TM 10-4610-241-24
TO 40W4-13-42
Table 2-2. Unit Troubleshooting-continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PIPING INSTALLATION - continued
11. ABNORMAL CARTRIDGE FILTER DIFFERENTIAL PRESSURE GAGE INDICATION.
Check for clogged or leaking sensing lines. Refer to Paragraph 2-31.
a.
If clogged, remove obstruction.
b.
If leaking, tighten connections, and/or replace lines.
C.
If lines are not clogged and don’t leak, replace pressure gage. Refer to Paragraph 2-39.
12. INADEQUATE BRINE FLOW IN BACKWASH OPERATION.
Step 1.
Check if stager cycles (cams turn in direction of arrow).
If stager cycles, go to step 3.
Step 2.
Check for 115 VAC input voltage between contacts 1 and 2 (ground), and for a 115 VAC start signal between
contacts 4 and 2 (ground) on terminal board (vertical on models WPES-10, WPES-20 and WPES-30,
horizontal on models H-95181, H-9518-2, and H-9518-3) in timer.
NOTE
To measure start signal, it is necessary to hold element cleaning switch (S-2) to the START position.
a.
If input voltage and/or start signal are absent, notify Direct Support Maintenance.
b.
If both voltages are present, notify Direct Support Maintenance to troubleshoot timer.
2-18 Change 1
