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Mersey Super - Installation & Service Instructions
Page 27 of 35
Fig. 33
6.11. DESCALING THE HEATING UNIT
WARNING: ACID/WATER SOLUTION MUSTBE USED WITH EXTREME CAUTION. TAKE
CARE NOT TO SPLASH ONTO SKIN OR INTO THE EYES. WASH ANY AFFECTED
AREAS WITH LARGE AMOUNTS OF COLD WATER AND SEEK MEDICAL ADVICE.
CARRY OUT THE FOLLOWING OPERATION OUT OF DOORS. ACID/WATER
SOLUTION CAN DAMAGE FURNISHINGS ETC.
a. Gain general access -see 6.2.
b. Drain the appliance - see 6.6.
c. Remove the heating unit -see 6.10.
d. Invert the heating unit on a suitable bench or table.
e. Using rubber tube and acid resisting tanks, assemble as shown in fig.33.
f. Fill the upper container with a proprietary brand of descalent or a solution of 10 parts
water to 1 part hydrochloric acid. The water should preferably be hot, then add ACID to
WATER, not water to acid.
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm
09/12/2009
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