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Electric Switch Mechanisms - Magnetrol International

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3.1.3 Single float with three switches or<br />

three stage displacer:<br />

1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 12.<br />

2. Falling level closes contacts 4 & 5 and 1 & 2.<br />

3. Unit is shipped with switches positioned for proper<br />

function. Do not change switch spacing.<br />

Upper stage operates<br />

upper switch mechanism<br />

Load<br />

Close on Low Level (NC)<br />

Common (C)<br />

Close on High Level (NO)<br />

Load<br />

Middle stage operates<br />

middle switch mechanism<br />

Load<br />

Close on Low Level (NC)<br />

Common (C)<br />

Close on High Level (NO)<br />

Load<br />

Lower stage operates<br />

lower switch mechanism<br />

Load<br />

Close on Low Level (NC)<br />

Common (C)<br />

Close on High Level (NO)<br />

Load<br />

10 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />

4<br />

5<br />

6<br />

1<br />

2<br />

3<br />

4<br />

5<br />

6<br />

Assem.<br />

B<br />

Assem.<br />

A<br />

Assem.<br />

B<br />

Figure 12<br />

Single Float with Three <strong>Switch</strong>es<br />

or Three Stage Displacer<br />

Internal<br />

Circuit<br />

Internal<br />

Circuit<br />

Internal<br />

Circuit

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