Maintenance - Fisher 3570 Instruction Manual

Instruction Manual
D200137X012
Figure 9. Sectional View of a Typical Relay
NOZZLE AND LOCKNUT
USED WITH 3570C AND
3570PC POSITIONERS
40A8972‐B/DOC
CLEAN‐OUT
PLUNGER
NOTES:
1 OUTPUT PORT IS SHOWN
90 DEGREES TO THE FRONT OF
ACTUAL LOCATION.
W0700‐1/IL

Maintenance

Parts are subject to normal wear and must be inspected periodically and replaced as necessary. The frequency of parts
inspection and replacement depends upon the severity of service conditions. When inspection or repairs are required,
disassemble only those parts necessary to accomplish the task.
WARNING
Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:
D Always wear protective clothing, gloves, and eyewear.
E
R
D
G
SUPPLY
A-SUPPLY PRESSURE AREA
B-RELAY OUTPUT PRESSURE VALVE
C-EXHAUST VALVE
D-RELAY OUTPUT PRESSURE AREA
E-DIAPHRAGM HEAD ASSEMBLY
F-NOZZLE
G-RELAY RESTRICTION PLUG AS­
SEMBLY
R-FIXED RESTRICTION
F
EXHAUST
C
A
B
1
OUTPUT
3570 Positioners
September 2015
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