PASCO SE-9788 Coin and Feather Tube User Manual
Page 4
Coin and Feather Tube
012-07193A
4
Limited Warranty
PASCO scientific warrants the product to be free from
defects in materials and workmanship for a period of
one year from the date of shipment to the customer.
PASCO will repair or replace, at its option, any part of
the product which is deemed to be defective in
material or workmanship. The warranty does not
cover damage to the product caused by abuse or
improper use. Determination of whether a product
failure is the result of a manufacturing defect or
improper use by the customer shall be made solely by
PASCO scientific. Responsibility for the return of
equipment for warranty repair belongs to the
customer. Equipment must be properly packed to
prevent damage and shipped postage or freight
prepaid. (Damage caused by improper packing of the
equipment for return shipment will not be covered by
the warranty.) Shipping costs for returning the
equipment after repair will be paid by PASCO
scientific.
Address:
PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone:
(916) 786-3800
FAX:
(916) 786-8905
e-mail:
Web site:
www.pasco.com
The exclamation point within an equilateral
triangle is intended to alert the user of
important operating and safety instructions
that will help prevent damage to the
equipment or injury to the user.
Maintenance
End Pieces
If necessary to achieve a vacuum, you may apply a
small amount of Dow Corning vacuum grease to the
small O-rings on the end pieces. Take care to avoid
getting any of the grease on the inside of the tube
under the end pieces, because the objects inside will
stick to it.
Syringe
• Glycerin may be used on the plunger, but
normally, no lubricant is required.
Caution:
• Do not use any petroleum-based lubricant on the
syringe. The plunger is very intolerant to
petroleum-based substances.
Tube
If you notice any scratches on the inside of the tube
caused by debraiding by the coin, you may want to
switch to a play-money plastic coin.
Safety Considerations
Removing a Static Electric Charge from the Inside of
the Tube
A build-up of static electricity on the inside wall of the
tube will cause the Styrofoam peanut to stick to the
tube wall or be impeded in its fall through the
vacuum.
To remove the static electrical charge, humidify the
interior of the tube by putting a damp tissue inside it
and sealing the ends several hours before the
demonstration.
This set is intended to be used by teachers, and
their students while working under appropriate
supervision.
Any liquids entering the pump are apt to be discharged
as a mist or spray. Only safe liquids such as water
should be allowed to be used in association with the
pump, and safety eyeware is definitely required.
The tube should be used only with the furnished
end pieces. Attempting to evacuate the chamber
while in contact with other surfaces could cause
damage. Severe injury will result from evacuating
the chamber while in contact with skin.
Do not put items in the tube that would be
damaged by, or cause damage as a result of,
reduced pressure. Examples would include sealed
containers, wrist watches, batteries, etc. Certainly
animals should not be placed in the bell jar, for
reasons of law and human decency.
Do not use the apparatus if the bell jar or bottom
plate have become cracked or otherwise damaged.