Enovation Controls Murphy 20.SS Serie Instrucciones De Instalación página 4

WARNING:
BEGINNING INSTALLATION
The 20.SS 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 20.SS 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 reset 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 20.SS to the machine. The mounting
bracket should be thick enough to prevent induced
acceleration/vibration upon the 20.SS. 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 20.SS 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 all
appropriate electrical connection codes and
methods. Ensure that 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
20.SS 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.
STOP THE MACHINE AND DISCONNECT ALL ELECTRICAL POWER BEFORE
STOP THE MACHINE AND
4
Installation
Sensitivity Adjustment
WARNING:
BEFORE OPENING THE ENCLOSURE.
IT IS YOUR RESPONSIBILITY TO
HAVE A QUALIFIED PERSON PERFORM
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 20.SS models are adjustable over 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. 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
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. Then turn
the sensitivity adjustment ¼ turn clockwise (less
sensitive), and 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.
revision K, 2018-09-17
catalogue section 20
REMOVE ALL POWER
MAKE THE AREA NON-
yi5152