Lesson 2/Learning Event 2
LEARNING EVENT 2:
DESCRIBE OPERATION CHECKS
AND SERVICES REQUIRED FOR
THE TANK-UNIT ASSEMBLY AND
PERSONNEL SHOWER UNIT ASSEMBLY
As with the pump-unit assembly, the operator will perform before-, during-,
and after-operation maintenance on the tank-unit assembly and the personnel
shower unit assembly.
In this learning event we will discuss which
components of the tank-unit assembly and the shower unit assembly are
serviced during each phase of operator maintenance.
Use the following steps to perform before-operation services on the tank-
unit assembly and the shower unit assembly.
Step 1. Check for foreign objects or sediment in the tank. See that the
exterior of the tank-unit assembly is clean. Clean if necessary. Close the
tank drain valve and fill the tank with water. Check for leaks.
Step 2. Check that the hoses are free of damage or cuts.
Make sure there
are gaskets in the couplings while connecting hoses
connections. Replace gaskets, if necessary.
Check the hopper-blender for obvious damage or foreign material
plugging the bottom mixer. See that the strainer is serviceable.
Step 4. Check the foot valve for damage, corrosion, or blockage, and that
it is securely mounted to the skid base.
Check that the drain valve operates freely and has been lubricated.
Check the shower unit for the following:
All sections are complete and stowed properly in brackets.
Threaded end and coupling fittings are not burred or damaged.
Cleanliness of pipes, spray holes, and the sediment strainer.
Ease of assembly (threaded connections).