DIRECT SUPPORT AND GENERAL SUPPORT MAIN-
TENANCE INSTRUCTIONS
S e c t i o n I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT
No special tools or equipment are required to
Direct and general support maintenance repair
parts are listed in Appendix D of this manual.
perform maintenance on the hypochlorination unit
by direct support and general support maintenance
personnel.
Section Il. TROUBLESHOOTING
4-3. General
1. Each malfunction listed is followed by a list of
probable causes of the trouble. The corrective
This section provides information useful in
action recommended is described opposite the
diagnosing and correcting unsatisfactory operation
or failure of the equipment and its components.
probable cause.
4-4. Troubleshooting Procedure
Malfunctions which may occur are listed in chart 4-
Chart 4-1. Troubleshooting
Corrective Action
Probable cause
Malfunction
a. Mechanical binding in meter
a. Rotate mechanism by hand to
1. Hypochlorinator cam does not
e x t e n s i o n case or defective
locate binding or wear. Replace
turn.
overload release.
worn or damaged part (para 5-6).
b. Remove meter extension case and
b. Meter defective.
observe that meter shaft does not
rotate with flow through meter.
Repair or replace meter (para 5-
6).
2. Insufficient quantity of solution
a. Suction valve not seating.
delivered. Cam rotates and pump
b. Replace valve, seat, both (para 5-
shaft moves properly.
b. Discharge valve not seating.
1).
3. Cam turns but hypochlorinator
a. Flow controller inoperative.
b. Repair balancing water valve
pumping shaft does not move.
b. Balancing water valve is defective.
c. Diaphragm valve seat the stem are
defective.
d. Backing springs on cam follower
does not exert sufficient tension
to hold diaphragm valve stem
closed .
c. Valve disc at open end of pump
shaft is worn.
