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SAFETY SWITCH MAINTENANCE INSTRUCTIONS
For use with: 30-1200 Amp Type VBII Safety Switches
Danger
Hazardous Voltage.
Will cause death or
serious injury.
Turn off and lock out all power supplying this
equipment before working on this device.
Replace all covers before power supplying
this device is turned on.
5. Annual Switch Inspection
Under normal operating conditions, it is recommended to
inspect switches at least once a year or after any short
circuit event. This inspection should only be performed
on a properly isolated switch. The inspection should
include the following:
•
Check switch for dust, corrosion, or moisture.
Excessive dust, corrosion, or moisture will shorten
the life of the switch and may indicate a different type
of enclosure is required for the application.
•
Check switch bases for cracks. The integrity of
the base is important in withstanding the stresses
imposed during operation. The switch should be
replaced if cracks are found.
•
Check switch for overheating. Overheating can be
indicated by discoloration or cracks of the switch
bases, discoloration or flaking of external metal
parts, or melting or blistering of adjacent wire
insulation. The switch should be replaced if any sign
of overheating is found.
•
Check all electrical connections to the switch to
be certain that such connections are clean and
secure. Loose or contaminated connections increase
electrical resistance, which can damage insulation
and conductors and interfere with proper switch
operation. Increased electrical resistance causes
overheating of a connection.
•
Check switch grease. Safety switches are properly
lubricated at the factory. Periodic cleaning and
lubrication may be required depending on the
amount of usage and the operating conditions of the
switch.
•
Check switch for missing hardware.
•
For switches with cover gasketing and sealant,
check to ensure that the gasket has not separated
from the cover.
•
Check switch for water damage. If the switch shows
signs of water damage, it should be replaced.
6. Clean Switch
With the switch still properly isolated from the rest of the
circuit, loose hardware, dust, debris, and moisture should
be removed from the inside of enclosure. Wipe with a
clean, dry, lint-free cloth or soft brush.
Peligro
Tensión peligrosa.
Puede causar la muerte o
lesiones graves.
Desenergice totalmente el equipo antes de
instalar o darle servicio. Reemplace todas
las barreras y cubierta antes de energizar el
interruptor.
I f the amount of dust or debris is excessive, steps should
be taken to eliminate the source of the contamination
or to provide an appropriate enclosure that will protect
against the future entry of contaminants.
NOTE—Commercial cleaners and lubricants may attack
and damage the plastic insulating materials of the switch.
Such cleaners should not be used.
7. Tighten Connections
V erify that all wire connection torques conform to the
values provided in the Terminal and Wire Information
Table found on the interior label of the switch. Do not
exceed the torque values on the interior label. Over-
torqued connections can lead to the switch overheating.
8. Lubricate Components
The lubricant applied at the factory is intended to last the
life of the switch. Additional lubrication may be applied
if required by the usage or operating conditions of the
switch.
•
Line and Load contact grease: Rheolube 716CP
•
Mechanism grease: Lubriplate Aero
•
Fuse clip grease: Nyogel 760G
the indicated locations listed. Other lubricants may
not be suitable for electrical applications and could be a
detriment to the performance of the switch.
9. Cycle Switch
Before restoring power to the switch, close the door and
operate the switch ON and OFF five times. The switch
handle should operate smoothly without binding.
10. To Re-Energize Switch
With the switch handle in the OFF position:
10.1 Reconnect any cables or accessory leads
disconnected in step 4, Safety Precautions.
10.2 Replace all covers and shields.
10.3 Close and latch the door.
10.4 Turn OFF all downstream loads.
10.5 Turn ON power supplying the switch.
10.6 Turn ON the switch.
10.7 Turn ON all downstream loads.
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Danger
Tension dangereuse.
Danger de mort ou risque de
blessures graves.
Mettre hors tension et cadenasser l'alimen-
tation avant d'intervenir sur cet appareil.
Remettre tous les couvercles en place avant
de remettre cet appareil sous tension.
ONLY use the approved lubricants in
I.L. No. R500634A01
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