Boss AX1-2.5E, Operation & Maintenance Manual

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The table below gives details of all menu items, in the order that they will appear:
# Menu Item Function
Default
Value
1 COLD FILL
The required fill pressure, i.e. pump ‘cut-out’ pressure.
The recommended setting is 0.3 BAR above the static pressure
of the system (0.1 Bar per meter of static height).
For example, a 14m high installation will have a static pressure
of 1.4 Bar, making the recommended cold fill pressure 1.7 Bar.
It is not possible to enter a value higher than the current [HIGH
SET] or lower than the current [LOW SET] values.
1.0 Bar
2 HIGH SET
The high pressure alarm setting.
If the pressure in the system reaches this value, the <HIGH
PRESSURE> alarm and common alarm will be activated.
The recommended setting is 10% below the safety valve rating.
For example, if the safety valve rating is 3 Bar, the
recommended setting is 2.7 Bar.
It is not possible to enter a value lower than the current [COLD
FILL] value.
2.7 Bar
3 LOW SET
The low pressure alarm setting.
If the pressure in the system falls below this value, the <LOW
PRESSURE> alarm and common alarm will be activated, and the
pressurisation pumps will not run.
The recommended setting is 0.5 Bar below the [COLD FILL]
pressure.
It is not possible to enter a value higher than the current [COLD
FILL] value.
0.5 Bar
4 DIFFERENTIAL
The differential between the ‘cut-in’ and ‘cut-out’ pressures of
the pressurisation pumps.
The cut-in pressure will be equal to the [COLD FILL] pressure,
minus the differential pressure.
For example, if the [COLD FILL] pressure is set to 1.5 bar, and
the differential set to 0.2 Bar, the pump ‘cut-in’ pressure will be
1.3 Bar (1.5 – 0.2 = 1.3)
0.2 Bar
5 FLOOD LIMIT
The maximum continuous run time for each of the
pressurisation pumps.
If a pump runs continuously for longer than this period, the
pump will stop and a <FLOOD LIMIT> alarm will be activated.
This is to prevent the unit from pumping large amounts of
water in the event of a large leak/burst pipe.
For very large systems, this may need to be increased.
The value can be changed in increments of 10 minutes, to a
maximum of 990.
10 MINS
6 PUMP 1 COUNT
The cumulative number of pump starts for pump 1.
This is a cumulative counter, the value of which cannot be
modified. If using the engineer’s code, the counter can be reset
to zero by holding the (MUTE) button.
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7 PUMP 1 HOURS
The cumulative run time in hours for pump 1.
This is a cumulative timer, the value of which cannot be
modified. If using the engineer’s code, the counter can be reset
to zero by holding the (MUTE) button.
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