Lesson 3/Learning Event 2
LEARNING EVENT 2:
DESCRIBE OPERATOR CORRECTIVE
MAINTENANCE ON THE PUMP-UNIT ASSEMBLY
In the previous learning event, we discussed the corrective actions to be
taken after the probable cause has been identified. Some of the corrections
are self-explanatory, some are not. In this learning event we will describe
some of these actions in greater detail as they pertain to the pump-unit
assembly.
Operator preventive maintenance is limited to cleaning the pump and piping
with hot, soapy water, then rinsing with clear water.
Paint the exterior
surface as required.
NOTE
All the procedures described can be done at the operator level of
maintenance.
The following procedures cover
operator
maintenance
of
the
pump-unit
assembly and related components.
Maintenance of the Pump-unit Assembly, Control Panel.
Maintenance of the
control panel can be performed using the following steps.
Step 1.
Wipe all switches and gages with a lint-free cloth.
Clean the
control panel with a cloth and dry-cleaning solvent (SD).
Step 2.
Inspect all switches for loose parts or damaged wire leads.
Inspect the gages for cracked dials and loose or sticking pointers.
See
that the nameplates and the starting procedures plate are legible and
fastened to the panel. See that the panel is tightly fastened to the frame.
See that the tubing, wire leads, hoses, and tachometer shaft are connected
properly to the instruments or controls at the back of the panel, as well as
at their other terminals.
Inspect all the valve controls for ease of
operation.
Step 3.
If the fuze at the back of the control panel is burned out or
missing, replace with the spare fuze. Then replace the spare fuze with a
new fuze.
Step 4.
If the generator warning light bulb does not light replace it.
Unscrew the green lens and bezel as a unit from the light base. Press in on
the exposed bulb gently with the thumb and release quickly.
This spring
action should release the bulb.
(Or, stick some masking tape against the
bulb and pull the bulb from the socket.) Insert the new bulb in the socket.
Fasten the bulb in place by screwing the green lens and bezel into the light
base.
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