Fluid Energy Controls - FEC International
Home | Accumulators | Fluid Power Products | Process Products | Int'l. Locations | Contact Us | Credit App | Request Quote | About Us | Site Map
 

  Accumulators:
 
 
 
 
 
Application Worksheet Instruction and Maintenance Manuals Technical Articles
There are 3 Insruction and Maintenance Manuals to choose from:
Surge Stop Manual • Accumulator Manual • Pre-Charging Instructions
Accumulators > Technical Data > Surge Stop Manual- Page 1 | 2 | 3 | 4 | 5 | 6 | 7

Reassembly

  1. Replace the shell in the vise, if applicable, again with protective material.
  2. Pour liberal amount of clean system hydraulic fluid into the shell to serve as a cushion. A non-toxic mineral oil can be used if the system liquid is water.
  3. With bladder assembly on bench, expel all air to completely collapse bladder and fold bladder longitudinally into a compact roll. To maintain this condition, install the gas valve core into the valve stem to prevent atmospheric air from entering the bladder.
  4. Attach the bladder pull rod to the bladder valve stem (Photo J).
  5. Pass the bladder pull rod through the shell (fluid end) opening and out through the valve stem opening, keeping the pull rod as straight as possible (Photo K).
  6. Pull the bladder pull rod out of the shell with one hand while feeding the bladder into the shell with the other hand.
  7. Remove the bladder pull rod (Photo L). Add 3 PSIG to bladder. This will inflate it and remove folds and wrinkles. Rotate the bladder to lubricate all sides.
  8. Position nameplate over the valve stem and install the valve stem washer and nut by hand (Photo M).
  9. If the surge suppressor is equipped with a screen assembly, replace it in fluid end of shell. Make sure it is seated properly and that the smooth side of the screen is toward
    the bladder (Photo N).
  10. Screw flange, complete with new “O” ring, into fluid end of shell (Photo O).
  11. After precharging (see appropriate section, replace valve cap and valve guard (Photo P).

Maintenance 25, 40, 80, 100 and 120 gallon surge suppressors
Disassembly

Note: these large size surge suppressors may require a suitable “A” frame with hand crank hoist.

  1. Close shut-off valve; thereby, isolating the surge suppressor from the system.
  2. Open bleed valve to completely exhaust residual liquid pressure.
  3. Remove four socket head cap screws and valve guard (top of unit).
  4. Remove gas valve cap and open gas valve to release all gas pressure from bladder assembly.
  5. Remove gas valve, needle valve and pressure gauge from valve stem of bladder assembly.
  6. Install bladder puller with 1/8" NPT into appropriate port on valve stem. Bladder puller consists of an eye bolt with 1/8" NPT Male thread on shank and a length of 3/16" diameter nylon rope approximately six feet long (which is tied to the eye bolt).
  7. Holding the bladder puller, remove locknut (gas end) and remove from shell. Then push valve stem assembly into shell, lowering it approximately six to eight inches from opening. Secure rope to nameplate bracket. CAUTION: DO NOT ALLOW WEIGHT OF VALVE STEM ASSEMBLY TO DROP INTO SHELL.
  8. Insert hand into opening (gas end) and remove plate from the shell.
  9. Insert hands into shell and remove anti-extrusion (rubber) ring by passing ring over the rope to the outside of the shell. (NOTE: Anti-extrusion ring must be bent at the middle and held at an angle to clear the shell opening.) Untie rope and remove attached parts.
Fluid Energy Controls - FEC International Fluid Energy Controls - FEC International Fluid Energy Controls - FEC International
Photo G Photo H Photo I