TST-020 PT-AIR
– REV. 2017-246
Page 14 of 14
ADDITIONAL INFORMATION
1) When requesting information on a particular lifter, please have the model number and
serial number available.
2)
CAUTION:
Always proceed with caution when opening enclosures containing electrical
wiring. Wiring is often connected to components in the cover, as well as the enclosure
itself.
3) In some cases a leak may be identified in an assembly (such as a filter or valve assembly)
but the actual cause is not apparent (neither the filter nor the valve itself are the cause). In
these cases, the leak may be caused by a cracked fitting. Cracks in fittings may be visible
but are often virtually impossible to locate except under factory test conditions. They may
appear as dark lines along the seam of female fittings, along the hex nut section of female
hose nipples, or at the base of the threads on male fittings. If a leak is traced to an
assembly and the cause is not visibly apparent, it may be best to simply replace the whole
assembly rather than a single component.
4) If any metal fittings are disassembled during testing,
always
apply thread sealant (Teflon
tape or similar product) to the male threads prior to reassembly, in order to avoid vacuum
leaks.
For plastic fittings use only Teflon tape. Liquid or paste sealants must not be used
because they may damage plastic parts.
5) When assembling fittings, do not over-tighten. After first applying adequate thread sealant
or tape, the fitting should be finger-tightened as much as possible.
A straight fitting should be tightened no more than two additional revolutions with a wrench.
An elbow fitting should be tightened no more than one and one-half additional revolutions
with a wrench.
Once an elbow or tee fitting is tightened with a wrench, the fitting should be aligned
clockwise with a wrench
6) Please note: The information that is gathered when performing a vacuum test is only valid
if the tools used to perform the test are accurate. Be sure that the tools you use are
capable of completely sealing your system.
If needed, test equipment is available from Wood’s Powr-Grip Co.
For further suggestions or information, please contact our staff at:
Wood’s Powr-Grip Co., Inc.
908 West Main
Laurel, Montana 59044
800.548.7341
406.628.8231
406.682.8354 (fax)
ALL LIFTERS MUST BE TESTED AFTER MAINTENANCE
SEE INSTRUCTION MANUAL
