Convotherm OEB Series User Manual

Service Handbook OGB/OGS
AS/11-2011 / Item 7016560 6_22e_Removing and replacing the Convection heat exchanger_b.doc
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6.22 Removing and replacing the Convection heat exchanger
Safety advice and information
Information:
The Convection heat exchanger can be removed for repairs. Normally, this is only
necessary for repairing mechanical damage on the heat exchanger or for changing
the seals.
Safety:
 Follow all the step descriptions with great care.
 After removing and replacing the heat exchanger, all connections in and
outside of the unit must be checked for tightness (Gas detector or leak spray).
 After removing and replacing the heat exchanger, the gas exhaust values
must be checked (CO less than 1000 ppm, CO
2
according to the information
in the Service Handbook instructions "6.25 Readjusting the Gas valves“).
Necessary Tools / Materials
 Hexagon socket wrench 8mm and 10mm
 Cutter
 Gas exhaust measuring instrument (with CO
2
and CO sensor)
 Electric circuit indicator
 Gas detector or leak spray
 Extractor for the fan wheel (Part. No.: 7015200)
 Aluminium tape (Part. No.: 7014001)
 Copper paste (Part. No.: small 7014005, large 7014000 (Content 250 g)
 Seals (Part. No.: see Spare part list)
Removing (Step-by-step Instructions)
Instructions:
1. Unit preparation
 Switch off the unit power supply and turn off the gas supply.
 Remove the left cover.
2. Remove the firing automatic 1
 Unplug the connection on the front side of the firing automatic 1.
 Remove the cover 2 from the firing automatic and take the firing automatic
off the gas valve 3.
3. Remove the burner blower 4
 Unplug the connection on the burner blower 4.
 Remove the nut 5 on the gas flange.
 Hang the burner blower with a string or something similar from the ceiling so
that it is not in the way when you continue to work.
i

Convotherm OEB Series Specifications

General

Brand	Convotherm
Model	OEB Series
Category	Commercial Food Equipment
Language	English