SOR Mini-Hermet Hermetically Sealed - Manual (Page 2)

2/4 Form 1444 (03.13) ©SOR Inc.
Replacement Instructions

Relieve range spring pressure by unscrewing the adjusting nut or screw counter
clockwise.

Remove the high port after removing the bolts and nuts.

Remove all internal parts from the sensing assembly and discard the diaphragm
and o-rings. The low piston shaft can be removed to aid in removing the o-ring.

Thoroughly clean all metal parts in a quick-drying solvent that leaves no residue.
Blow completely dry with clean, dry air or gas.

Install new o-rings and diaphragms with the low port facing upwards.
Follow these instructions:
a. Insert the small o-ring into the low port. Insert the low piston shaft through
this o-ring.
b. Insert the low piston into the low port. Make sure the round edge is facing the
diaphragm. Insert the o-ring into the groove in the low port.
c. Lay the diaphragm over the low piston, aligning holes with low port. The
primary diaphragm may be black, transparent or metallic, depending on the
diaphragm option.
d. Center the high piston over the diaphragm. Make sure the round edge is facing
the
diaphragm.
e. Insert the o-ring into the high port.
f. Place the high port over the high piston and insert bolts. Make sure the o-rings
and high piston are in their recess.
g. Tighten the bolts and nuts in a cross pattern to 32 in/lbs of torque.