PASCO TD-8498A Manual de usuario
®
Instruction Sheet
012-13141B
For Use with TD-8577
Glass Tubes, Replacement
TD-8498A
*012-13141*
Spare parts for this product may be available. Please contact PASCO Teacher Support for availability and pricing.
Introduction
The TD-8498A Glass Tubes, Replacement are for use with the TD-8577 PASCO Compression Igniter.
The Replacement Glass Tubes kit includes two packets of silicone compound lubricant, two glass tubes, and
twelve O-rings: two large, two medium, and eight small. The large O-rings are replacements for the ring at the
top of the inner glass tube. The medium O-rings are replacements for the ring at the top of the piston rod where it
joins the handle. The small O-rings are replacements for the rings on the end of the Compression Igniter piston
rod and for the rings on the post that is part of the removable base. The lubricant is for the small O-rings on the
piston rod. (NOTE: The packets of silicone lubricant may be different than the examples shown.)
Caution
The inner cylinder in the Compression Igniter is thick-wall glass, but it can break if the Compression Igniter is
dropped, especially if the piston is inside the glass tube. Be careful when handling the Compression Igniter, and
always store the igniter with the piston removed from the glass tube.
Included Items Qty
Inner Glass Tube 2
Small O-ring, 3/16” ID 8
Medium O-ring, 1/4” ID 2
Large O-ring, 7/16” ID 2
Lubricant, silicone compound, packet 2
Large O-ring (2)
Small O-ring (8)
Inner Glass Tube
Lubricant (typical)
Medium O-ring (2)
®
Glass Tubes, Replacement Replacing the Inner Glass Tube
2
Replacing the Inner Glass Tube
• If the glass tube in the Compression Igniter should break, replace it
with one of the spare glass tubes.
• Hold the igniter over a receptacle to catch any falling glass and
remove the piston.
• Unscrew the removable base from the bottom, and unscrew the top
from the safety tube.
• Carefully remove any broken glass from inside the safety tube and dis-
pose of the glass properly.
• Check the condition of the O-rings and replace them if necessary.
• Screw the removable base into the bottom of the igniter. Leave the top
off the igniter.
• Carefully insert the replacement glass tube into the igniter so that the
bottom end of the glass tube fits over the post at the bottom of the
igniter.
• Replace the top on the igniter. Line up the upper end of the glass tube
with the hole in the top and then turn the top clockwise to screw it onto
the igniter. Make sure that the glass tube is firmly seated over the
O-rings on the post of the removable base.
Replacing a Large O-ring
• For the large O-ring in the top of the igniter, unscrew the top from the
safety tube.
• Remove the old O-ring. (You may need to use a small, flat-blade
screwdriver to remove the ring.)
• Place the replacement O-ring at the bottom of the hole. Make sure that
the O-ring is in the groove at the bottom of the hole.
• Replace the top on the igniter. Be careful to line up the upper end of the inner glass tube with the hole in the
top.
P
i
s
t
o
n
S
t
a
r
t
i
n
g
P
o
s
i
t
i
o
n
Safety Tube
Glass Tube
Post
O-Ring
Base
Top
Insert the glass
tube over the post
and O-rings.
To p
Glass
Tube
1. Remove
the top and
clear any
broken glass.
2. Insert the
glass tube.
3. Replace
the top.
Safety
Tube
O-ring
installed
O-ring
Removable
To p
Top View Side View
(cutaway)
Replacing a Large O-ring into the Top.
®
Model No.TD-8498A 012-13141B Teacher/Technical Support
3
Lubrication
To lubricate the small O-rings on the piston rod, tear or cut the tip off the packet of lubricant. Squeeze a small
drop (1 to 2 mm diameter) of lubricant onto an applicator (such as a toothpick, cotton-tipped swab, etc.), and rub
the lubricant onto the two small O-rings. Store the open packet in a plastic bag or a small jar (such as a pill bot-
tle).
CAUTION: Do not use a different lubricant than the kind provided.
Storage
Store the compression igniter with the piston removed from the inner glass tube.
Spare Parts
Spare parts for this product may be available. Please contact Teacher Support for availability and pricing. If you
contact Teacher Support about spare parts, please refer to the table. Do not attempt to order a spare part by its
part number.
Table 1: Parts
Teacher/Technical Support
For assistance with any PASCO product, contact PASCO at:
For the latest information about the TD-8498A Glass Tubes, Replacement, go to the PASCO web site at
www.pasco.com and enter “TD-8498A” in the ‘Search’ field.
Limited Warranty For a description of the product warranty, see the PASCO catalog.
Copyright The PASCO scientific 012-13141B Glass Tubes, Replacement Instruction Sheet is copyrighted with all rights reserved.
Permission is granted to non-profit educational institutions for reproduction of any part of this manual, providing the reproductions are
used only in their laboratories and classrooms, and are not sold for profit. Reproduction under any other circumstances, without the
written consent of PASCO scientific, is prohibited.
Trademarks PASCO, PASCO scientific, PASPORT, and Xplorer GLX are trademarks or registered trademarks of PASCO scientific,
in the United States and/or in other countries. For more information visit www.pasco.com/legal. Windows is a registered trademark of
Microsoft Corporation in the United States and/or other countries
Included Items Qty Description Part Number
Inner Glass Tube 2 TUBE, GLASS 648-11045
Small O-ring, 3/16” ID 8 O-RING, VITON, AS568A-008 638-038
Medium O-ring, 1/4” ID 2 O-RING, BUNA-N, AS568A-010 638-041
Large O-ring, 7/16” ID 2 O-RING, BUNA-N, AS568A-013 638-043
Lubricant, silicone, packet 2 LUBRICANT, DOW CORNING 11 726-054
Address: PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Web: www.pasco.com
Phone: +1 916 462 8383 (worldwide)
800-772-8700 (U.S.)
Email: [email protected]
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