IM-P343-22 CH Issue 2
12
Fig. 14
2.4.2 Coarse setting of the PF2 switch
Position the valve at the desired switching position for PF2. Coarsely set the second
switching vane within PF2 switch sensor (5) as previously described whilst maintaining
the previous setting of the PF1 switching vane. Tighten the extension spindle (12).
2.4.3 Fine adjustment of the PF1 and PF2 switch
To achieve fine adjustment it is necessary to have some form of switching indicator device
across terminals 1 and 2 for PF1 and terminals 3 and 4 for PF2. Adjust the valve travel
position of PF1 switch sensor (5). If fine adjustment is required it can be achieved
by loosening the adjustment screw (9) and sliding the adjustment plate (4) in either
direction to achieve the desired switching position. Tighten the adjustment screw (9) to
secure the setting. This exercise should be repeated for the PF2 switch whilst
maintaining the previous setting position of switch PF1 (refer to Fig. 6).
2.4.4 On completion of setting PF1 and PF2 switches refit the travel indicator disc, washer and
domed nut (refer to Fig. 14).
Indicator disc
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