Stuart Turner MAINSBOOST iBOOST F200 Installation, Operation & Maintenance Instructions Manual page 21

7.14 The tank can be drained by either:
a) Isolating the mains water supply to the fill valve and using the pump to
pump the water out of the tank.
or
b) Isolating the water supply to the tank and attaching a flexible hose to the
drain valve (see Fig. 18).
7.15 Front cover and keypad cleaning: The front cover is made from acrylic
capped ABS, it must only be cleaned with warm soapy water or mild
detergent. Do not use abrasive cleaners. The front cover is supplied with
clear protective film in place, this can be removed by lifting at the edge.
7.16 Float fill valve: The float level is factory set but if in time the water level in
the tank is found to be too high, the level can be adjusted by carefully
bending the arm of the fill valve down slightly (see Fig. 19). Access the float
fill valve by removing the lid of the tank (see Section 3 – Key Features).
Fig. 19
Fig. 18
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Do not
overtighten
Drain valve