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WARNING:
BEGINNING INSTALLATION
The ATEX series is sensitive to shock and vibration in
all three planes of motion - up/down, front/back and
side/side. Front/back is most sensitive.
The ATEX Series must be firmly attached / mounted
to the machine so that all mounting surfaces are in
rigid contact with the mounting surface of the
machine. For best results, mount the instrument in-
line with the direction of rotating shafts and near
bearings. In other words, the rest push button should
be mounted pointing into the direction of shaft
rotation. It may be necessary to provide a mounting
plate or bracket to attach the ATEX Series to the
machine. The mounting bracket should be thick
enough to prevent induced acceleration/vibration
upon the ATEX Series. Typically ½ in. 13mm thick
plate is sufficient.
WARNING:
DISCONNECT ALL ELECTRICAL
POWER BEFORE BEGINNING
INSTALLATION.
1. Firmly secure the unit to the equipment using the
base foot mount. For oil well pump jacks attach the
ATEX Series to the Sampson post or walking beam.
2. Make the necessary electrical connections to the
vibration switch. See Typical Wiring Diagrams. DO
NOT EXCEED VOLTAGE OR CURRENT RATINGS
OF THE CONTACTS. Follow appropriate electrical
codes/methods when making electrical connections.
Be sure that the run of electrical cable is secured to
the machine and is well insulated from electrical
shorting. Use of conduit is recommended.
NOTE: If the electrical cable crosses a pivot point such as
the pivot of the walking beam, be sure to allow enough
slack in the cable so that no stress is placed on the cable
when the beam moves.
If conduit is not used for the entire length of wiring,
conduit should be used from the electrical supply box
to a height above ground level that prevents damage
to the exposed cable from the elements, rodents etc.
or as otherwise required by applicable electrical
codes. If conduit is not attached directly to the ATEX
series switch use an approved cable gland and a
weatherproof cap on the exposed end of the conduit.
A "drip loop" should be provided in the cable to
prevent moisture from draining down the cable into
the conduit should the weathercap fail.
INSTALLATION
STOP THE MACHINE AND DISCONNECT ALL ELECTRICAL POWER BEFORE
STOP THE MACHINE AND
4
Sensitivity Adjustment
WARNING:
BEFORE OPENING THE ENCLOSURE.
IT IS YOUR RESPONSIBILITY TO
HAVE A QUALIFIED PERSON ERFORM
ADJUSTMENTS AND MAKE SURE IT
CONFORMS WITH LOCAL CODES. DO
NOT ADJUST SENSITIVITY WHILE THE
MACHINE IS RUNNING. STAND
CLEAR OF THE MACHINE AT ALL
TIMES WHEN IT IS OPERATING.
All models of the ATEX Series cover a wide range of
sensitivity.
Each model is adjusted to the specific
piece of machinery on which it is installed. After the
switch has been installed in a satisfactory location the
sensitivity adjustment must be increased or decreased
so that the switch does not trip during start up or under
normal operating conditions. This is typically done as
follows
1. REPLACE THE COVER.
2. Press the reset push button to engage the
magnetic latch. On the ATEX Series the reset push
button will remain depressed, meaning the magnetic
latch has engaged.
3. Start the machine.
4. If the instrument trips on start-up, allow the
machine to stop. Turn the sensitivity adjustment ¼ turn
clockwise.
WARNING:
HAZARDOUS BEFORE OPENING THE
FLAME -PROOF ENCLOSURES.
Depress the reset push button and restart the
machine. Repeat this process until the unit does not
trip on start-up.
5. If the instrument does NOT trip on start-up, stop
the machine. Turn the sensitivity adjustment ¼ turn
counter-clockwise. Repeat the start-up/stop process
until the instrument trips on start-up. Turn the
sensitivity
adjustment
sensitive).
Restart the machine to verify that the
instrument will not trip on start up.
6. Verify that the unit will trip when abnormal shock/
vibration exists.
th
revision D, 30
catalogue section 20
REMOVE ALL POWER
MAKE THE AREA NON-
¼
turn
clockwise
yi5152
April 2004
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