38
PRESSURE DIP TIMER
Mode
4
If you elect to use the low-pressure trip point and set a suitable trip
pressure, the question that follows asks you to set a dip pressure time.
The dip pressure time is the time the E30 will tolerate the pressure being
below the low-pressure trip point before shutting the pump or pumps down.
The dip timer is factory set to 5 seconds. This can be altered using the
(
˅
)
and
(
˄
)
buttons. The range of adjustment is 1 second to 900 seconds
in 1 second increments. When setting the dip time, be aware that the
pump or pumps may be running dry during the dip period. The dip timer
automatically terminates its run and the E30 returns to normal running as
soon as pressure higher than the trip pressure is detected. If the system
pressure remains low and the dip timer times out, both pumps will be shut
down and the E30 will display a warning message that the pressure is too
low.
SET THE PRESSURE PUMP 1
Mode
4
The E30 menu asks you to set the required operating pressures for each
pump starting with pump one. Pump one will be the pump controlled by
relay 1 in the E30. The pressures you set will depend on the application.
Generally, pump one should be considered the main pump. In a line
boosting or jockey pump application pump one will be the largest capacity
pump and will provide the bulk of the system’s output. In such a system
pump one would normally be set so there was a reasonably wide difference
between its starting and stopping pressures.
START PRESSURE 1
The starting pressure can be set between 0 and 2000 kPa or between 0
and 290 psi. If you elected to use a low-pressure trip point, the starting
pressure must be higher than the set trip pressure.
STOP PRESSURE 1
The high-pressure cut-out must be set to a value that is higher than the cut-
in pressure and if used, the trip pressure. Normally the high-pressure cut-
out will be a value considerably higher than the cut-in pressure as to some
extent it is the difference between the cut-in and cut-out pressures, relative
to draw off, that will determine how often the system will cycle on and off.
If you attempt to set an unrealistic pressure such as a cut-out pressure that
is lower than the cut-in pressure then on pressing
(P)
a warning screen
Summary of Contents for E30
Page 11: ...11 74mm 60mm 4 X 6mm Holes TOP WALL BRACKET DRILL PATTERN...
Page 19: ...19 WIRING DIAGRAMS PLUG PLAY CONNECTIONS CONNECTIONS FOR A SINGLE PHASE PUMP...
Page 20: ...20 LOW VOLTAGE AC SUPPLY WITH REMOTE INPUT CONNECT AN EXTERNAL ALARM...
Page 21: ...21 TWO SINGLE PHASE PUMPS WITH A REMOTE INPUT LOW VOLTAGE DC SUPPLY REMOTE INPUT...
