QED MicroPurge basics MP10UH User manual

MP10UH
CONTROLLER
MODEL
PATENT PENDING
Instruction
Manual
P.O. Box 3726 Ann Arbor, MI 48106-3726 USA
1-800-624-2026 Fax [phone]
[e-mail] www.qedenv.com
P/N 95177 8-22-11

MP10UH
Controller
Optional
MP30 Drawdown
Meter
Well
Cap
Tubing
Air Supply In
Pump Air Supply
Pump Discharge
Well Wizard
Bladder
Pump
R
MP10UH Basic Setup

Conventions and Diagrams
Introduction / Quick-Start
Turning the MP10UH On
Opening Display
MicroPurge Mode For Pumps Located At Depths Less Than 250 Ft.
Manual Mode For Pumps Located At Depths Over 250 Ft.
Using CPM
Sample Collection
Sample Collection
Flow Throttle Use
Flow Throttle Use
MP10UH Battery
Troubleshooting
MP10UH Specifications
QED Service Contacts
QED Warranty
Appendix 1 ID Data Table
Use with the MP30 Level Sensing Water Level Meter
ID Mode
Bladder Pump Operation in Low-Submergence Applications
1
2
5
8
8
9
10
14
12
11
15
12
15
18
19
20
21
21
22
24
7
Contents
Topic Page
Safety Warnings
Appendix 2 Micropurge Pump Specifications 25

1
Safety Warnings
Safety warnings
Compressed air - Use caution when working with compressed air or gas. Compressed gas
cylinders are under extreme pressure and can cause unrestrained hoses to whip about danger-
ously. Do not over pressurize your controller. Failure to operate the controller within the pres-
sure limits could result in failure. Read all operating instructions before operating the MP10UH
controller.
Warning! - Do not disassemble the pneumatic pump while it is connected to a compressed gas
source. Dangerous pressures could cause injury.
Warning! The MP10UH Controller is designed to operate on high air pressure, up to 500 PSI.
Read all instructions before operating and follow all safety guidelines! Failure to do so may
cause serious injury or death.
Use only the hoses and connecting fittings supplied with the MP10UH and accessories from
QED - DO NOT MODIFY OR SUBSTITUTE THE FITTINGS OR HOSES. Do not supply the
MP10UH with compressed gas at pressures greater than 500 PSI. Be certain of the gas
supply source pressure before you connect it to the MP10UH. Do not modify the fittings on
any well caps to allow connection of the MP10UH to sampling pump systems not intended for
use with the MP10UH; applying higher pressure than intended to sampling pumps can damage
the pumps and tubing and cause injury or death to persons nearby. Connect the MP10UH only
to pumps located within the well in their normal operating position; DO NOT use the MP10UH
to operate pumps outside the well.

2
MP10UH Panel Layout:
MP10UH Control
Keypad and display
Controller to pump
connection
Compressed gas source
connection
Pressure Gauge
Connector for optional
MP30 Drawdown Control
Battery Cover
Flow throttle
Discharge cycle
indicator
ps i
0
T HR O TT L E
CONTROL PORT
DISCHARGE CYCLE
AIR IN
AIR OUT
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time R efill
Discharge
00.1
1 03
1 0.0
M PC P M 4 > 05 . 0
D
E
D
E
1-800-624-2026
micropurge.com
O
U
ED
asics
CONTROLLER
3 AABATTERIES INSIDE
MP10UH
MODEL
MicroPurge Mode Quick Guide
1. Opening cover turns power ON. (Close to turn OFF.)
2. Select desired Cycles Per Minute (CPM) with the key
(default value is 4 CPM).
3. Turn throttle to set depth on gauge to 10-20 feet
deeper than the pump location in the well.
4. Press CYCLE to START pumping.
5. When water discharge begins, adjust throttle until
a slow,steady flowstream is achieved.
6. Press keys to set the desired purge flow.
7. Use key to directly control sample flow and pause.
II
Diagrams and Conventions used in the Text

MP10UH Control Keys:
MODE
I I
CPM Button (also scroll for
item selects)
UP Button, faster pumping
(also increase item)
DOWN Button, slower
pumping (also decrease
item)
CYCLE Button
MODE Button (also battery
check)
PAUSE Button (also
manual sample)
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time Refill
Discharge
00.1
1 03
1 0.0
M PC P M 4 > 05 .0
D
E
CYCLE
In MP Mode
Cycle Per Minute
key - Changes
cycle per minute Scrolls cursor
Faster key -
Speeds up flow
Slower key -
Slows down
flow
Pause key -
Pauses flow for
sampling
Mode key -Selects
the operation
mode. Also battery
check
Cycle key -Selects
Start and Stop of
pump cycling
Changes a value
at the cursor
location
Changes a value
at the cursor
location
In Other Modes
Diagrams / Conventions
3
Diagrams and Conventions used in the Text (cont.)

