Table 2-2. Unit Troubleshooting-continued
TEST OR INSPECTION
Check for clogged control tubes. Refer to Paragraph 2-68 for routing of tubes.
Remove restrictions if clogged.
Remove components from diaphragm valve (Paragraph 2-70) and check for restrictions and damaged
components. On models H-9518-1, H-9518-2, and H-9518-3, there are five diaphragm valves and each one
needs to be checked.
Remove restrictions and/or replace damaged components. If trouble persists, replace control valve assembly on
models WPES-10, WPES-20 and WPES-30. Refer to Paragraph 2-69.
Check for restrictions and/or damage in brine flow meter, backwash valve, check valve attached to backwash
valve, pipes and orifices.
If brine flow meter is damaged or restricted, remove restriction and/or replace brine flow meter. Refer to
If backwash valve and/or check valves are restricted, or damaged, remove restriction and/or replace valves.
Refer to paragraph 2-45.
If restriction or damage is in pipes and orifices, disconnect pipes as necessary and remove restriction.
Refer to Paragraphs 2-29 and 2-30.
13. INOPERABLE TDS MONITOR.
Remove monitor cover (Paragraph 2-26) and check for defective fuse, broken wires and other physical damage.
If defective, replace fuse (TM10-4610-241-10).
If wires are broken or other physical damage is noted, notify Direct Support Maintenance.
Attempt to adjust TDS monitor (Paragraph 2-26).
If monitor cannot be adjusted notify Direct Support Maintenance.
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