3
Points to be observed when stopping pump
• If the pump operation is stopped during cold weather, liquid in pump may freeze and damage pump. When
circulating a dangerous liquid, carry out internal cleaning by using flushing piping. Then drain the liquid
fully.
• Be sure to remove all liquid after stopping pump. In case of short-term suspension of operation, which
does not allow for removal of liquid, use band heater, etc., to prevent liquid inside from freezing.
• In event of power failure, turn off power switch and close discharge valve.
M
Stoppage
- 30 -
1
2
Check/Operation Step
• Close discharge valve gradually.
• Turn off the power and stop pump operation.
Remarks
• Do not cause sudden closure with solenoid valve,
etc., otherwise pump may be destroyed by water
hammer action which is likely in case of long
discharge piping.
• Observe carefully whether the motor fan slowly
and smoothly stops rotating.
Caution
If not, check inside of pump.
