#Bio25 11 – 140813
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8. Trouble Shooting Guide
Symptom: Tank cleaning machine will not clean
Possible causes are:
1. No or insuffi cient liquid fl ow
a. Check fl uid supply to insure that pressure and fl ow as per the operating
curves are being observed. For this to be properly accomplished, you
should install a pressure gauge as close to the machine inlet as possible,
not further from the tank cleaning machine than 4,5 m or 15 feet.
2. Tank cleaning machine inlet is blocked.
a. Check inlet of machine; position 1; and insure that no debris or particles
is present. Remember that it was advised earlier in this manual (page 7)
to employ a 100 micron fi lter.
3. Tank cleaning nozzles are blocked.
a. Remove the nozzles; position 18/28 and check for any foreign matter. If
present, clean the nozzles and then remount the nozzles.
Symptom: Tank cleaning machine will not rotate
Possible causes are:
4. Bevel gears are blocked.
a. If foreign matter has entered the machine and passed through the
body, it may have lodged itself in the bevel gears; position 6 and 12. To
check these areas refer to “7.4. Disassembly” on page 17 for instructions
on removal of the hub. Take care to review the gearing and ensure that
there is no damage that could prevent operation.
5. Gearbox rotation is restricted.
a. If foreign matter has entered through the stator, position 6, it may have
lodged itself in the gearbox; to perform an inspection see fi gure and
disassembly instructions on page 17 and forward.
6. Worn parts; replacements required.
a. After items 1-5 above have been checked; it may be necessary to replace
parts due to normal wear associated with your type of operation (or
possible damage). One of the best ways to determine the need to
replace parts is a visual inspection of the primary wear parts as listed in
chapter “11. Spare Parts List - BIO 25” on page 27.
