TM 9-4120-403-14
Figure 5-17. Fan Speed Pressure Control Switch (S8)
Inspection
(1) Remove four screws, pressure switch nameplate, backing plate, and gasket.
(2) Carefully pull switch enclosure far enough from unit to gain access to attachment screws.
(3) Remove two screws and lockwashers each from pressure switches (S6) and (S5).
(4) Carefully pull switches (S6) and (S5) from enclosure far enough to gain access to switches (S6) and (S5)
terminals.
(5) Tag and remove wire leads on switches (S5) and (S6).
(6) Remove two screws and lockwashers from pressure switch (S8).
(7) Carefully pull switch (S8) from enclosure far enough to gain access to switch terminals.
(8) Check that wire leads and terminal attachment screws are in place. Tighten if loose. Replace if missing.
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