－3－
[D] Handling
1 Preparation before running
(1)Make sure to purge air in the inflatable ring on the pressure gauge(G-1) by closing
valve① and opening valve②.
(2)Purge air in the casing by opening plug③. And close plug③.
(3)Open valve④.
(4)Begin running of the cooling water pump.
2 Handling procedure of the inflatable ring
This seal is to be used in the inspection or replacement of a seal ring at sea.
In working with this seal, make sure the shaft does not rotate.
Handling procedure is as follows.
(1)Stop the propeller shaft.
(2)Close valve④ and valve②.
(3)Open valve ① gradually so that the air pressure becomes 0.3 ～ 0.6 MPa in
Gauge(G-1).
(4)Open plug③ and make sure of no water leakage from the casing.
(5)Remove the mating ring and inspect the seal ring . If necessary, replace it.
(6)After work, the reverse procedure should be performed. At this time, reconfirm
closure of valve①, and opening of valve②.
(7)Purge air in the casing by opening plug③. And close plug③.
Normally open
Normally close
Shaft rotation must be stopped before operating the inflatable ring.
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