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Parts Sheet #0510-4003_13_BC212ps
BC212
Switches– 4
MAINTENANCE
The Band Cylinder
®
should be kept as clean as possible around the bands
and Carrier Bracket.
LUBRICATION
All Tolomatic Band Cylinders are prelubricated at the factory. To ensure
maximum cylinder life, the following guidelines should
be followed.
1. Filtration–
We recommend the use of dry, filtered air in our
products. ‘Filtered air’ means a level of 10 Micron or less. ‘Dry’
means air should be free of appreciable amounts of moisture.
Regular maintenance of installed filters will generally keep excess
moisture in check.
2. External Lubricators (optional)–
The factory prelubrication of
Tolomatic Band Cylinders will provide optimal performance
without the use of external lubrication. However, external
lubricators can further extend service life of pneumatic actuators if
the supply is kept constant.
Oil lubricators, (mist or drop) should supply a minimum of 1 drop per
20 standard cubic feet per minute to the cylinder. As a rule of thumb,
double that rate if water in the system is suspected. Demanding
conditions may require more lubricant.
If lubricators are used, we recommend a
non-detergent, 20cP @
140˚F 10-weight lubricant.
Optimum conditions for standard
cylinder operation is +32˚ to +125˚F (+0˚ to 51.6˚C).
NOTE:
Use of external lubricators will wash away the factory
installed lubrication. External lubricants must be maintained in a
constant supply or the results will be a dry actuator prone to failure.
3. Sanitary environments–
Oil mist lubricators must dispense ‘Food
Grade’ lubricants to the air supply. Use fluids with
ORAL LD50
toxicity ratings of 35 or higher such as Multitherm® PG-1 or
equivalent.
Demanding conditions can require a review of the
application.
CARRIER BRACKET ADJUSTMENT
The tracking tension on the Carrier Bracket may be adjusted by tightening
or loosening the two shoulder bolts and nuts on the bracket. To tighten or
loosen the bolts on the BC212 Band Cylinder® models, use an open-end
wrench and Allen wrench. Tighten the nut on the shoulder bolt until there
is no lateral movement of the bolt. Then, equally tighten each nut on the
shoulder bolts while moving the carrier by hand along the length of the
stroke. When all lateral play in the carrier is eliminated and free movement
along the length of the stroke is maintained, the carrier bracket is adjusted
properly.
CAUTION:
Make certain not to overtighten the Carrier Bracket
adjustment screws. It is possible to tighten them enough to keep the
Carrier and Piston from moving. Tightening the Carrier Bracket directly
affects the cylinder’s breakaway. The tighter the adjustment the higher
the breakaway.
CUSHION NEEDLE ADJUSTMENT
Adjust the cushion needles in the cylinder heads carefully to obtain
a smooth, hesitation free deceleration for your particular application.
If there are questions on proper adjustment, please consult
Tolomatic, Inc.
Some actuators may require
switch mounting on a specific
side of the assembly. Call
Tolomatic for details.
REPLACEMENT OF QD SWITCHES
MANUFACTURED BEFORE JULY 1, 1997:
It will be necessary to replace or
rewire the female end coupler.
Female Connector 5M
