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18
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19
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6 .15
Controller overview
The pressurisation unit controller is designed to be intuitive to use and allows
functions and alarms to be set by the installer/user . It also allows faults to be
monitored and logged to enable easier system fault diagnosis .
The functions are set using the 4 buttons (A, B, C & D) on the front of the
controller and with the help of on screen prompts via the back lit LCD display .
On the front of the APU a green ‘power on’ light will be displayed whilst the
unit is powered . If an alarm or error is raised the red ‘Error’ light will be
displayed .
A number of pressure set points can be set using the menus, these set points are
detailed below, 1 to 4 and in the description of the function .
Button A Scrolls up through menus or increases set values .
Button B Enters menus or selects values .
Button C Scrolls down through menus or reduces set values .
Button D Returns to previous menu
6 .16
Function list & explanation
The functions are contained within an initial display and 3 menus:-
Setting menu (pass code protected) see Section 6 .18 .
Advanced setting menu (pass code protected) see Section 6 .19 .
Test menu (pass code protected) see Section 6 .20 .
6 .17
Initial display
On start up, and during operation, if the APU has had no button inputs for
1 minute, a home screen (see Section 7 .11) will be displayed with system
pressure, tank water level, any active alarm and any pump that is operating at
the time . By using buttons A & C to scroll up or down the following screens will be
displayed:-
System pressure
Active errors
System fill status
Pump activity
Pump run time
Alarm reset
6 .18
Setting menu
(Pass code protected, if set)
The following functions can be set and modified:-
System pressure (2)
see Fig . 20
Sets the required system pressure.
Set in 0 .1 bar increments up
to the maximum set value for the pressurisation unit model - Midi 130
& 230 - 3 .5 bar max; Midi 150 & 250 - 4 .1 bar max .
Differential pressure (3)
see Fig . 20
Sets the pressure at which the pressurisation unit will turn
on at as the system pressure falls. Relative to the system
pressure.
Set in 0 .05 bar increments below the System pressure (2),
cannot be set above 0 .1 bar below the System pressure (2) .
Hi Alarm (1)
see Fig . 20
Sets high system pressure alarm.
Set in 0 .05 bar increments
above the System pressure (2) . Cannot be set below System pressure
+ 00 .5 bar . Alarm auto resets when system pressure is reduced below
alarm level .
Lo Alarm (4)
see Fig . 20
Sets low system pressure alarm.
Set in 0 .05 bar increments
below the System pressure (2) - Differential pressure (3) - 0 .05 bar .
Alarm auto resets when system pressure is increased above alarm
level
System fill
Turns on system fill option
. System fill option will turn off once
the System pressure (2) has been reached or a period of 24 hours has
passed since it was set to ‘on’ . Lo alarm and Max runtime functions
are disabled whilst System fill is turned on . Pumps will stop if the
System pressure (2) or Hi alarm pressure (1) is reached .
Start Activity High
Alarm triggered if the APU starts more than the preset
limit in 24 Hours.
Set to minimum of 100 starts per 24 hrs . Set in increments of 100 .
TIME
PR
ESSU
R
E
HIGH ALARM SET VALUE (1)
LOW ALARM SET VALUE (4)
SYSTEM PRESSURE SET VALUE (2)
DIFFERENTIAL SET VALUE (3)
PUMP 'OFF'
PUMP 'ON'
SYSTEM FILL MODE
NORMAL OPERATION
SY
ST
EM
PR
ES
SU
RE
Fig. 20
Fig. 21
A
B
C
D
Содержание CP1-03-04913
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