Convotherm OEB Series User Manual

Service Handbook OEB/OES/OGB/OGS
4.4.1 Oven descaling in units with direct injection (OES / OGS)
Check:
Descaling of the oven, demoisturizing tub and the injection in units with direct injection is
necessary when a white coating has built up on the oven walls.
Information:
i
 Clean the CONVOTHERM daily after operation and descale the oven regularly as
needed. Otherwise, layers of grease and scale can build up, that are very difficult to
remove..
 Please inform your customers of this! 
 If the oven is constantly in need of descaling, then the water quality of the customer
is not suitable and is not in accordance with the recommendations in the Installation
Handbook.
Possible causes:
 No water treatment available: Recommend that the customer use a partial
decalization system (hydrogen ionic exchanger i.e. from the company Brita)
 The partial decalization system is incorrectly adjusted or defective. Check the
system and the water quality (if necesary, have the system serviced).
Safety:
 Attention: After water softening, the treated water must have the following
qualities:
 Drinking water quality
 Residual hardness:
– min. 5°dH - max. 7° dH
– min. 9° fH – max. 13° fH
– min. 6,3° eH - max. 8,8° eH
– min.90 - max.125 ppm (USA
Notice: Descaling solution
 Vinegar or citrus acid is biodegradable.
 Otherwise use only the Convotherm descaling solutions
 CONVOCal for normal descaling  can be used by the customer.
 CONVOCal forte for heavy descaling  can only be used by a trained technician.
 For descaling the oven and its parts, mix the descaler 1:3 with water (1 part descaler
+ 3 parts water).
Attention:
 Descaler must never be heated!!
 Only spray descaler in a cooled unit <40°C.
 Remove immediately and thoroughly with a lot of water any over flow of
descaler.
 Vapors cause irritation! Ensure that there is adequate airing!!
 Do not inhale the spray mist or vapors!
Notice - Oven maintenance:
For oven maintenance, the user can spray the cooled oven with CONVOCare 1x weekly,
allow to work for 30 min. and afterwards thoroughly flush the oven with the hand shower.
 Please inform your customers of this! 
AS/11-2011 4_04e_CONVOTHERM Descaling_b
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Convotherm OEB Series Specifications

General

Brand	Convotherm
Model	OEB Series
Category	Commercial Food Equipment
Language	English