Janus 3M Novec 1230 - 5.2.1 Removing The Cylinder; 5.2.2 Cleaning and Servicing The Valve Assembly

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REFILL MANUAL FOR 3M™ NOVEC™ 1230 FIRE PROTECTION FLUID
Revision E
Document # DOC181
Issued: May 31, 2011
Revised: June 23, 2020
Section 5 System Recharge and Reset
• Remove the cylinder from the bracket only after ensuring all appropriate safety measures have been
complied with and all relevant warnings noted.
5.2.2 Cleaning and Servicing The Valve Assembly
Janus Fire Systems recommends that the following steps be followed prior to refilling the cylinder(s):
Check the pressure gauge and cylinder weight to verify the cylinder is empty and at atmospheric pressure before
attempting to remove the valve. Failure to comply could result in personal injury or death from violent cylinder
movement or over-exposure to high concentrations of agent.
• Remove the top cap.
• Pull the piston assembly up and out of the top of the valve body using the piston removal tool (P/N
97642) and inspect both the piston and valve body bore for damage.
• Clean all internal valve surfaces using caution not to scratch or nick the seating surfaces.
• Hold the piston in place by carefully gripping the smaller diameter cylindrical surface with a strap
wrench or similar device (i.e., appropriate Piston Key as shown in Table. 5.2.2). Use a pin-style spanner
wrench to remove the piston cap by turning it counter-clockwise.
• Replace the lower piston O-ring around the piston cap.
• Reinstall the piston cap using the strap wrench and spanner wrench. Tighten until the cap bottoms out
on the piston body.
• Remove the upper piston O-ring on the piston body and discard.
• Lubricate the new upper piston O-ring with Molykote 55 by Dow Corning (P/N 19056) or equivalent
and install the new upper piston O-ring onto the piston body.
• Lightly lubricate the internal valve bore with Molykote 55 by Dow Corning (P/N 19056) or equivalent
and insert the valve piston into the valve body.
• Remove the valve cap O-ring and discard.
• To prevent damage to the new valve cap O-ring during installation cover the threads of the valve cap
with masking tape.
• Lightly lubricate the new valve cap O-ring with Molykote 55 by Dow Corning (P/N 19056) or
equivalent and install on the valve cap.
• Remove masking tape from valve cap threads and clean the threads on the valve cap. Carefully thread
the top cap onto the valve assembly. Tighten securely, do not apply excessive force.
• Reinstall the low-pressure supervisory switch and pressure gauge assemblies on Mv and Lv Series valve
assemblies.