Tubular Strainer 51689 51690
WFM-SERIES 1 1/2” 2”
1 Lid and Hinge Pin Assembly 51664 51664
2 Lens Gasket Assembly 51667 51667
3 Internal Assembly (gallons) 51670 51671
4 Coupling Assembly (incl 2 sets) 51678 51679
5 Coupling Gasket Assembly (incl 2) 51682 51683
6 Lens 51684 51684
7 Sensor Screw 51685 51685
a Single Reed Switch Sensor (WFMxx1) 51650 51650
b
Double Reed Switch Sensor (WFMxx1) 51651 51651
8
c
Single Hall-Effect Sensor (WFMxx2) 51652 51652
9 Register (gallons) 51656 51657
10 Internal Strainer 51688 51688
11 Tubular Strainer 51691 51692
1
3
6
7
8 a-c
9
10
11
4
5
(includes 2)
(includes 2 sets)
Except as noted, individual parts are not available.
2
INTERNAL PARTS REPLACEMENT. All of the internal parts
of an WFM-Series meter lift out as a unit, after the top has
been unscrewed. The lens can then be removed and the
internal assembly lifted out. If necessary, turn the meter up-
side down and tap one end lightly on a countertop to loosen
the internals. The assembly can be separated by hand.
Blue - (No Connection)
Black - Common
Red - N O
Black - Common
Red - N O
Blue - N O
CONNECTION DIAGRAMS
Diagram 1: Single Sensor Diagram 2: Dual Sensor
NOTE: The Dual Sensor is distinguished by a red stripe on the cable
at the base of the sensor.
WFMxx2:
Hall-Effect
NOTE: MJ(H)E not available with dual sensor
WFMxx1:
Reed Switch
WFMxx1:
Reed Switch
Black ( - )
White (signal)
Red (+)
To Distinguish Single Sensor From Dual:
Single: (if new from factory) blue wire is cut back on cable end.
Dual: A red stripe will be on cable near sensor.
Note: Dual sensor can be used as a single sensor also - use
either the red OR the blue wire w/black. If using it as a dual
sensor then connecting red and blue together will produce
two pulses with every revolution of magnet.
5 Boynton Road Hopping Brook Park Holliston, MA 01746 • Tel: [phone] Fax: [phone] www.walchem.com