Section 8 - Repair/Replacement Procedures; Introduction; Manifold Filters; Type Av Positioner With Manifold - ABB AV3 Instruction Manual

SECTION 8 - REPAIR/REPLACEMENT PROCEDURES

INTRODUCTION

WARNING

MANIFOLD FILTERS

Tools Required
WARNING
This section provides the operator with procedures which detail
removal and replacement of positioner components.
Make certain the positioner is disconnected from the supply
pressure source and the signal source or is removed from
service before attempting any repair or replacement proce-
dures. Failure to do so could cause unexpected movement of
the actuator and bodily injury could result.
Screw driver
1. Transfer the positioner from automatic to manual operation (refer
to Section 5).
Moving the equalizing valve to MAN or to AUTO will cause the
actuator to move if it is not locked. If unaware of the move-
ment, personal injury can occur.
2. After allowing the pressure to bleed off, remove the cover screw
securing the filter cover (Fig. 8-1) and set the cover screw and cover
aside.
AL LEN
SC R EW S
Figure 8-1. Type AV Positioner with Manifold
O 1 O 2
O 2
O 1
AU TO
I
S I
INTRODUCTION
F ILT ER
C OV ER
C OV ER
SC R EW
VA LVE
H A N D LE
T 00 73 8 A
8 - 1