-
About Descaling Rational Ovens
Rational has notoriously made their model numbers confusing. I don’t think they know that, though. For instance
- They used the CombiMaster (CM) name for ovens made in the ‘80s-to early 90s (Classic-line ovens), then again for re-engineered ovens made in the late ‘90s to early 2000s (CPC-line ovens)…and THEN AGAIN for completely DIFFERENT ovens beginning in 2004 (SCC-Line ovens). They were ALL called CombiMaster ovens (with a CM in the model number), but were COMPLETELY different from one another.
- SO, a model number CM101 oven could be an archaic 1992 model of the Classic-Line (unlikely in the U.S.), a MUCH revised 2001 model CM101 with a totally different cabinet and components…or a 2010 CM101 that bears NO similarities (internally, externally or operationally) to the preceding TWO CombiMaster 101s.
- Thankfully (in 2011), they made their NEWEST model number more distinguishable by tacking a “P” on in there so they can be called the “CombiMaster Plus”.
Have I confused you now?
W-E-L-L, they ALSO made it confusing with the Self Cooking Center moniker (using “SCC” in the model number) as well:
- There were the ORIGINAL ones made 2004-2008, which just had a CleanJet feature using detergent and rinse tablets.
- Then there were updated ones made 2008-2011 (also with CleanJet, but adding the CareControl feature and its plumbing) which used the same detergent tablets, but eliminated the rinse tablets to, instead, employ a whole new system requiring Care tablets (a mild acid)…which get mixed with water in a special drawer and pumped into the steam generator. They called this their CleanJet+Care system.
- In 2011, they completely re-engineered the oven internally, made it look different with a revised control panel, then tacked on the WE (white-efficiency) in the model number for those ovens. Those ovens also had the CleanJet+Care feature. As if they couldn’t leave well enough alone, Rational shortly followed up by upgrading their software to make the 5S units (5 Senses). THEN (wouldn’t you have guessed?) – they went back to just calling it a “Self Cooking Center” again after they added the triple-paned glass door and LED lights!
For how Rational overly reuses their model numbers and oven names, it’s no wonder that PartsTown’s library of Rational ovens is often out in left field. (partstownmayor, you can PM me on that)
ANYWAY – allow me to clarify a few things regarding the differing oven models with regards to descaling an oven. I’m talking ovens made from 2004 until NOW:
CombiMaster and CombiMaster Plus ovens –
- Yes, in BOTH, they DO have an automatic descale program, from which you pump in descaler in when it tells you to. HOWEVER, since the two ovens are DRAMATICALLY different internally – without my looking too closely at comparing the manuals, I’ll say that you should probably consult the CORRECT manual – based upon whether it’s a CM or a CMP.
Self Cooking Center ovens –
The descaling program was only available on a limited basis. So, when an SCC oven was manufactured means EVERYTHING here:
- Version E ovens (5th digit in their serial number) – made 2004-2008 – means that you have an automatic descale program immediately at your disposal. So, just like the CombiMaster (and Plus) ovens, you use a pump to put the descaler in when it tells you to.
- Version G ovens (5th digit in their serial number) – made 2008-2011 – were designed with the additional CareControl feature. As such, the CareControl tablets were intended to keep scale buildup at bey. In THOSE ovens, you only have the automatic descale program available when the oven senses that there’s significant scale built up.
FWIW: I do NOT recommend using the program since there will likely be too much scale for even the strongest chemicals to address. It will need to be scraped out by a technician.
- Version “H”, then “I” ovens (5th digit in their serial number) – made 2011-present – were ovens which have absolutely NO AUTOMATIC descale program available. If the CareControl feature hasn’t been used often enough, then a MANUAL descale will be necessary through the technician-level program. It’s NOT automatic, but a technician can individually operate components needed to drain the boiler and add the water…thus having full control over every step.
What I’m getting at is that you MUST have the correct manual to maintain your oven properly. Additionally, if you have an SCC made from 2008 to present – DO bear the expense of purchasing and using the Care tablets at LEAST once a week. Those tablets will save you potentially high expenses down the road to avoid having a technician come to perform a manual descaling process.
So now…here’s me attempting to upload the CORRECT manuals. PartsTOWN? You might want to incorporate these into your library:
Log in to reply.