Farr 80-0420-16, Technical Manual

Page: 68 / 165

KT5500 5-
1
/
2
” T
ong
& CLInCHER® B
aCKup
S
ECTIon
C
onTEnTS
3.30
T
ECHnICaL
M
anuaL
M
aInTEnanCE
If possible, store in a sealed, climate controlled environment. If isolated storage is not available, Farr recommends storing your wrapped
equipment in a secure, out-of-the-way location, using silica gel desiccant to reduce the humidity within the wrapping. As a guideline, use
125 g. of desiccant for each cubic metre of space, or 3.5 g. per cubic foot.
c
AlculAtion
o
f
r
equireD
D
esiccAnt
1) Calculate the trapped air volume by measuring the outside dimensions of the tool to be stored, and treat that as the volume
to be stored. For example, the external dimensions of a KT20000 20” power tong are 80.25” x 50.5” x 28”, which calculates
to an approximate volume of 113500 in
3
, or 66 ft
3
(1.87 m
3
).
2) Multiply the calculated air volume, in cubic feet, by the recommended amount of desiccant per cubic foot. Carrying forth
the example used in the previous step, the required desiccant charge would be 3.5 g. x 66 ft
3
, equaling 231 g. Several
manufacturers offer silica gel desiccant in packaged quantities of 125 grams per bag, so two packages of desiccant would
be required. Please keep in mind that this is a guideline only - more or less desiccant may be required in extreme environ-
mental conditions.
For best corrosion resistance the equipment should be removed from storage and exercised on a regular basis, depending on the
storage environment. Farr recommends that for equipment stored in a salt-water maritime or exposed dusty environment, repeat steps
9 through 24 monthly. For equipment stored in isolated storage in a non-maritime environment, repeat steps 9 through 24 quarterly.
Replace desiccant packs at this time - depleted desiccant packs may be treated as regular dunnage.