Febco 825YD Series Installation Operation & Maintenance Download Page 2

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MAINTENANCE MANUAL SERIES 825YD, 826YD, 860, 880V

STEP 6:  

Clean or replace plastic slip ring. 

Clean the brass diaphragm retainer. 

Lightly lubricate retainer threads 

with a food grade petroleum jelly or 

equal. Place slip ring into retainer. 

Screw retainer with slip ring onto 

main guide, securing inner dia-

phragm. Make sure the retainer is 

secure. 

STEP 7:

Push inner diaphragm back through 

main guide until top of the dia-

phragm is flush with the top of the 

retainer.

STEP 8:

Turn guide/diaphragm assem-

bly upside down and work disc 

holder into guide until flush with 

diaphragm.

STEP 9:

Push the disc holder through the 

guide while holding the diaphragm 

flush against the end of the holder. 

Continue until the holder stops on 

the guide. Place the assembly on 

a flat surface with the diaphragm 

facing up. 

This will ensure that excess rubber 

will roll to the inside of the main 

guide when the holder assembly 

strokes, otherwise the diaphragm 

will crack and leak. 

STEP 10:

Place flow washer on top of the 

diaphragm with cross channels fac-

ing upward (Series 860 and 880V 

ONLY). Line up the center holes, 

then place the spring into the guide. 

Summary of Contents for 825YD Series

Page 1: ...ghly clean main guide STEP 4 New inner diaphragm will come in kit with fabric side out and the bead ed flange positioned up as shown STEP 5 Position inner diaphragm over the main guide and drop into place with beaded flange fully engaging groove on main guide IOM F RV I N S T A L L A T I O N O P E R A T I O N M A I N T E N A N C E Relief Valve Assembly Instructions Series 825YD 826YD 860 880V Repa...

Page 2: ... STEP 8 Turn guide diaphragm assem bly upside down and work disc holder into guide until flush with diaphragm STEP 9 Push the disc holder through the guide while holding the diaphragm flush against the end of the holder Continue until the holder stops on the guide Place the assembly on a flat surface with the diaphragm facing up This will ensure that excess rubber will roll to the inside of the ma...

Page 3: ...r the screw head to protect the outer diaphragm STEP 12 Reassemble disc and lower the guide to the disc holder DO NOT ALLOW THE DISC HOLDER TO TURN OR TWIST DURING THIS OPERATION Clean lubricate and install main guide O ring Models 825YD and 826 YD use a Stainless Steel Lower Guide and a Disc Washer in place of the Plastic Lower Guide as shown STEP 13 Place new outer diaphragm upside down on a fla...

Page 4: ...RESS OR IMPLIED THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty and the Company shall not be responsible for any incidental spe...

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