Sample Collection - QED MicroPurge basics MP10UH Instruction Manual

Operation

Sample Collection

The PAUSE key (
a sample or carry out other steps that might be difficult if the controller continued to automatically
cycle and cause the pump to produce water. While the controller is cycling, pressing the PAUSE
key causes the controller to immediately enter the Hold state. Drive air is vented from the pump
(this is the pump refill cycle) and the pump fills and waits. Pressing the PAUSE key a second time
causes the controller to immediately enter the Sample state. Drive air is directed to the pump
causing the pump to discharge its volume of liquid. Bladder pumps typically hold 400-500 ml of
liquid, so use of the Hold and Sample states allow the full volume of the pump to be discharged
into a sample container. Pressing PAUSE once again returns the MP10UH to its normal
Automatic Cycling state. During Hold and Sample a HELD is displayed to remind you that the
controller is in a paused state. Figure 3 shows an example of the MP10UH in MP mode, but
HELD in the sample state.
Note: Pressing the Cycle key also freezes controller cycling. However, using the
Cycle key rather than the Pause key causes the startup screen to be displayed upon restart.
Use of the Pause key is recommended for typical operation.
Figure 3 MP10UH Held State (MN mode)
Warning!: in the HELD SAMPLE state the pump, tubing and hoses are all under pressure. DO
NOT attempt to disconnect or disassemble any part of the system when it is under pressure.
The system is under prsure if the pressure gauge shows a value greater than 0 and the RED
Discharge Cycle Indicator is showing.
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) is used to freeze the controller action to allow the user time to collect
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set
H E L D 1 03 1 0.0
M PC P M 4 >05.0
Mode
CPM/Value
CYCLE
Start/Stop
MN Manual Time Set
LVL LevelShutoff
ID
Time Refill
Discharge
CPM
Flow/Value Flow/Value
I I
MODE
ID/MN/MP/
Hold/Sample
Battery
/Cycle
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