Leak
Leak
Leak Detectors
Detectors
Detectors
Leak detectors are sensors that are mounted in the
air covers of the pump to monitor for fluid leakage
caused by a diaphragm rupture. Leak detectors
are provided with 3-A pumps and can be ordered
separately for other pumps. For leak sensor electrical
and configuration information, refer to the leak
detection system manual (3A6976).
Available leak detection kits:
Kit
Kit
Kit
Description
Description
Description
17Z666
Kit, Standard, non-ATEX, 2 sensors, 2
bushings; provided with 3-A pumps
17Z667
Kit, ATEX, 2 sensors, 2 bushings, 2
o-rings
25P303
Kit, Leak detection control box;
not approved for use in an ATEX
environment
25P305
Kit, Leak detection control box mounting
bracket and mounting hardware
Leak
Leak
Leak Detector
Detector
Detector Testing
Testing
Testing
1.
Obtain a small container of the material being
pumped.
2.
Perform the
Pressure Relief Procedure, page 9
.
3.
Unscrew and remove both leak detector bushings
(with installed leak detectors) from the air side
diaphragm covers.
4.
For each leak detector, dip the bushing, with
the leak detector still installed, into the material
container in an orientation that mimics how it
would be oriented in the air side diaphragm
cover. Observe whether the leak detector senses
the presence of the material.
5.
If the leak detector successfully detected the
material, clean the bushing and leak detector
and re-install the leak detector and bushing
as described in step 6. Ensure that both leak
detectors successfully detected the material
before installing.
NOTE:
NOTE:
NOTE: If the leak detector fails to sense the
material, troubleshoot the leak detector to see if
the leak sensor has failed or the leak detector is
unable to detect the material.
6.
To install the leak detector to the pump:
a.
If the leak detector needs to be installed in
the bushing, simply screw the leak detector
in just past finger tight.
NOTE:
NOTE:
NOTE: If using the ATEX leak detector,
install the o-ring onto the leak detector before
installation into the bushing.
b.
If the bushing is not installed in the air side
diaphragm cover, screw the bushing into the
air side diaphragm cover.
c.
If the leak detector was disconnected from
the monitoring device, re-attach the leak
detector wires to the monitoring device.
7.
Repeat steps 3–6 for the other leak detector.
Leak
Leak
Leak Detector
Detector
Detector Removal
Removal
Removal
1.
Follow the
Pressure Relief Procedure, page 9
.
2.
Note the connection locations of the leak
detector wires within the monitoring device, then
disconnect the leak detector wires.
3.
Remove the leak detector from the bushing in the
air side diaphragm cover.
4.
If desired, repeat to remove the other leak
detector from the other air side diaphragm cover.
Leak
Leak
Leak Detector
Detector
Detector Installation
Installation
Installation
1.
If the leak detector needs to be installed in the
bushing, simply screw the leak detector in just
past finger tight.
NOTE:
NOTE:
NOTE: If using the ATEX leak detector, install the
o-ring onto the leak detector before installation
into the bushing.
2.
If the bushing is not installed in the air side
diaphragm cover, screw the bushing into the air
side diaphragm cover.
3.
Wire the leak detector to the monitoring device.
3A6781D
21
