IMP120-14
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RE-GAPPING PROCEDURE
Tools Needed
5/8” open end Wrench
3/16” open end Wrench (2)
gAPPIng IS fACTorY-SeT AnD CrITICAl To THe funCTIon
of THe SWITCH. THIS ProCeDure SHoulD onlY be
PerforMeD If THe Plunger HAS ACCIDenTAllY been
ADJuSTeD.
1) loosen adjustment lock.
2) Turn 5/8” hex adjustment screw In, to approximately midrange.
This puts a load on the sensor and exposes the plunger flats.
(See figure 6).
3) using a 3/16” wrench on the plunger flats and a 3/16” wrench on
the plunger hex screw, turn hex ouT from plunger until micro-
switch actuates. If microswitch has already actuated, turn plunger
hex screw In until microswitch deactuates.
4) Continue per following instructions, depending on model.
Models 171-174, 521-525, 531-535, and 540-548
Turn hex (In) an additional 1-1/2 flats from this point. This will provide
a 5-9 mil gap.
Models 680, 701-705, 356-376, 612, 616, 270, 274
Turn hex (In) 3 flats from this point (approximately 1/2 turn). This will
provide a 14-16 mil gap.
Models 183-189, 190-194, 483-489, 490-494,565-567
Turn hex (In) 1 flat from this point. This will provide a 4-7 mil gap.
ConTACT fACTorY for ASSISTAnCe WITH MoDelS
noT SHoWn Above.
Re-Gapping Procedure for J120/J120K
Figure 6
zONE HAzARDOUS LOCATIONS FLAMEPROOF
GAP AND JOINT DETAILS
Activation Plunger to adjustment screw hole gap joints: 1.140” min.
length by 0.0030” max. annular gap
Activation Plunger to guide through hole gap joints: 1.105” min.
length by 0.0030” max. annular gap
reset pivot to pivot guide through hole gap joints: 1.080” min.
length by 0.0040” max. annular gap
Adjustment shaft to shaft through hole gap joints: 1.060” min.
length by 0.0030” max. annular gap
