Seametrics MJN-Series - Manual (Page 4)

LT-103230-081613
08/16/2013
Seametrics Incorporated • 19026 72nd Avenue South • Kent, Washington 98032 • USA
(P) 253.872.0284 • (F) 253.872.0285 • 1.800.975.8153 • www.seametrics.com
CONNECTIONS, MAINTENANCE and REPAIR
Page 4
MJN-SERIES PARTS
1½” 2”
1 Lid and Hinge Pin Assembly 101070 101070
2 Lens Gasket Assembly 101085 101085
3
a Internal Assembly (gallons) 101075 101076
b Internal Assembly (cubic feet) 101079 101080
4 Coupling Assembly (incl 2 sets) 103239-150 103239-200
5 Coupling Gasket Assembly (incl 2) 103240-150 103240-200
6 Lens 101004 101004
7 Sensor Screw 101045 101045
8
a Single Reed Switch Sensor (MJR) 100980 100980
b Double Reed Switch Sensor (MJR) 100993 100993
c Single Hall-Effect Sensor (MJE) 101065 101065
9
a Register (gallons) 100999 101000
b Register (cubic feet) 101008 101009
10 Internal Strainer 101044 101044
11 Tubular Strainer 101031 101032
12 Register Gasket 102228 102228
INTERNAL PARTS REPLACEMENT. All of the internal parts of
an MJN-Series meter lift out as a unit, after the top has been
unscrewed. The lens can then be removed and the internal as-
sembly lifted out. If necessary, turn the meter upside 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.
MJNE:
Hall-Effect
MJNR:
Reed Switch
MJNR:
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.
¾” 1”
1 Lid and Hinge Pin Assembly 101068 101069
2 Lens Gasket Assembly 101071 101072
3
a Internal Assembly (gallons) 101073 101074
b Internal Assembly (cubic feet) 101077 101078
4 Coupling Assembly (incl 2 sets) 103239-075 103239-100
5 Coupling Gasket Assembly (incl 2) 103240-075 103240-100
6 Lens 101004 101004
7 Sensor Screw 101045 101045
8
a Single Reed Switch Sensor (MJR) 100980 100980
b Double Reed Switch Sensor (MJR) 100993 100993
c Single Hall-Effect Sensor (MJE) 101065 101065
9
a Register (gallons) 100997 100998
b Register (cubic feet) 101006 101007
10 Internal Strainer 101016 101043
11 Tubular Strainer 101029 101030
12 Register Gasket 101013 101027
1
2
3a
or
3b
4
5
10
12
9a
or
9b
6
7
8 a-c