MP10UH Display:
00.1
M P C PM 4 > 05 .0
1 03 1 0.0 Discharge time
setting in
seconds
Indicates if
pump is
Refilling or
Discharging
Cycles per
minute setting
The mode the
controller is in
Refill time
setting in
seconds
Time
remaining
in the cycle ID for time
settings
4
Abbreviations:
Diagrams / Conventions
Diagrams and Conventions used in the Text (cont.)
CPM
MP
ID
HELD
MN
BAT
LVL
>
Cycles Per Minute
MicroPurge Mode
ID Time Set Mode
Held In A Cycle
Manual Time Set Mode
Battery
Level Pause
Indicates Refill Or Discharge Cycle

Manual Mode Operation Directly set pump refill and discharge cycle times for deep well
applications.
MicroPurge Mode Operation Simple Increase / Decrease keys allow you to easily set the
flow rate you need for each well, for pump depths to approximately 250 ft.
Level Delay Interface The controller plugs into the optional MP30 MicroPurge Drawdown/
Water Level Meter to provide direct feedback of well drawdown and to pause pump operation
until the level recovers.
Insert Batteries
Introduction/quick Start
5
Introduction / Quick start
The MP10UH Micro Purge Basics Controller is used to operate QED Well Wizard bladder
sampling pumps to purge and sample ground water.The MP10UH has specific design features
to make MicroPurge sampling easier. These features include:
IDTime Set Mode Operation Quickly recalls pre-determined MicroPurge settings for each
well by specifying a 3-digit ID.
The optional MP30 MicroPurge Drawdown / Water Level Meter plugs into the MP10UH to provide
water level feedback. The MP30 uses a standard conductivity probe to detect the ground water
surface and a marked tape allowing the user to measure the depth.When the meter is set in
MicroPurge mode, the probe is lowered a specific distance below the static water level and fixed in
this position. During well sampling if the water level drops below the user-set probe position, the
MP10UH is paused which prevents further draw down by the pump. Once the level recovers the
MP10UH begins pump operation again, starting in the pump refill cycle. Use of the MP10UH with
the MP30 is detailed later in this manual.
Remove the battery cover on the top of the MP10UH. Insert 3, AA alkaline batteries into the battery
holder and carefully replace the holder in the carrier. Replace the battery cover and tighten the 4
screws. Batteries should last for about 6-8 weeks of typical full-time field use. If the MP10UH will
be stored longer than about 3 months, the alkaline batteries should be removed to prevent leakage.

Press keys to set the desired purge flow rate.
For pump depths greater than 250 ft
Select manual mode (MN) with key
Turn throttle to set pressure on gauge to 12-16 psi higher than the minimum requirement
of 0.5 psi per foot of pump depth location in the well.
For pumps located at depths less than 250 ft.
MO DE
Cycle
Introduction/Quick Start
Quick Start: Connect the pump air supply hose to the fitting label-edAIR OUT on the
MP10UH. Connect the black air supply hose to a compressed air or gas source and
connect it to the fitting labeled AIR IN on the MP10UH. Supply up to 300 psi compressed
air or gas to the controllerurn the controller throttle until the gauge reads appropriate
pressure for the depth of the sample pump approximately, 0.42 psi per foot of pump depth.
Follow instructions on the battery panel:
Opening the MP10UH case turns power on.
Note: It may take up to 20 seconds for the unit to power up.
6
Then set Refill and Discharge times as needed to begin and optimize pumping; use initial
settings of 30 seconds each for both refill and discharge for pump depths to 300 ft; for
pump depths over 300 ft., use 60 seconds each for both refill and discharge.
Press to START pumping.
When water discharge begins, adjust throttle until a slow, steady flowstream is achieved.
Then adjust refill and discharge times to achieve desired flow rate. To collect samples,
MO DE
Select MicroPurge mode (MP) with key
Turn throttle to set pressure on gauge to 4-8 psi higher than the minimum requirement of
0.5 psi per foot of pump depth location in the well.
Select desired Cycles Per Minute (CPM) with (default value is 4 CPM, lower CPM
I I
To collect samples, continue purge flow, or use key to directly
control sample flow and pause.
I I
continue purge flow, or use key to directly control sample flow and pause.
for deeper wells, higher CPM possible with shallow wells).

