Fema DCM Series Assembly And Operating Instructions Manual page 42

5.3 Adjustment
Addition of the adjustment with setting wheels I and II provides the switching interval between the
two microswitches. Changes made at the setpoint spindle do not affect the switching interval;
the switching interval remains constant over the entire adjustment range of the spindle, the two
switching points being displaced up or down in parallel.
1. Turn setting wheel I fully CCW.
Turn setting wheel II fully CW.
The lowest switching interval is adjusted.
2. Set setpoint spindle S to a value on the scale which is central between the required top and
required bottom switching point.
3. With pressure applied, set bottom switching point with setting wheel I (a1).
4. With setting wheel II, proceed as under 3. above to set top switching point (a2).
5. If the required top and bottom switching point cannot be obtained, adjust setpoint spindle S
in the necessary direction and repeat setting as per 3. and 4. above.
Example:
Desired switching points: 3.8 and 3.2 bar
Adjustment according point 2: S = 3.5 bar
3. Set bottom switching point (3.2 bar) with setting
wheel I (turn to the right)
4. Set top switching point (3.8 bar) with setting
wheel II (turn to left).
42