Convotherm OEB Series Service Handbook page 154

Service Handbook OEB/OES/OGB/OGS
Instructions – 2. Removing the drain pump:
 Attention Danger of scalding!!  There could still be water in the steam
generator.
 Attention Danger of scalding!!  The steam generator, the steam generator
pump and the surrounding parts could be hot.

Unplug both flat plugs 1 on the connection cable from the pump 2.

Remove the pump 2 from the pump holder 3 (2x hexagon screws SW5 with
washer 4)

Loosen the hose connector on the drain pump hose 5 above on the pressure
loop 6 and remove hose.

Lightly remove from the drain elbow 7 the left hose connector 8 (on the pump).

Swing the draining hose 5 with the pump outwards and empty the rest of the
water.

Remove the hose connector 8 on the drain elbow 7 on the pump 2 and
remove pump.
1 = Flat connector of connector cable
2 = Steam generator pump
3 = Pump holder
4 = Hexagon screw SW5 with washer
5 = Draining hose for pump
6 = Pressure loop
7 = Drain elbow steam generator
8 = Hose connector
9 = O-Ring Part No.: 600 52 36
Instructions – 3. Assembling the drain pump:

Assembling process is the reverse of the
removing process.
Instructions – 4. Final Check:

Switch unit on again.

Check sealed tightness of the drain pump.
Notice: Possible sources for Error code E34

Blockage of the pump wheel due to build-up between the pump casing and
the pump wheel. After cleaning, the pump can be assembled again.

Grounding fault on the water level probe.
AS/11-2011 / Item 7016567 6_04e_Steam Generator drain pump_b.doc
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