7
Bladder Pump Operation in Low-Submergence
QED sampling bladder pumps fill by hydrostatic pressure. As the inside of the pump's bladder
fills with water, the bladder expands. This filling and expanding of the bladder is referred to as
the "refill" half of the pump cycle. When air pressure is applied to the outside of the bladder, the
bladder is squeezed, forcing the water up the discharge tubing. This is referred to as the
"discharge" half of the pump cycle. In low-submergence applications, there is less water pres-
sure available to expand the bladder during the refill.
This can result in a smaller volume of water being pumped with each pump cycle because the
bladder may not fully expand.
As a result of the lower volume per cycle, more time will be required to bring the water to the
surface. An easy way to verify that the pump is working, prior to the water reaching the surface,
is to submerge the pump's discharge tubing in a beaker of water. Each time the pump goes into
discharge, air in the discharge tubing, which is displaced as the water level in the tubing rises,
can be seen as air bubbles coming from the end of the tubing. To optimize the pumping rate,
the refill time should be set long enough to achieve the maximum volume of air bubbles on
each pump cycle, and the discharge time should be set long enough to ensure that the air has
stopped bubbling out of the tube before the pump controller switches back into refill.
In low submergence wells, it is critical that the air pressure driving the pump not be more
than 10-15psi higher than the minimum re-quirement of 0.5 psi per foot of pump depth.
Higher pressures than this can cause the bladder to be squeezed too tightly during discharge,
a condition which can prevent the bladder from expanding during refill. To avoid this condition
in deeper wells, it is suggested that the air pressure applied to the pump be gradually increased
as the water level in the pump's discharge tubing rises. It is recommended that the air pressure
be set at 15 psi initially, and slowly increased in increments of 10 psi as needed until the water
reaches the surface. Submerging the end of the discharge tubing under water as described
above will verify whether the air pressure is set high enough.
Bladder Pump Operation in Low-Submergence Applications
Pump submergence is defined as the height of the static water column above the top of the
pump. In wells in which this water column height is 5 feet or less, the pump is considered to be
in a low-submergence application.

Opening Display - The opening display is shown for 5 seconds and displays the controller
name, the version number and the battery voltage, as shown in Figure 1.Figure 1 shows
that the battery is GOOD, that the battery voltage is 4.20 volts and that the software version
in the cont-roller is 1.0. Battery voltage must be greater than 3.6 volts for the unit to operate.
If the unit fails to cycle replace the 3-AA batteries with fresh cells.The opening screen is
displayed for 5 seconds, if you wish to by pass the opening screen, hitting any key, such as
the CPM key will bring you to the default MP display.
8
Operation
Figure 1 Opening Screen
Operation
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time Refill
Discharge
QED
MP10UH
V1.0
BAT GOOD 4.20
DE
Turning the MP10UH Display On - The MP10UH is powered on using the ON/OFF (I/O)
key. When the ON/OFF key is pressed once the MP10UH displays an opening screen for 5
seconds, after which it displays the default MicroPurge screen.At this point the MP10UH is
in MicroPurge mode (MP) but not cycling the pump.This initial state allows the user to adjust
time and throttle settings before the pump starts to operate. Pressing the ON/OFF key again
begins pump cycling.Times and modes may be adjusted while the pump is cycling or before.
Pressing the ON/OFF key a third time will turn the MP10UH off.
Note: all user-entered time settings are lost when the MP10UH is turned off.Also, the
MP10UH does not auto-matically power down so make sure the unit is turned off before
storage. Remove the batteries when not in use.

Figure 2 MP10UH Manual Mode (MN mode)
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode C P M
ID
Time Refill
Dis c harge
00.1
1 03
1 0.0
M PC P M 4 > 05 .0
D
E
9
Manual Mode For Pumps Located At Pump Depths Over 250 Feet
Operation
For deep wellsmanual mode (MN on the display), is useful for manual-ly setting refill and
discharge times on the controller as in traditional controllers (like previous model QED
pump controllers).An example of the MP10UH in Manual Mode is shown in Figure 2.
Manual Mode is also used when there are other conditions where one of the 165 possible
preset times of ID and MP modes will not match your needs. MN mode is entered when the
MODE key is pressed twice from the default MP mode.As shown in Figure 2, the display
indicates MN mode in the lower left corner and CPM and ID are not displayed.
In Manual Mode the CPM and UP, DOWN keys function differentlythan MP mode.The CPM
key becomes a key used to select the digits of the refill and discharge time settings found at
the rightmost positions on the display.The UP and DOWN keys are used to adjust the digit
value up or down. By selecting and adjusting digits up and down a user can quickly set any
time from 00.1 seconds to 999.9 seconds. Sampling in Manual Mode is the same as explained,
above, for MP mode.
The MP10UH does not attempt to translate a user set time into a corres-ponding ID or CPM.
Also, any settings you have entered in MP or ID modes are lost once you press the MODE key
to enter MN mode.
Note: changes in time settings that are entered while the controller is cycling are reflected on
the next cycle change (so a long refill time of 15 seconds will time out before a new refill time
becomes valid).

