Teral SJ4S, Инструкция по эксплуатации

Страница: 17 / 24

3-5
5．Maintenance and inspection
５.１ Cautions for maintenance and inspection
（1）When carrying out daily inspection，carefully observe the following instructions．
① If pump discharge pressure，current，noise or vibration are markedly different
from normal，it is a sign of trouble．In such a case，refer to ”5.4 Periodic
Inspection Table”and take prompt corrective action．
For this purpose，it is recommended to keep a log book．
② If bearing temperature rises to an abnormally high，stop the pump and inspect the bearing．
The maximum allowable temperature difference between the bearings and room temperature
is 40℃.
③ Mechanical seal may cause a high-frequency sound irregularly by using as a shaft seal,
but no problem with pump quality.
④ In case the pump is equipped with a mechanical seal，there should be practically no
dripping（leakage）of water from the seal．If the mechanical seal does leak
significantly，replace it．
⑤ Make sure there is no abnormally high temperature when a gland packing is used as shaft
seal. Too little leakage rate may cause abnormally high temperature.
⑥ Keep the cocks of the pressure gauges and compound gauge closed at all times，
except when they are used during inspection．
⑦ When power failure，turn off the power supply without fail．Otherwise the
pump could suddenly start up when the power supply is resumed，which will be
dangerous．
Before inspecting the pump，always turn off its main power
supply．
Otherwise the pump could suddenly start up in auto operation，
exposing personnel to great danger.
Do not run the pump at closed valve operation for
longer than 5 minutes．If do，the water inside the
pump will heat up，resulting in accident or trouble.
5 - 1