Actuator Disassembly - Dyna-Flo DFR 070 Operation, Parts, And Instruction Manual

ACTUATOR DISASSEMBLY

Before You Begin:
• Read the General and Scope section of this manual (Page 2).
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Disconnect supply lines (air or gas), electric power, or control
signal to the actuator. Sudden movement of actuator can
cause damage or injury, make sure actuator will not operate.
• Vent any pneumatic actuator loading pressure.
• Relieve process pressure and drain the process fl uid from up
and down stream of valve.
• Be aware of potentially hazardous process material that may
be present in-line and in-valve. Isolate the valve from
process pressure. Use a bypass or block valve if necessary,
or completely shut off the process. Relieve internal valve
pressure (refer to the appropriate valve instruction manual).
Special Tools Required:
• Split ring pliers.
• Soft tip felt marker.
• Regulated air supply (to stroke the actuator).
• Wrenches (See Table 5 for open-end wrenches required for
turnbuckle adjustment).
• Metal rod for adjusting the spring adjuster (Key 14):
- For Size 070 Actuators - 3/8" (9.5 mm) diameter rod.
- For Size 156 Actuators - 5/8" (15.9 mm) diameter rod.
- For Size 220 Actuators - 3/4" (19.1 mm) diameter rod.
1 If the actuator has been removed from the valve and
pipeline, secure the actuator assembly in place on a fl at
work surface that will support the weight.
2 Remove any positioners installed on the actuator.
3 Remove the cover plate cap screws (Key 45) and washers
(Key 44).
4 Remove the cover plate/bushing assembly (Keys 36, 37,
38, 39, 40, 41, 42, and 43).
5 Inspect all parts for damage or wear, replace or repair
parts as necessary. All soft parts such as diaphragm and
bushings should be replaced.
Dyna-Flo Control Valve Services Ltd.
Phone: 780 469 4000
• •
Model DFR 070/156/220 Rotary Actuator
Toll Free: 1 866 396
• • •
Operation, Parts, and Instruction Manual
36
Figure 13 Cover Plate Disassembly
2356 Fax: 780 469
• •
32
39
37
41
38
39
37
4035 Website: www.dynafl o.com
44 45
36
42
38
36
43
40
P-DFR3M0919A
14