
IMP100-06
Models
Flats
Approx. Gap
171-174
2-2 1/2
.0085 to .0105”
183-194
1-1 1/2
.004 to .006”
483-494
1-1 1/2
.004 to .006”
358-376
5-6
.020 to .025”
700-706
3 1/2 - 4
.014 to .017”
521-525
2-2 1/2
.0085 to .0105”
531-535
2-2 1/2
.0085 to .0105”
540-548
2-2 1/2
.0085 to .0105”
560-567
1-1 1/2
.004 to .006”
15623
5-6
.020 to .025”
A grounding screw and clamp (cast in symbol) is provided which meets
a 35 lb. pull test. Keep the wire as short as possible to prevent inter-
face with the plunger and the adjustable differential switch wheel, if
applicable.
Tools Needed
5/8” Open End Wrench
SOME MODELS HAVE A TWO-PIECE, ADJUSTABLE
PLUNGER. THIS FEATURE IS CHARACTERIZED BY A 3/16” HEX
HEAD SCREW INSTALLED IN THE 1/4” HEX PLUNGER. THE
LENGTH OF THIS ASSEMBLY IS ADJUSTED AT OUR FACTORY AND IS CRITI-
CAL TO THE FUNCTION OF THE CONTROL.
H100 and H100K
Remove pressure switch cover. Loosen Phillips screw adjustment lock.
Adjust set point by turning 5/8” hex adjustment screw clockwise (in) to
raise set point, or counter clockwise (out) to lower set point. Tension on
adjustment screw can be increased by tightening adjustment lock onto
it. (See diagram 1). Controls include uncalibrated reference scales for
high, low or mid range settings.
Adjustable Differential Models
Model 15623 and control types with option code 1519 incorporate
a snap switch with internal adjustment wheel. Turning this wheel
raises or lowers the pressure rise set point. The fall set point remains
constant. Consult factory for additional information.
Manual Reset Button
Control types with option code 1530 incorporate a snap switch which
when actuated, remains actuated until the pressure drops sufficiently
to allow the reset button (located on top of the control) to be manually
depressed to reset the switch.
Gapping
1) Loosen adjustment lock.
2) Turn 5/8” hex adjustment screw in, to approximately mid range.
This puts a load on the sensor and exposes the plunger flats. Using
a 1/4” wrench on the plunger and a 3/16” wrench on the plunger hex
screw, turn hex screw out from plunger until switch actuates. If switch
is already actuated, turn plunger hex screw in, until switch deactuates.
Turn hex screw in from this point. (See chart 1 for Flats and approxi-
mate Gap.)
3) Check set point according to Part II Adjustments.
4) Connect wires and replace cover securely.
Part II - Adjustments
Diagram 1
Chart 1