Sample Collection
I I
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time Refill
Discharge
H E L D
1 03
1 0.0
M PC P M 4 > 05 .0
D
E
10
Operation
The PAUSE key ( ) is used to freeze the controller action to allow the user time to collect
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.
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.
Figure 3 MP10UH Held State (MN mode)

Flow Throttle Use
Operation
11
The flow throttle is used during sampling to regulate the pressure applied to the pump.
Turning the throttle clockwise increases the pressure and counterclockwise decreases the
pressure. The pressure gauge shows the approximate pressure applied to the pump. This
allows easy adjustment of the throttle giving pressures that will produce gentle, non-
turbulent flow (normally 5-10 psi higher than the minimum requirement of 0.5 psi per foot
of pump depth). For traditional, high volume purging pressure may be increased with the
throttle to maximize pump flow during well purging.

12
Figure 4 MP10UH MicroPurge Mode
Using CPM
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time Refill
Discharge
00.1
1 03
1 0.0
M PC P M 4 > 05 .0
D
E
Operation
MicroPurge Mode for pumps located at depths less than 250 ft.
Most MP10UH users will leave the controller in the default MicroPurge(MP) mode. See Figure
4 for an example of the MP10UH in MP mode.MP mode lets you to use the UP and DOWN
keys to directly increase and decrease pump flow rates.The MP10UH has a broad range of
other CPM settings to ensure the availability of a time setting that will match your specific
conditions. MP mode also displays an ID, with a value of 1 to 165 that matches the flow
settings (CPM and refill and dischargetimes you have set).This ID should be noted alongside
the well identification (QED provides custom weatherproof ID badges for purchasers of our MP
series of well caps) for quick setting of the optimal controller settings on the next visit by using t
he MP10UH in ID mode.
With previous bladder pump controllers, a leading low-flow technique called for selecting the
number of pump cycles per minute, then adjust-The MP10UH introduces a simpler way to
control bladder pump flow rate and achieve the low-flow method used by experts. Up/down
arrow keys are used to adjust pump flow even at very low rates, with excellent control and
repeatability.

13
Operation
With previous bladder pump controllers, a leading low-flow technique called for selecting the
number of pump cycles per minute, the adjusting the bladder pump discharge and refill times
to achieve the desired volume per cycle.These adjustments were inter-related, complex, and
varied by operator. The new MicroPurge Mode (MP) of the MP10UH builds in a "cycles per
minute", or CPM, method of flow control.
With this method, the number of complete pump cycles per minute is fixed, within a range of
1 to 6; 4 CPM is the default value which ap-pears at startup. Each time the up/down arrow
keys are pressed, the pump refill and discharge times are both automatically adjusted to
maintain the selected CPM value. Each adjustment increases or decreases the volume
pumped per cycle, and the per-minute flow rate is the volume per cycle X the CPM value.
For example, with a 4 CPM setting, 60 ml volume per cycle equates to 4 X 60 = 240 ml/min
flow rate.A single press of the Flow up-arrow key could change the volume per cycle to 80 ml,
for example, resulting in a new, increased flow rate of 4 X 80 = 320 ml/min.And the MP10UH
assigns a unique identification value to each setting, the ID value, which can be directly set
during later sampling events.
"MP" displayed in the lower left corner of the display indicates MicroPurge mode.The default
CPM setting of 4 cycles per minute is a good starting point for wells with depths from 25-100ft.
MicroPurge mode starts at a time setting of 10 seconds refill and 5 seconds discharge,close
to optimal for many wells.This startup settings corresponds to a 4 cycles per minute setting
(CPM4) and an ID setting of 103.
Using the CPM key will change the CPM setting on the controller.Therange of CPM settings is
CPM1 through CPM6. CPM changes like this each time you hit the CPM key: 4 5 6 1 2 3
4 5, etc.The UP and DOWN keys change the flow rate directly, by altering the refill and
discharge times within a CPM setting.
Note: changes in settings that are entered while the controller is cycling are reflected on the
next cycle change (so a long refill time of 15 seconds will time out before a new refill time
becomes valid).

