Farr HD8625, Technical Manual

Page: 71 / 156

T
echnical
M
anual
hD8625 8-
5
/
8
” 35K T
ong
3.29
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 environmental 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.
s
HIPPIng
I
nstruCtIons
The following procedure lists the steps to be followed to prepare your tong for shipping.
1. If not already done remove accessories (tong jaws, load cell, torque gauge, etc.) McCoy recommends wrapping these items in
protective wrap and placing in a separate wooden crate.
2. Place the equipment on a sturdy pallet constructed of 4” x 4” cross-members and 2” x 4” flooring. McCoy recommends placing
a 2” x 6” board across the width of the tong under the legs (see Illustration 3.M.1). Ensure the pallet is large enough to accom-
modate the wooden crate containing the tong accessories.
23.
Allow the anti-corrosive coating ample time to dry - refer to manufacturer data sheets for drying times at room temperature.
24. Wrap entire assembly in 100 gauge (1 mil) corrosion-inhibiting wrap, at least 3 layers thick. Attempt to ensure that the tool
is well-sealed within the wrapping, including the bottom.
I
llustratIon
3.l.1: s
HIPPIng
I
nstruCtIons
- P
allet