Stuart Turner MAINBOOST iTank MBI Series 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 draining the water through the
dedicated drain port (see Fig. 21).
7.15 Control module keypad cleaning: The control module cover is made from
ABS, it must only be cleaned with warm soapy water or mild detergent. Do
not use abrasive cleaners.
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 the valve screw
stem (see Fig. 22). Access the float fill valve by removing the lid of the tank
(see Section 3 - Key Features). The float height can be lowered by twisting
the valve stem anti-clockwise.
Inlet valve
Valve float
Fig. 21
- 21 -
Drain valve
Fig. 22
Height
adjustment
float stem
Cont ...