14
Sample Collection
I I
Operation
Here is an example of the use of the UP (faster) key:
Each of the 165 possible ID settings corresponds to a unique ID that is associated with CPM,
refill and discharge time values. For typical usage, only the UP/DOWN arrow keys are required
to set flow, and the ID number is provided for easy, direct return to past settings. Appendix 1
lists all possible ID settings and the default refill and discharge time settings for each CPM.
Appendix 1 also shows how the refill and discharge time will change within a CPM setting as
you press the UP or DOWN keys.
The PAUSE key ( ) is used to freeze the controller action to allow the user time to collect 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.
ID
---
1
2
3
10.0
9.5
9.0
8.5
5.0
5.5
6.0
6.5
103
104
105
106
Key
Press Refill (sec) Discharge (sec)

15
Flow Throttle Use
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time Refill
Discharge
LV L
1 0.0
M PC P M 4 > 05 .0
D
E
Operation
Use with the MP30 Automatic Drawdown Control
Figure 5 MP10UH Level Paused State (MP mode)
The flow throttle is used during sampling to regulate the pressure applied to the pump.
Turning the throttle clockwise increases the pressure and counterclockwise decreases the
pressure. The pressure gauge shows the approximate pressure applied to the pump.This
allows easy adjustment of the throttle giving pressures that will produce gentle, non-turbulent
flow (normally 5-10 psi higher than the minimum requirement of 0.5 psi per foot of pump
depth). For traditional, high volume purging pressure may be increased with the throttle to
maximize pump flow during well purging.
The MP10UH may optionally be used with the MP30 MicroPurgeDrawdown / Water Level Meter.
See Figure 5 for an example of the MP10UH in MP mode with the controller in a level paused
state enacted by an MP30 meter.

Figure 6 MP10UH MP30 Use
Figure 7 MP10UH MP30 Use
MP10 MP30
Maximum Point
of Drawdown
Normal
Static
Level
MP10UH
Connector For Optional
Mp30 Drawdown Control
psi
0
THROTTLE
CONTROL PORT
DISCHARGE CYCLE
AIR IN
AIR OUT
D
E
1-800-624-2026
micropurge.com
O
U
ED
asics
CONTROLLER
3 AABATTERIES INSIDE
MP10UH
MODEL
MicroPurge Mode Quick Guide
1. Opening cover turns power ON. (Close to turn OFF.)
2. Select desired Cycles Per Minute (CPM) with the key
(default value is 4 CPM).
3. Turn throttle to set depth on gauge to 10-20 feet
deeper than the pump location in the well.
4. Press CYCLE to START pumping.
5. When water discharge begins, adjust throttle until
a slow,steady flowstream is achieved.
6. Press keys to set the desired purge flow.
7. Use key to directly control sample flow and pause.
II
16
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set MN Manual Time Set LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value Flow/Value Flow/Value
Hold/Sample
/Cycle
Start/Stop ID/MN/MP/
Battery
Mode CPM
ID
Time Refill
Discharge
LV L
1 0.0
M PC P M 4 > 05 . 0
D
E
Operation
Compressed Gas
Source Connection
Controller To Pump
Connection

17
Operation
The normal operating mode for using the MP30 with the MP10UH is:
1. Use the MP30 in standard WLM mode to determine the static water level in the well
2. Decide what the maximum drawdown for that well is during sampling
3. Lower the probe to the maximum drawdown level
4. Switch the MP30 into Drawdown Control mode
5. Begin pumping with the MP10UH
The MP10UH and MP30 are connected with a cable (see Figures 6 and 7). The MP30 is
switched into mode and the water level probe is lowered to the desired maximum draw-
down level. Limiting the maximum drawdown depth limits the differential head driving flow
into the well and the velocity of the water flowing into the well from the surrounding formation
important in MicroPurge sampling. The MP10UH and MP30 work together to automatically
adjust the pump operation so as to maintain drawdown at the set level. When the water level
drops below the probe, the MP30 sends a signal to the MP10UH to pause pumping. Both the
MP10UH and the MP30 give visual signals (and the MP30 emits an audio signal) that pump
operation has stopped because of too much drawdown. Once the level recovers, the MP30
signals the MP10UH to resume pump operation. The MP10UH resumes by starting in the refill
leg of the pump cycle. "DRAWDOWN CONTROL"
6. Observe the interactions between the two devices, if the MP30 is frequently pausing the
MP10UH, it may be appropriate to slow the flow down (using the DOWN key in MP mode)
to better match pump flow to well recharge.
When switched into MODE, the MP30 has a flashing red light and an optional (can be switched
off by the user) audio alarm to indicate when the probe is in the dry state.A submerged probe
in all modes is indicated by a solid green light. When the MP10UH is paused by the MP30 the
MP10UH display indicates this as shown in Figure 5."DRAWDOWN CONTROL"