Ametek PMT 40, Руководство пользователя

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User Manual
22
Apply Po, Pc and Pu to D/P elements as follows: For pressure and compound ranges – H.P. side with L.P.
side vented. For vacuum ranges – L.P. side with H.P. side vented.
Chassis (Fig. 23)
To remove Chassis – remove element from chassis per instructions under MEASURING ELEMENT.
Remove nozzle line and feedback line from relay. Remove three chassis mounting screws. Replace in
reverse order.
To clean Flapper
– air from nozzle will deposit a gummy residue on the flapper after extended service.
This may be removed with a dry cloth or a cotton swab soaked in solvent.
THE DOOR
The door assembly may be removed by depressing upper hinge pin with a drill through hole in dust ledge.
When pin is free of hole, door may be manipulated to withdraw the lower pin from the lower ledge hole.
Pins are trapped and cannot be lost. To replace, insert lower pin in hole first. Depress upper pin and slip
under upper ledge. Manipulate door until upper pin jumps into upper hole.
Figure 23
CHASSIS MTG.
SCREW (3)
FLAPPER
SET POINT
KNOB
PROPORTIONAL
FEEDBACK ASSY.
SYNCHRONIZING
NUT
SPRING
FEEDBACK LINK
BAND ADJUSTMENT
BAND INDICATOR
CONTROL UNIT
PROPORTIONAL
BAND DIAL
FEEDBACK
LINE
NOZZLE LINE