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Part # P157 Rev 2(01/06/10) Page 11
MAINTENANCE AND CLEANING continued
Servicing
To ensure ecient and safe operation of the appliance it
is recommended that servicing is carried out at regular
intervals, the frequency of which will vary, depending on the
installation conditions and usage. Usually once per year is
adequate.
Competent persons in accordance with the law must carry
out servicing.
Precautions
It is essential that the instructions in this booklet be strictly
followed for the safe and economical operation of the
equipment. If it is known or suspected that a fault exists on
the appliance then it must not be used until a competent
person has rectied the fault.