172-65116M-02 (CP-N) 16 Jun 2011
16
Normal operation and stoppage
1. Before operation, verify the check items 8 to 14 in “Check before startup” on page 9.
2. Operation (for valve positions, refer to the standard piping diagram on page 10)
(1) Open V
8
to allow cooling water to flow through.
(2) Turn on the switch on the pump control panel.
(3) Open V
7
and close V
5
.
(4) Put the select switch for pump operation to the “automatic” position.
(5) After starting the pump, open V
10
slowly.
(6) Adjust the cooling water flow rate to keep the temperature difference between
inlet and outlet within 10
°
C.
(7) Verify that all pressure indicators are normal.
(8) Verify the position of select switch for feed water control.
3. Stoppage
(1) Follow the same procedure as described in “Test run” 2-(10) on page 13.
(2) Verify that the pump slows down smoothly and stops quietly.
(3) If freeze-up is expected, blow condensate using a valve at the bottom of the
pump. Also blow the cooling water line.
4. Emergency
Stop the pump and operate the valves following the Stoppage procedure above.
5. Operation and maintenance
Observe the pump operation carefully, keeping the following in mind. If something
wrong is found, correct or investigate after stopping the pump. For the check
procedure and items, refer to “Maintenance and Part Replacement” on page 18.
(1) Verify that each of the pressure gauges around the pump indicates the specified
value.
Delivery pressure = Pressure adjusted during test run
(2) Inspect the bearing temperature and lubricant level periodically.
(3) Check the pump for smooth running without vibration.
(4) Verify that the cooling water flows steadily during operation and the bearing
temperature is within the specified range.
(5) Verify that there is no leakage from the mechanical seal.
