67237
OPERATOR’S MANUAL
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
RELEASED: 5-31-01
REVISED:
(REV. D)
4-13-10
DIAPHRAGM FAILURE DETECTOR
(INTRINSICALLY SAFE COMPONENTS)
(for 1-1/2”, 2” and 3” Metallic Diaphragm Pumps with Cast Iron or Stainless Steel center bodies)
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
SENSOR DATA
Protection . . . . . . . . . . . . . . . . . . . The components meet the re-
quirements for Class 1, Divi-
sion II, Group C environment.
Voltage . . . . . . . . . . . . . . . . . . . . . 30 VDC max.
Sensor Type . . . . . . . . . . . . . . . . . Electro-Optic
Sensor Material . . . . . . . . . . . . . . . Polysulfone
GENERAL DESCRIPTION
An Aro diaphragm pump equiped with the Aro Diaphragm Failure De-
tector warns of a diaphragm failure by sensing the presence of liquid in
theairchamberof thepump. Thissystemusesaliquidsensorineachof
the two air chambers.
OPERATING INSTRUCTIONS
1. Supply voltagefor thecomponents canbe throughthe 95087cable
or through the 95088 adapter (see pinout information on page 2).
2. The cable can be connected to operate an output device as re-
quired (valve, buzzer, light, etc.).
3. To clean the sensors, disconnect the 96270-1 sensors from the
95088 adapter. Unthread the sensors from the air caps. Clean the
prism of the sensors with a mild detergent or water. WARNING:
95087 Cable
Chlorinated hydrocarbons MUST NOT BE USED for cleaning.
10 m (32.8 ft)
95088 Adapter
96270-1 Sensor (2)
See note in 5 below.
4. To reassemble, apply PTFE tape or #80725 Permatex to the
threads of each sensorand threadto theair cap. NOTE: Torquethe
sensorstoNO MORE THAN120 in. lbs (13.56Nm). Reconnect the
sensors to the 95088 adapter.
INSTALLATION AND WARNINGS
5. Note: Clean the sensors every 1,000,000 cycles or every 3 months
of use.
NOTE: The power supply cable is not furnished with the unit and must
be supplied by the customer.
ALL WIRING MUST COMPLY WITH ALL LOCAL AND / OR NATION-
AL ELECTRICAL CODES.
S Electrical codes that apply must be strictly adhered to; failure to do
so may lead to shock hazard or serious injury.
S Somelocal electrical codesmayrequiretheinstallationof rigidcon-
duit.
S The diaphragm failure detector components must be installed by a
qualified 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.
S ARO isnot responsibleforaccidents resultingfrom improperinstal-
lation of components or hardware.
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
© 2010
CCN 99856692
(800) 276-4658 FAX (800) 266-7016
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