DeZurik POWERRAC R3 Скачать руководство пользователя страница 8

DeZURIK

   

R3 PowerRac

TM 

Cylinder Actuator

 

D10359 

Page 8 

August 2016

 

 

Actuator Disassembly

 

(Continued)

 

1.

 

Remove the tie rod nuts (B56) and washers (B55) from the tie rods (B54), and remove the 
cylinder cap (B50). 

2.

 

Remove the piston rod (B42)— with piston (B46) and cylinder tube (B49)— from the cylinder 
head on the housing (B1). 

3.

 

Remove the piston rod (B42) and piston (B46) from the cylinder Tube (B49). 

4.

 

Remove the piston nut (B47), the piston (B46), and the O-ring (B43) from the piston rod (B42). 

5.

 

Remove the piston seal (B44) and the O-ring (B45) from the piston (B46). 

6.

 

Remove the piston rod seal (B40) from the actuator housing (B1). 

7.

 

Remove the two cylinder tube O-rings (B48) from the cylinder head on the housing (B1) and 
from the cylinder cap (B50). 

8.

 

Remove the tie rods (B54) from the actuator housing (B1). 

Actuator Reassembly

 

Steps 1 through 7 apply to reassembly of the cylinder components. Clean and inspect all parts before 
reassembly. Worn parts, especially sealing components such as O-rings and other seals should be 
replaced. Lubricate the cylinder O-rings, other seals, and cylinder tube walls with a paint-like coating 
using one of these lubricants: 

- Dow Corning Molykote No. 44 (

recommended

- Shell Retinax AM (alternate) 

- Shell Lithall MDS (alternate) 

Refer to Figures 1 and 2 for component identification. 

1.

 

With the O-ring groove toward the piston rod, place the O-ring (B43), the piston (B46), and the 
nut (B47) on the piston rod (B42). Tighten the nut to 120 ± 10 foot pounds (163 ± 14 Nm). 

2.

 

Place the O-ring (B45) in the smaller groove of the piston (B46). Place the piston seal (B44) in 
the larger groove of the piston as far around the circumference as possible without stretching 
the seal. Angle the remaining. 

3.

 

Place one cylinder tube O-ring (B48) in the groove in the cylinder head on the housing (B1), 
and place the other O-ring in the groove in the cylinder cap (B50). 

4.

 

Place the 3-piece piston rod seal (B40) in the cylinder head of the housing (B1). Place the 
rubber seal in position first, and then place a wiper ring in position on each side of the seal. 

5.

 

Place the cylinder tube (B49) over the piston (B46) at about a 45° angle. Carefully square       
the piston into alignment with the cylinder tube, and push the cylinder tube and piston rod into 
position on the cylinder head of the housing (B1). Use care to prevent damage to the seals. 
Push the piston (B46) into the cylinder so that the piston is against the cylinder head.

 

6.

 

Apply Loctite Primer N and Loctite Stud Lock to the shorter threads on each of the tie rods 
(B54), and turn each stud as far as it will go into the housing (B1). 

7.

 

Align the holes in the cylinder cap (B50) with the tie rods (B54) and insert the cylinder cap into 
the cylinder tube (B49). Place the tie rod nuts (B56) and washers (B55) on the tie rods. 
Tighten the nuts to 16 ± 2 foot pounds (22 ± 3 Nm). 

Содержание POWERRAC R3

Страница 1: ...DeZURIK R3 POWERRAC TM CYLINDER ACTUATOR Instruction D10359 August 2016...

Страница 2: ...g with hazardous pipeline materials Handle valves which have been removed from service with suitable protection for any potential pipeline material in the valve Inspection Your R3 PowerRac Cylinder Ac...

Страница 3: ...tion 4 Lubrication 4 Open and Closed Position Stops 4 Removing Actuator From Valve 7 Actuator Disassembly 7 Actuator Reassembly 8 Mounting Actuator on Valve 10 Changing Mounting Position of Actuator o...

Страница 4: ...Pa maximum Lubrication The R3 PowerRac Cylinder Actuator is lubricated at the factory and does not require routine maintenance lubrication If the actuator is disassembled lubrication is required as de...

Страница 5: ...DeZURIK R3 PowerRac TM Cylinder Actuator August 2016 Page 5 D10359 Figure 1 Component Identification Unassembled...

Страница 6: ...DeZURIK R3 PowerRac TM Cylinder Actuator D10359 Page 6 August 2016 Figure 2 Component Identification Assembled...

Страница 7: ...operation of a powered actuator can cause personal injury or equipment damage Disconnect and lock out power to the actuator before servicing 3 Disengage the actuator from the valve shaft by loosening...

Страница 8: ...th the O ring groove toward the piston rod place the O ring B43 the piston B46 and the nut B47 on the piston rod B42 Tighten the nut to 120 10 foot pounds 163 14 Nm 2 Place the O ring B45 in the small...

Страница 9: ...the gear B8 into the housing bearing B2 so that the marked tooth on the rack B5 meshes between the two marked teeth on the gear as shown in Figure 3 11 Place the O ring B10 in the groove of the top co...

Страница 10: ...ve is installed One or more of the following four steps may be required depending upon the positions of the valve the actuator the actuator cover and the mounting position selected a Rotate the valve...

Страница 11: ...so that the gear B8 bottoms out against the lower housing bearing B2 10 Begin to tighten the adjusting screw B9A as the adjusting screw becomes snug repeat step 9 and finish tightening to 200 30 foot...

Страница 12: ...n Adjust only the left side lock screw to lock the actuator in the closed position Adjusting the wrong screw does not lock the actuator and can result in personal injury or equipment damage 2 Loosen t...

Страница 13: ...from turning and turn the jam nut several turns counterclockwise to the head of the lock screw 3 Turn the right side lock screw clockwise several turns until resistance is felt from the lock screw con...

Страница 14: ...DeZURIK R3 PowerRac TM Cylinder Actuator D10359 Page 14 August 2016 Figure 4 Lockable Model Component Identification...

Страница 15: ...op See OPEN AND CLOSED STOPS Actuator will not fully operate valve Cylinder pressure is low Increase cylinder pressure Do not exceed 100 psi 69 kPa Actuator is sized incorrectly Use larger actuator Pi...

Отзывы: