P.8
3.4.2 Cooling water
1. Close [facility] water supply to stop water supply to the pump, then close water
return valve. Follow [facility] procedures for locking these valves in the off
position.
2. Push the knurled outer ring of the quick-connect couplers toward the pump to
disconnect the water hoses. Carefully remove the male coupling valves
from the hoses and remake the quick-connects to drain the pump lines. Have
a catchment vessel and absorbent cloths at hand before removing the
couplings.
3. Make sure water outflow stops from both the facility lines and the pump.
3.4.3 Nitrogen (N
2
)
1. Close [facility] nitrogen supply valve and follow facility procedures for locking
this valve in the off position.
2. Verify that the nitrogen pressure gauge (on front panel of the pump) drops to 0
MPa, confirming that no pressurized gas energy is stored in the pump.
3. Pull out the red detent ring on the N
2
regulator.
4. Turn knob counterclockwise until pressure gauge reads 0 MPa. (Both N
2
regulator knob and nitrogen pressure gauge are located on front panel of the
pump.)
5. Disconnect tube connection of N
2
supply line by turning tube nut
counterclockwise.
6. Plug (cap) ¼” tube connector on the pump with a tube fitting cap.
3.4.4 Returning to Service
1. Unlock and open water and nitrogen valves.
2. Remove handle stop bracket and switch circuit breaker on.
3. Restrart pump and open foreline valve only after appropriate leak checks and
safety verifications.
PM10U
EBARA
CORPORATION
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