11
C-Aire offers two styles of pressure switches on its dry pipe sprinkler compressors. The standard pressure switch is on at
70psi and off at 100psi and is not to be adjusted. The adjustable pressure switch, denoted by an U at the end of the model
number, can be adjusted per the instructions below.
PULLEY/SHEAVE ALIGNMENT AND BELT TENSION
COMPRESSOR
SHEAVE
DOWNWARD
DEFLECTION
(INCHES)
MOTOR
PULLEY
DIAMETER
SPAN LENGTH
DIRECTION
OF
FORCE AP
PLIED
SETTING THE BELT TENSION
MODEL NUMBERING SYSTEM
S500
HD
U
HOW TO ADJUST
ADJUSTABLE PRESSURE SWITCH
Turn clockwise to increase
both cut-out and
cut-in pressure
Differential adjustment,
turn clockwise to increase
cut-out pressure without
changing cut-in pressure
Summary of Contents for S1300HD
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