Xylem MM 413F Replacement Head Mechanism With Switch Ass User Manual download pdf (Page 2)

2

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

1 2 3 4 5 6 7 8

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