Revision 3
A.
Preventive Maintenance Program
If
preventive maintenance is
to
mean anything, it must be scheduled. The very best way
to
schedule preventive maintenance
is
through the institution
of
a thorough ongoing program
using some sort
of
scheduling chart or computerized tracking system
to
check compliance.
When this is performed on a timely basis, the incidence of emergency repairs tends
to
subside.
B.
Maintenance Record Form
All maintenance personnel should document any maintenance or repairs they perform. An
hour meter provided on the control panel is helpful for this purpose. A maintenance record
form should be used to record the actual maintenance accomplished, and using the hour
meter to determine when various preventive maintenance should be accomplished.
A sample
"Maintenance Record" form is included at the end of this section.
C.
Abnormal Environmental Conditions
Operation under adverse temperature conditions, dust, corrosive vapors, or moisture requires
more frequent servicing.
1.
Freezing Conditions
To
prevent freezing
of
liquid in the fluid cylinder, and
to
inhibit lubricating oil from
becoming too viscous, you
must protect the high pressure pump from freezing temperatures.
If
exposure
to
temperatures below 32 ° F (0 °
C)
is unavoidable, provisions must be made
to
keep the pump's power end, fluid end, inlet water bag filter assembly, and plunger lubricator
from freezing.
If
water will freeze during shut-down periods, then the entire system must
be drained
to
prevent damage
to
pump and piping. A non-freezing, non-corroding liquid
must then be forced from the suction line into the pumping chambers
to
force the fluid out
of the pumping chambers (V: Winterizing Procedure in this section).
2.
Dusty Conditions
Air-borne abrasives will deposit themselves on plungers and crosshead extensions,
shortening the lives
of
plungers, packings, extensions, seals, and may be drawn through the
high pressure pump's power end breather, contaminating oil and shortening bearing life.
Make efforts
to
protect the high pressure water jetting unit against such dust and grit.
© Copyright August, 2000 NLB Corporation
5-3
To Next Page
Loading...