Convotherm OEB Series Service Handbook page 85

Service Handbook OEB/OES/OGB/OGS
Instructions – Descaling the oven:
1. Thoroughly clean the oven by running the half-automatic cleaning with the cleaning
programme „clean" (see Service Handbook 4.3.2 „Half-automatic oven cleaning or
the User manual) or the automatic cleaning with "CONVOClean system (see in
Service Handbook 4.3.3 „Automatic Cleaning System CONVOClean system (Option)
or in User manual. Afterwards, flush the oven out thoroughly with the hand shower.
2. Unit main power supply must be disconnected with an all-pole isolation switch
and ensured against switching on again! (If the fan is running  wait until it
comes to a full stop!)
3. Swing suction panel out.
4. Using CONVOCal-water mixture (3:1), spray the oven (also behind the suction panel
and especially behind the fan wheel), demoisturizing tub, oven drain, suction panel
(front and back), fan wheel, direct injection and in the gas units the heat exhanger
pipes.
5. Close the door and allow the descaler to work depending on the heaviness of scale
30 – 60 minutes.
Attention:

Do not start the unit, otherwise irreparable damage can occur to the unit.

Immediately wash off any descaler over flow with a lot of water to prevent
spots.
6. Using the hand shower, flush the oven thoroughly and intensively including behind
the suction panel, fan wheel and the heat exchangers, all oven parts, the
demoisturizing tub and the oven drain.
7. Afterwards, clean (=neutralize) the oven with the original CONVOTHERM oven
cleaner as follows:

Spray oven with CONVOClean new / forte and allow to work 10 min.

Flush the oven out again thoroughly with the hand shower.
8. Fasten the suction panel and hang the hanging rack again according to instructions.
Cross reference:

Service Handbook 4.3.2 "Half-automatic Oven Cleaning"

Service Handbook 4.3.3 "Automatic Cleaning system CONVOClean system
(Option)"

Cleaning advice in the User manual

Installation Handbook Chapter 4.1 "Water inlet"
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