Johnson Controls P70 Serie Manual Del Usuario página 5

Figure 8: Adjusting P70, P72, and P170 Controls for High Pressure Applications
IMPORTANT: After mounting and wiring
control, attach a reliable set of gauges to the
controlled equipment, and operate the equipment
(at least) three cycles at the pressures necessary
to verify control setpoints and proper equipment
operation.
Manual Reset Operation
Pressure controls with the Manual Reset option lock
out when they reach Cutout pressure and must be
manually reset by the user to restart the controlled
equipment. The manual reset mechanism is
trip-free and cannot be overridden by blocking or
tying the reset button down.
P70, P72, P170 Series Controls for High Pressure Applications Installation Instructions
On equipment with locked-out controls, first determine
and remedy the cause of the lockout, and allow the
sensed pressure to drop at least 70 psig below the
Cutout setpoint. Then, press and release the reset
button on the front of the control to restore operation of
the controlled equipment.
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