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Maintenance
Decalcification
NOTE: This procedure applies to models COS-20E
and BCS-20E only.
1. Turn the Mode Selection Switch (1) to the
STEAM mode. Wait until steam is produced.
This will ensure that the water in the steam
generator is hot.
2. Turn the Mode Selection Switch (1) to the
COOL DOWN mode and leave the door open.
Let the oven compartment cool to 150_F
(66_C). This ensures that the Drain/Flush
switch will function in STEP 8.
3. Turn the Mode Selection Switch (1) to OFF.
4. In a suitable size container, mix together the
deliming solution and hot tap water. Refer to
the following chart for the proper mixture:
Deliming
Model
Solution
COS-20E
27 oz.
BCS-20E
27 oz.
NOTE: These volumes are approximate. You
may need slightly more or less delime
solution depending on the strength of
the solution and the hardness of the
water.
5. Remove the Deliming Port Cap from the delim-
ing inlet (5). Attach the supplied Funnel and
Hose Assembly (3) to the deliming inlet.
6. Open the Deliming Port Valve (2) and pour in
the deliming mixture. Stop pouring when the
Tap Water
2-1/4 gallons
2-1/4 gallons
26
funnel stops draining. This is the correct
amount for your site.
7. Shut the Deliming Port Valve (2). Screw on the
Deliming Port Cap. Let the mixture stand for 20
minutes. In areas of the country with hard wa-
ter, allow the mixture to stand for 1 hour.
8. Depress and hold the Drain/Flush Switch (4)
in the FLUSH position for 90 seconds. This
completes the deliming procedure.
3
open
2
close
1
Figure 14
5
4
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