5-2
s
ErvIcE
P/N 3018126_E
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
REPLACING CYLINDERS —
SINGLE PANE GLASS
When cylinders need to be replaced, the lifting
force of the cylinder must be known. The lifting
force can be determined by the data printed on
the cylinder being replaced. The following
shows the part number for the 300N and 400N
cylinders.
300N Cylinder – P/N 0412539
400N Cylinder – P/N 0406925
1. Raise the front glass to open completely.
2. Use special hand tool, shown in photo, to
compress and remove cylinder.
Note
: Cylinders cannot be removed without
special hand tool.
Cylinder
Removal
Tool
P/N 0425326
Cylinder rods must point down so
oil will lubricate the rod and seals. Failure to
lubricate will severely shorten cylinder life.
Removing a Cylinder
Cylinders are a wear item.
They are designed:
• to support the glass when fully open.
• to allow the glass to come down
(or close) slowly.
Have your Service Contractor replace the
cylinders when required.
Check each glass section monthly to
determine if support cylinders are worn
and need to be replaced. If the glass
does not stay in a raised position, have
the cylinders replaced.
Each front curved glass section weighs
about 40 lb (18 kg). To prevent glass
from falling during installation, use or
maintenance and causing injury to
customers or personnel, Hussmann
recommends one person hold the glass
in a raised position while the other
person performs cylinder replacement.
Support the front glass at all times until
cylinder is replaced or the glass is low-
ered.
