UNIT PREVENTIVE MAINTENANCE\
In freezing weather. especially
ensure the vent
valve in the manhole is protected by
being located under the Fill PLUGHINGE.
Bolts and nuts are
Check the manhole gasket
for damage and replace
loose or missing
if necessary. Check for dents, cracks or breaks.
Cracks or breaks
Repair or replace defective
manhole cover and filler
exist. Cover gasket.
cover. Ensure that the manhole
manhole cover or
filler cover are
is tight. Check to see that the manhole cover hinge
and cam close tightly.
Check for signs of leakage around the valve handle
Valve leaks, Valve or
shaft. Check Coupling
gaskets for cracks. Inspect
for secure connection.
is worn or damaged.
by observing the internal
valve mechanism as the
handle is moved to ensure handle operates valve.
Replace damaged valve or handle lever.
Inspect cable for frayed, worn or corroded
Cable is missing or
Replace defective cable.
a. Thissection contains troubleshooting
for locating and correcting
which develop in the tank dispensing unit that are within the scope Of unit maintenance.
for an individual
unit or system is followed
by a list of tests or
inspections to help determine corrective
actions for specific malfunctions.
and corrective actions in the order listed.
This manual cannot list all malfunctions
that may occur, or all tests or inspections and
corrective actions. If a malfunction
is not listed or is not corrected by listed corrective
notify, your supervisor.