Darrin is mostly correct above. The compressor in LLAB is a DEVILBIS 65Gal 6.5 peak hp unit. It develops 125 psi. it has been adjusted to get 135MAX. Tie it in to the compartment Salvage air line at the engine room/AB bulkhead.
Having been involved with the 225# system since we 1st got the compressor in 1999, got a few suggestions.
1.) Regardless of whether you have qual drawings or not, DO A HAND OVER HAND and TAG the LINE in 2 places in each compartment (225psi header). Make detailed drawings for maintenance, and a not so detailed drawing for operation.
2.) Work one (1) bank to full operation at a time. You WILL have to open all joints and replace the square cut O-rings. Also overhaul the particulate filter for each bank.(it's in a different place for each bank.)
3.) DO NOT go thru the 225# reducer as you will not have the psi to do so. This reducer takes 600# and reduces to 225# for the system. DO use the 225# Reducer bypass as your entry and exit point to and from the manifold.
4.) DO NOT bring the bank up to system pressure as soon as you get the bank and the lines tight. The banks have not been hydro'ed for at least 40 years. Bring the bank up in 20-25# stages per week. Once you get to 100# stretch it out to 2 weeks per increment.
5.) DO Overhaul the GAUGE LINE VALVES on the manifold. These have a NASTY Tendency to leak. And they are on the Bank side of the manifold so they get bank pressure all the time.
Example: Say you want #3 bank working. Open the following valves in order. #3 Bank, Cross Connect#1(Fwd Stack of valves), Cross Connect #2(Aft stack of valves), 225# Reducer bypass. Now you should have air in the 225# system by the gauge on the board. NOTE: There is a dump valve on the bottom of the manifold connected to the cross-connect which is part of the 3000# ship HP AIR system. Left to right facing the manifold: HP AIR FWD, DUMP(Exhaust valve), HP AIR AFT, Dockside Charging. (I may have the last two reversed, your ship qual drawings will tell you).
To Get #6 working, you open #6 Bank, and the 225# reducer bypass.
To shut down the system just reverse procedure and blow it down using the dump valve on the hp manifold.
The 65gal compressor will bring up a bank in 4-5 hours to 125#. That is constant running. Break in the compressor for the 1st year or so according to the manufacturer spec (usually 15 on / 15 off). Put a 12" fan close (standard Navy Compartment fan)to the pump and run it on high to help keep the pump cooler. Change the oil once a month for the 1st year using straight 30WEIGHT NON DETERGENT OIL. After that 4 times a year or when ever it gets dirty. Check level frequently.
Size: The 65Gal was a gold plated bitch to get in the boat
. we had to remove the AB Ladder and mounts. and the airlock door into the crews berthing are from the mess. A smaller tanked compressor with a large pump will suffice as you will be using the banks as storage volume. If you just have a pump with motor, you can tie it directly into the compartment Salvage air line @ the FER/AB Bulkhead. Use a "T" and a valve between the 225# system and the compressor.
The topside air (horn and tools line) hull valve should be in the overhead in control, STBD side, over the edge of the NAV Table. It will be a hull stop with a drain line and valve on the drain line. If someone is on the bridge you can scare the beejesus out of the river traffic, touristas,
or just run air tools topside.
Now get cracking DINK!!!
