Home › Forums › ROV › ROV Technical Discussions › Deck pack for workclass ROV to remove water in system?
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James.
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June 26, 2009 at 6:58 am #2632
delf
ParticipantHI! GUYS!
I am wondering if anybody konws any company manufactures friendly and portable deck pack which can be used to remove water in the workclass rov system hydraulic oil?
I ever try to blow the dirt oil out by compressed air, but water can not be removed completely.
cheers
June 26, 2009 at 7:31 am #23932DANFROV
KeymasterTry Mike Bisset at Specialist ROV Tooling
http://www.specialistrov.co.uk/
Specialist ROV Tooling Services Ltd
Unit 1 South Road
Insch
Aberdeenshire
Scotland UK
AB52 6XFTelephone: +44 (0) 1464 821010
Email: info@specialistrov.co.ukDan
Workocean Limited
June 26, 2009 at 10:08 am #23933mudflap276
Participantget a CJC. i use one for 2 XLX systems and it works well
June 26, 2009 at 10:12 am #23934thinsub
ParticipantFit a Cardev to system hydraulics they work really well.
June 26, 2009 at 12:28 pm #23935Participantthe info above is very useful for me.
thanks DANFROV mudflap276 and thinsubJune 26, 2009 at 4:25 pm #23936Ray Shields
ParticipantThe CJC Unit is VERY effective, Fugro Aberdeen have used them for several years. The Cardev filters are handy for fitting on TMS’s and such units that maybe dont have their oil looked at very often (or at least not as often as the vehicle which tends to be run on deck packs for deck checks etc.)
June 26, 2009 at 5:49 pm #23937ROVRatt
ParticipantNormally the hydraulic system shouldn’t get water in if the comps are of sufficient volume at the correct pressure. Are you looking for a once off solution or do you often get the oil contaminated from tooling?
If the comtamination comes from tooling consider fitting a dirty work package to the vehicle in which the toolings hydraulics are separated from the vehicles. A biggish comp with a low drain point and Cardev filter should suffice for getting rid of water in the dirty work package.
June 26, 2009 at 6:32 pm #23938James McLauchlan
ParticipantCJC is the way forward. Not only does it help save the sub but it can also cuts down on oil consumption/costs by a considerable amount.
In this imperfect world even subs without a tooling pack sometimes have a habit of sucking in water and the source is never ever found. Seen that a few times.
June 26, 2009 at 8:31 pm #23939ParticipantNormally the hydraulic system shouldn’t get water in if the comps are of sufficient volume at the correct pressure. Are you looking for a once off solution or do you often get the oil contaminated from tooling?
If the comtamination comes from tooling consider fitting a dirty work package to the vehicle in which the toolings hydraulics are separated from the vehicles. A biggish comp with a low drain point and Cardev filter should suffice for getting rid of water in the dirty work package.
Even systems with full comps with strong springs can get water in – worn seals on thrusters or hydraulic rams going in and out can suck water into the system.
Sometimes it can take ages to get a system nice and clean after constantly chasing down problem areas, meanwhile teh CJC can sit there and clean your oil for you.
We used to use a contaminated oil drum on deck (i.e. oil that came from JBs or parts of the system that appeared to be clean, and then used the CJC to suck the oil out of it and top up the deck pack (obviously contaminated oil was never put in, that was ditched). The CJC cut down the oil consumption on the system dramatically as we coudl recycle much more of it.
June 26, 2009 at 9:55 pm #23940manipulator
ParticipantJune 27, 2009 at 3:10 am #23941ParticipantNormally the hydraulic system shouldn’t get water in if the comps are of sufficient volume at the correct pressure. Are you looking for a once off solution or do you often get the oil contaminated from tooling?
If the comtamination comes from tooling consider fitting a dirty work package to the vehicle in which the toolings hydraulics are separated from the vehicles. A biggish comp with a low drain point and Cardev filter should suffice for getting rid of water in the dirty work package.
I agree the dirty power pack is a good option for tooling system. actually we get the oil contaminated from both tooling and thruster system. Deck pack maybe efficient to keep the hydraulic oil cycling and being cleaned when ROV standby on deck.
June 27, 2009 at 2:16 pm #23942ParticipantWhat ROV is it?
What we used to do was plug in the deck pack and allow the oil to drain from sub back into it and the CJC sat and cleaned all the oil in the deck pack. Then, when ready to do deck checks/dive, fill it back up from the deck pack.
June 28, 2009 at 9:50 pm #23943rovnumpty
ParticipantDelf
Some good advice here.
CJC would be the way to go for my money. They do what they say on the box.
Not so keen on Cardevs. Had one collapse one time and make a right mess of the system. Hadn’t been looked at in a long time mind you.
And NEVER use hydraulic oil in your JBs, even if it has been through a CJC filter. They don’t take all the moisture out of contaminated oil, certainly not in one pass anyway
July 1, 2009 at 5:10 pm #23944ParticipantDelf
Some good advice here.
CJC would be the way to go for my money. They do what they say on the box.
Not so keen on Cardevs. Had one collapse one time and make a right mess of the system. Hadn’t been looked at in a long time mind you.
And NEVER use hydraulic oil in your JBs, even if it has been through a CJC filter. They don’t take all the moisture out of contaminated oil, certainly not in one pass anyway
thanks rovnumpty!
that’s very useful for me!July 16, 2009 at 6:53 pm #23945James
ParticipantWe currently have a patent pending system that removes both free and dissolved water that was designed an built for offshore applications (we have several ROV applications). Please send me an email directly and I can respond with additional details along with a webcast explaining the product. The system is very small and compact with optional class 1 division 2 exp rating. I should note that the CJC system will only remove your free water since it is coalescing technology. Our system will get to less than 40 ppm in a very short amount of time. Thanks. J.D. Funk
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