Alfa Laval Toftejorg TZ-79, Инструкция по эксплуатации, Страница: 40 / 48

Trouble Shooting Guide
Symptom: Slow rotation or failure of the machine to rotate
Possible causes Action
No or insufficient liquid flow a). Check if supply valve is fully open.
b). Check if inlet pressure to machine is correct.
c). Check supply line/filter for restrictions/
clogging.
d). Remove nozzles and check for clogging. If
blocked, carefully clean nozzle without
damaging stream straighteners and nozzle
tip.
e). Remove Top cone, Guide and Impeller (see
page 20) and check for clogging in Impeller
area.
If large particles repeatedly get jammed in the
machine, install filter or reduce mesh size of
installed filter in supply line.
Foreign Material or Material Build-up Insert hex Screwdriver in screw in top of Turbine
shaft and easily turn Turbine shaft clockwise. If any
resistance is recognized, disassemble machine to
localize the cause:
a). Impeller jammed
Remove Guide and Impeller (see page 20) and
remove foreign material.
b). Turbine shaft sluggish in Main bush
Remove Gear subassembly (see page 22) and
clean Main bush.
c). Bevel gears jammed
Remove Top cone and Hub Subassembly (see
page 24). Clean teeth on Stem and Bevel gear.
d). Stem jammed/sluggish
Remove Gear subassembly (see page 22). Check
free rotation of Stem. Remove Stem (see page 26).
Remove foreign material/material build-up on Stem
and inside Main Collars. Clean Ball races and Ball
retainer with balls. Also clean Main bush.
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