Unit Troubleshooting (Cont'd).
TEST OR INSPECTION
Inspect suction valve packing, preformed for damage
If preformed packing is damaged, replace suction valve (Paragraph 4-14)
Check movement of suction valve poppet.
If movement of poppet is restricted in any way, clean or replace it (Paragraph 4-14).
Inspect discharge valve for clog.
If clogged, clean or replace the discharge valve (Paragraph 4-14)
Inspect discharge valve preformed packing for damage.
If preformed packing is damaged, replace (Paragraph 4-14).
Check movement of discharge valve poppet
If movement is restricted in any way, clean or replace it (Paragraph 4-14).
Inspect injection valve.
Make sure scale has not formed on injection point. If scale is present, clean it off. If scale cannot be easily
cleaned off, replace injection valve (Paragraph 4-18).
Check movement of injection valve poppet.
If movement is restricted in any way, clean or replace it (4-18).
Step 10. Inspect suction hose.
Look for holes or damage If hose is damaged, replace it (4-13).
PUMP RATE SLOWS - MAINLINE FLOW RATE REMAINS CONSTANT
Remove Y-strainer and check for blockage. If blockage exists, clean Y-strainer If unable to clear blockage
completely, replace Y-strainer (Paragraph 4-21)
SECTION V. UINIT MAINTENANCE PROCEDURES.
GENERAL INFORMATION. This section contains maintenance procedures which Maintenance Allocation Chart
authorizes Unit to perform. If hypochlorination unit still does not operate properly after performing these maintenance
procedures, contact Direct Support for assistance.