Operation, Electrical ratings – Xylem MM 413F Replacement Head Mechanism With Switch Assembly: 93-HD, 93-M-HD, 93-7B-HD, 93-7B-M-HD, 94-HD 94-M-HD 94-7B-HD 94-7B-M-HD User Manual
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Electrical Ratings
Models with 5 or 5-M Switch
Switch Ratings
Burner
Valve
120 VAC
345 VA
0 - 135 ohms @ 24 VAC
240 VAC
Models with 7B or 7B-M Switch
Approximate
Distance Above
Cast Line
Differential
Setting
In. (mm)
In. (mm)
Pump Off
2
3
/
16
(56)
1
1
/
16
(27)
Pump On
1
1
/
8
(29)
Burner On
1
3
/
8
(35)
1
3
/
8
(35)
Burner Off
0
Switch Settings
Values are ±
1
/
8
" (3mm)
NOTE: Due to the slower operation of some
motorized valves, complete valve opening or
closing may occur at slightly different
levels than indicated above.
Models with 5 or 5-M Switches
Approximate
Distance Above
Cast Line
Differential
Setting
In. (mm)
In. (mm)
Valve Full
2
3
/
16
(56)
1
1
/
16
(27)
Closed
Valve Full
7
/
8
(22)
Open
Burner On
1
3
/
8
(35)
1
3
/
8
(35)
Burner Off
0
Models with 7B or 7B-M Switches
OPERATION
Maximum Pressure:
Series 93/193: 150 psi (10.5 kg/cm
2
)
Series 94/194: 250 psi (17.6kg/cm
2
)
PUMP
OFF
BURNER
OFF
BURNER
CUT-OFF LEVEL
AT CAST LINE
2
3
/
16
"
(56mm)
PUMP OFF
PUMP ON
(27mm)
1
1
/
16
"
BURNER
“CUT-OFF LEVEL”
AT CAST LINE
BURNER OFF
(35mm)
BURNER ON
1
3
/
8
"
BURNER
“CUT-OFF LEVEL”
AT CAST LINE
BURNER OFF
(35mm)
BURNER ON
1
3
/
8
"
MOTORIZED
VALVE
CLOSED
BURNER
OFF
BURNER
CUT-OFF LEVEL
AT CAST LINE
2
3
/
16
"
(56mm)
MOTORIZED
VALVE
CLOSED
MOTORIZED
VALVE
OPEN
(27mm)
1
1
/
16
"
Pump and Burner Switch Contact Ratings
Voltage
Pilot Duty Only
120 VAC
345 VA
240 VAC