Proper oil sampling and analysis of the sample, is a
vital part of a comprehensive preventive maintenance
program. Information obtained from the oil analysis is
best utilized in conjunction with a regular program of
preventive maintenance. The early warning of abnor-
mal wear provided by an analysis program allows the
user to substitute preventive maintenance for a far
more costly and dangerous failure that may lead to loss
of load control that could result in property damage,
personal injury or death. Early detection of accelerat-
ed component wear allows the scheduling of corrective
maintenance and can reduce in-operation failures and
costly down time.
Taking A Valid Oil Sample
Prepare the hoist by cleaning the drain area and drain
extension tube in order to obtain an uncontaminated
sample. Operate the hoist in both directions for one to
two minutes and then take the oil sample from the drain
port as soon as possible. Do not take the sample from
the first oil out the drain port. Take a sample from the
mid-stream flow of the oil to obtain an accurate repre-
sentation of the oil condition. After taking an oil sam-
ple, check the oil level and add new oil as required.
Refer to the applicable Braden service manual for rec-
ommended lubricant.
Analysis
General Guidelines
(After approximately 250 hours of operation)
Iron Contaminates
100 to 500 ppm
Normal
501 to 800 ppm
Caution - Abnormal Sample (mon-
itor more frequently), tear-down
inspection may be required.
801 ppm & up
Unacceptable - Abnormal Sample
(tear-down inspection required.
In all contaminate monitoring, equally important as the
level of contamination, is the change in the amount of
contamination compared to previous samples.
OIL SAMPLING AND ANALYSIS
Hot oil may cause personal injury and/or burns to
unprotected skin. Make certain the oil has cooled to
a safe temperature (less than 110°F or 43°C) before
taking an oil sample, changing oil or servicing the
hoist.
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