Siemens VBII Instructions D'entretien page 3

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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.
Special Lubrication Instructions for
Unusual Operating Duties
1. Introduction
Safety Switches used in some operating duties require
additional maintenance or more frequent inspections to
ensure the full life of the product is achieved. Switches
used in solar (PV), compressor, or other cyclic loading
conditions are examples of these unusual operating
duties. In addition to the maintenance guidelines listed
above, these switches may also require lubrication of the
fuse connections.
2. Safety Precautions
The inspection and preventive maintenance of switches
in service require the user to take all necessary
precautions to avoid being injured. Electrical equipment
should be installed, operated, serviced, and maintained
only by qualified personnel. Work practices described in
NFPA 70E must be followed at all times.
2.1 Operate the switch to the OFF position.
2.2 Turn OFF and lock out all power supplying the switch
to electrically isolate it from all other circuits before
performing any work on or inside the switch.
2.3 Open the enclosure door and verify that there is
no voltage on the incoming and load conductors
(including control power conductors, if present) and
between these conductors and ground to confirm
that the equipment is de-energized.
2.4 Always use a properly rated voltage sensing device
on all line side and load side terminals to confirm the
switch is OFF.
2.5 If disconnection of power and accessory leads,
cables, or bus bars is required, be sure to properly
identify all connections to ensure safe and accurate
reconnection.
3. Inspection
3.1. Remove the installed fuses.
3.2. Visually check the fuse connections for evidence of
overheating or arcing on the fuse clips or mounting
arrangements for the fuse.
3.3. If the connecting surfaces show evidence of
overheating, the affected parts of the switch (line
base and/or load base) and any discolored fuses
should be replaced.
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.
4. Clean and Lubricate Fuse Clips
4.1. Clean the fuse clips with a clean, dry, lint-free cloth.
4.2. Using a small brush or putty knife, apply a thin coat
of Nyogel 760G across the entire inside surface of
both sides the fuse clip as shown below.
30-60A
Ferrule Type
Fuse Clip
Apply Nyogel
760G to shaded
area of fuse clip
100-200A Blade Type Fuse Clip
Apply Nyogel
760G to shaded
area of fuse clip
3 / 4
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.
I.L. No. R500634A01