Emerson 66R Manual de instrucciones descargar pdf (Pagina 7)

Types 66R and 66RR

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1. Remove the closing cap (key 22), and turn the adjusting

screw (key 35) counterclockwise to remove all

compression from the control spring (key 6).

2. Remove the adjusting screw (key 35) and change the

control spring to match the desired spring range.

3. Install the adjusting screw (key 35) and refer to the

Startup section for adjustment.

4. Install a replacement closing cap gasket (key 25), if

necessary, and reinstall the closing cap (key 22).

5. If the spring range was changed, be sure to change the

stamped spring range on the spring case nameplate.



1. Remove the closing cap (key 22) and the adjusting

screw (key 35).

2. Remove the hex nuts (key 23, not shown) and cap

screws (key 24), lift off the spring case assembly

(key 3) and remove the control spring (key 6).

3. Remove the diaphragm (key 10) plus attached parts by

tilting them so that the pusher post (key 8) slips off

the lever assembly (key 16). To separate the diaphragm

assembly (key 10) from the attached parts, unscrew the

diaphragm plate cap screw (key 38) from the pusher

post (key 8). If the only further maintenance is to

replace the diaphragm parts, skip to step 7.

4. To replace the lever assembly (key 16), remove the

machine screws (key 17). To replace the stem

(key 14), perform Body Area Maintenance procedure

step 3, and pull the stem (key 14) out of the guide insert

(key 18).

5. Install the stem (key 14) into the guide insert (key 18)

and perform Body Area Maintenance procedure steps 6

and 7 as necessary.

6. Install the lever assembly (key 16) into the stem (key 14)

and secure the lever assembly (key 16) with the machine

screws (key 17).

7. Reassemble the diaphragm parts as follows:

• Pusher post (key 8)

• Diaphragm head gasket (key 45)

• Diaphragm head (key 7)

• Diaphragm (key 10)

• Diaphragm head (key 7)

• Lower spring seat (key 50)

• Washer (key 36)

• Diaphragm plate cap screws (key 38)

Secure using 5 to 6 foot-pounds (7 to 8 N•m) of torque.

8. Install the pusher post (key 8) plus attached diaphragm

parts onto the lever assembly (key 16).

9. Install the spring case (key 3) on the diaphragm casing

(key 4) so that the vent assembly (key 26) is correctly

oriented, and secure it with the cap screws (key 24) and

hex nuts (key 23, not shown) ngertight.

10. Install the control spring (key 6) and the adjusting

screw (key 35) in the spring case (key 3). Turn the

adjusting screw (key 35) clockwise until there is

enough control spring (key 6) force to provide proper

slack to the diaphragm (key 10). Using a crisscross

pattern, nish tightening the cap screws (key 24) and

hex nuts (key 23, not shown) to 160 to 190 inch-

pounds (18 to 21 N•m) of torque. To adjust the outlet

pressure to the desired setting, refer to the Startup

and Adjustment section.

11. Install a replacement closing cap gasket (key 25) if

necessary, and then install the closing cap (key 22).

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A Type 66R or 66RR relief valve has a serial number

stamped on a nameplate attached to the diaphragm case.

When corresponding with your local Sales Ofce, always

refer to this serial number. Also, when ordering replacement

parts, give the complete 11-character part number of each

needed part as found in the following parts list.

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



  

1 Body

Cast iron (not for use with sealing

diaphragm)

2 NPT 2K556819012

CL125 FF anged

NPS 2 (DN 50) 2K557019012

NPS 3 (DN 80) 2K557219012

NPS 4 (DN 100) 2K557419012

Cast iron for use with sealing

diaphragm (Type 66R only)

2 NPT 2K556719012

CL125 FF anged

NPS 2 (DN 50) 2K5569X0012

NPS 3 (DN 80) 2K557119012

NPS 4 (DN 100) 2K557319012

WCC Steel (not for use with sealing

diaphragm)

2 NPT 2L3505X0012

CL150 RF anged

NPS 2 (DN 50) 2J840122012

NPS 3 (DN 80) 2P936022012

NPS 4 (DN 100) 2N850022012

NPS 2 (DN 50) CL300 RF anged 2L4426X0012

2 Spring Case, Steel (complete with SST

drive screw) See following table

1 2 3 4 5 6 7 8 9 10 11 12

Types 66R and 66RR 1

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Emerson 66R Manual de instrucciones Pagina 7

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