10 Menu Functions
11 Maintenance
Maxi - The filter which is housed in the inlet ball valve to the pump should be checked and cleaned annually.
EXPANSION VESSELS - Charge pressure should be checked annually, when the system is cold the air charge must be
equal to the cold fill pressure of the Maxi.
13
Cold fill pressure - this is the required pressure of the system when the system is cold
Alarm low - the pressure at which the low pressure alarm relay will operate. Usually set 0.6 - 0.7 bar below
the cold fill pressure.
Alarm high - the pressure at which the high pressure alarm relay will operate. Usually set 0.2 bar below the
system safety valve setting.
Usage - for information on water used in the system, no setting required - please note, to zero the usage, the
buttons need to be pressed simultaneously for 3 seconds.
minutes ) the less responsive the flood protection, set at 0.00 to disable pump failure.
prevents under shoot, decreasing time prevents over shoot.
Frequent use - this setting warns of frequent use which would indicate a system leak and will show a
warning message if in any 24hr period the unit operates in excess of the frequent use setting.
caused when pumps start.
Contrast adjust - alters the contrast of the LCD display.
O&M Maxi 1109
Fault log - Logs the last five faults
MP - Low mains water pressure
LP - Low system pressure alarm
HP - High system pressure alarm
SF - Sensor failure
DR - Leak alert due to no increase in pressure while filling
FS - Leak alert due to drop in pressure while filling
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