Victaulic 746-LPA Series Installation And Repair Instructions Download

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22. Install the repaired Series 746-LPA Dry Accelerator assembly onto

the nipple above the isolation ball valve.

23. Close

the

-turn vent ball valve of the Series 746-LPA Dry

Accelerator.

24. Open the isolation ball valve of the Series 746-LPA Dry

Accelerator. This will set the accelerator.

25. Observe the system air pressure over a 24-hour period to confirm

system integrity. If there is degradation in system air pressure, find
and correct all leaks.

NOTE:

NFPA requires less than 2-psi/14-kPa

leakage in 24 hours.

26. Notify the authority having jurisdiction that the valve has been

placed back in service.

I-746.LPA_7

Series 746-LPA

INSTRUCTIONS FOR INSTALLING AND REPAIRING SERIES 746-LPA DRY ACCELERATORS

I-746.LPA

INSTALLATION AND REPAIR KIT INSTRUCTIONS

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Summary of Contents for 746-LPA Series

Page 1: ...essure from the actuator resulting in valve operation BILL OF MATERIALS 1 Opening Air Chamber 8 Seal Support 2 Piston 9 Button Head Cap Screw 3 Restrictor 10 Closing Chamber Seal 4 Diaphragm 11 Washer...

Page 2: ...OT BE USED ON A SYSTEM INSTALLED WITH A SERIES 746 LPA DRY ACCELERATOR INSTALLATION For proper operation and approval the valve and any accessories must be installed in accordance with the specific tr...

Page 3: ...false trip resulting in property damage CONTENTS OF REPAIR KIT Item Qty Description 1 1 Diaphragm 2 1 Check Valve with O Ring 3 1 Restrictor 4 2 O Ring 1 Close the isolation ball valve of the Series 7...

Page 4: ...the cap screw that retains the piston Keep this cap screw for re installation 9 Remove the piston the two o rings the restrictor and the diaphragm Keep the piston for re assembly Discard the restricto...

Page 5: ...around the restrictor 14 Install a NEW o ring provided with the kit into the recess in the piston that IS NOT counterbored as shown above 15 Align the recesses in the piston with the holes in the dia...

Page 6: ...ully tighten the four cap screws 21 Re apply a small amount of pipe joint compound or Teflon tape to the nipple above the isolation ball valve DO NOT get any tape compound or other foreign material in...

Page 7: ...onfirm system integrity If there is degradation in system air pressure find and correct all leaks NOTE NFPA requires less than 2 psi 14 kPa leakage in 24 hours 26 Notify the authority having jurisdict...

Page 8: ...ly cannot get pressure on the upper gauge and the button pops up immediately when pressure is introduced The Series 746 LPA Dry Accelerator is installed upside down Remove the Series 746 LPA Dry Accel...