Azbil Corporation
Model
KFPA
,
KFTA
- Field Mount type Pressure Indicating Controllers
35
(d) Check for any stain on inner exhaust ring (13). If it stained, clean it with a cloth
moistened with solvent.
(e) Fully dry all parts with clean compressed air.
(f) Replace if diaphragms (16) and (11) are worn or damaged.
(g) For reassembly of the pilot relay, assemble all parts in the correct order and
fasten them with screws (1) and nuts (19). Tighten all screws to uniform
tightness.
(3) Mounting the pilot relay
(a) Place the gasket at the mounting position of the pilot relay.
(b) Mount the pilot relay to the manifold with the clamping screws and the spring
washers. Tighten all screws to uniform tightness.
6-4: Removing the AUTO unit when in manual
operation
(1) Balance the A/M output pressure and transfer operation to the M mode.
(2) Apply a deviation in the direction that the AUTO output pressure decreases. (Turn
the SP knob so that SP becomes smaller than PV when in the direct action.)
(3) Set the controller proportional band at the minimum (PB < 5%).
(4) Press the CHECK button of the manual controller unit and check that the AUTO
unit output pressure is zero.
(5) Remove the AUTO units (controller unit, rate unit and reset unit).
In this case the manual output pressure will slightly fall re-adjust the manual
output pressure as required.
(6) In the case that SP is set in the remote setting mode (cascade type) and cannot be
varied, proceed as follows instead of performing the procedure of steps (2) and (3).
(a) Disconnect the link of the element and make zero the AUTO output pressure by
moving the PV pointer.
(b) Move the flapper away from the controller so that the nozzle back pressure
becomes zero.
