3440-L GAUGE TOP SHELL
Currently, the 3440-L gauge top shell is manufactured from an engineering
thermoplastic designed specifically to provide high impact strength and to
offer excellent compatibility with many industrial solvents and petro-
chemicals. The top shell may be cleaned with mild (low alkaline) soap and
water. Other approved cleaning substances include: methyl, isopropyl, or
isobutyl alcohols. A cloth dampened with kerosene or diesel fuel may be
used to remove heavy soils. Avoid prolonged exposure and do not soak.
F–8
CAUTION
The use of any unapproved cleaning agents such as
methyl-ethyl-ketones, amines, and methylene chloride will
damage the top shell and void the warranty.
NOTE
In the past, the top shell was not compatible with
petrochemicals. Your
top shell is compatible with
petrochemicals only if, upon removal of the keypad, there is a
ridge around the exposed opening. If not, use only a mild soap
(such as 409™ or Fantastic™) or alcohols (such as methyl or
isopropyl) to clean the top shell.
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