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Page 9 of 16 PEXXP-XXX-XXX-XXXX (en)
GENERAL DESCRIPTION
An ARO® diaphragm pump equipped with the ARO
Diaphragm Failure Detector warns of a diaphragm failure by
sensing the presence of liquid in the air chamber of the pump.
This system uses a liquid sensor in each of the two air cham-
bers which will send an output signal when uid is detected.
INSTALLATION AND WARNINGS
NOTE:
ALL WIRING MUST COMPLYWITH ALL LOCAL
AND / OR NATIONAL ELECTRICAL CODES.
Electrical codes that apply must be strictly adhered to;
failure to do so may lead to shock hazard or serious injury.
Some local electrical codes may require the installation of
rigid conduit.
The diaphragm failure detector components must be
installed by a qualied electrician in compliance with all
national, state and local codes and regulations to reduce
the risk of electrical shock or other serious injury during
installation and operation.
ARO is not responsible for accidents resulting from im-
proper installation of components or hardware.
HAZARDOUS VOLTAGE. Do not attempt any service
without disconnecting all electrical supply sources.
LEAK DETECTION (DIAPHRAGM FAILURE DETECTOR)
PART LIST / PEXXX-XXX-XXX-XXEX, PEXXX-XXX-XXX-XXLX
Figure 8
LEAK DETECTION (DIAPHRAGM FAILURE DETECTOR) - PINOUT DESCRIPTIONS
96270-1 SENSOR PINOUTS
A
Pinout
Function
A +24 VDC
B Ground
C Signal
B
C
TURCK (PICOFAST) Connector PSW 3M -*/S90
Figure 7
283