Geotech Geocontrol PRO User manual

Rev 10/25/2011 Part# 11150263
Geotech
Geocontrol PRO
Installation and Operation Manual

TABLE OF CONTENTS
DOCUMENTATION CONVENTIONS..........................................................................................................2
NOTICES .....................................................................................................................................................2
CHAPTER 1: SYSTEM DESCRIPTION ......................................................................................................4
CHAPTER 2: SYSTEM INSTALLATION .....................................................................................................5
CHAPTER 3: SYSTEM OPERATION ..........................................................................................................6
CHAPTER 4: SYSTEM MAINTENANCE ....................................................................................................8
CHAPTER 5: SYSTEM TROUBLESHOOTING ..........................................................................................9
CHAPTER 6: SYSTEM SPECIFICATIONS ...............................................................................................11
CHAPTER 7: SYSTEM SCHEMATIC........................................................................................................12
CHAPTER 8: REPLACEMENT PARTS LIST ............................................................................................15
THE WARRANTY ......................................................................................................................................17
EQUIPMENT RETURN POLICY ...............................................................................................................17
EQUIPMENT DECONTAMINATION .........................................................................................................17
DECLARATION OF CONFORMITY ..........................................................................................................18
1

DOCUMENTATION CONVENTIONS
This manual uses the ollowing conventions to present in ormation:
An exclamation point icon indicates a WARNING of a situation or condition that
could lead to personal injury or death. You should not proceed until you read
and thoroughly understand the WARNING message.
WARNING
A raised hand icon indicates CAUTION information that relates to a situation or
condition that could lead to equipment malfunction or damage. You should not
proceed until you read and thoroughly understand the CAUTION message.
CAUTION
A note icon indicates NOTE information. Notes provide additional or supplementary
information about an activity or concept.
NOTE
NOTICES
CAUTION
In order to ensure that your Controller has a long service life and operates properly, adhere to
the cautions below and read this manual before use.
Disconnect from power source when not in use.
Controller power input source must not exceed maximum ratings.
Controller must be wired to a negative ground system.
Controller may not operate properly with excess wiring not supplied by manufacturer.
Avoid spraying fluid directly at controller.
Never submerge controller.
Avoid pulling on wires to unplug controller wiring.
Avoid using controller with obvious physical damage.
To prevent controller damage, avoid dropping controller.
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3
NOTE
The Geotech Geocontrol PRO cannot be made dangerous or unsafe as a result of failure due to
EMC interference.
WARNING
Do not operate this equipment if it has visible signs of significant physical damage other than
normal wear and tear.
Notice or consumers in Europe:
This symbol indicates that this product is to be collected separately.
The following apply only to users in European countries
• This product is designated for separate collection at an appropriate collection point.
Do not dispose of as household waste.
• For more information, contact the seller or the local authorities in charge of waste
management.

Chapter 1: System Description
Function and Theory
The Geocontrol PRO is a unique controller for operating down well bladder type sampling
pumps. When an external 12 VDC power source is connected to the controller, the internal
air compressor is capable of producing a pressure of 100 PSI (7 bar). This pressure allows the
user to take samples from a depth to 180 feet (55 mm).
The controller offers a variable cycle timer for controlling the portable compressor’s on-time
and off-time. While the compressor is on, air is pushed down well to the bladder pump, com-
pressing the internal bladder and evacuating the liquid in the pump. When the compressor
shuts off, the air pressure in the pump exhausts out of the system, allowing liquids to enter
the pump.
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Figure 1
Installation Diagram
Chapter 2: System Installation
WARNING
Verify the 12V system to be used is rated and fuse protected for operation at 15 amps continu-
ous operation. Failure to verify system rating could result in damage to equipment. Over-heated
wiring and other materials or components in contact or near by the power delivery system
could pose a potential fire or burn hazard.
To operate the Geocontrol PRO, make sure the power switch is in the “off “position (rocker in
down position). Plug the power input cord into a fuse protected 12V lighter receptacle on a
negatively grounded system. If the controller is to be wired directly to a 12V battery, make sure
to connect the positive (red) alligator clip to the positive (red) battery terminal and connect the
negative (black) alligator clip to the negative (black) battery terminal. Next, securely plug in the
circular plug connector on the opposite end of the cable to the corresponding receptacle on
the face of the controller. Continue by plugging the pump’s air hose into the port labeled AIR on
the controller’s face. Then plumb the pump’s discharge line into a suitable container. Check all
wiring and plumbing for correctness.
Finally, double check to ensure the 12V system positive and negative is not reversed at any
connection point.
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DC Power Cord
with Cigarette Lighter
Adaptor
AC Power Cord
and Adaptor
Adaptor
12 Volt
Battery

Chapter 3: System Operation
WARNING
Do not operate this equipment if it has visible signs of significant physical damage other than
normal wear and tear.
CAUTION
Operating the equipment in any way other than that described within this document could
potentially damage the equipment.
Disconnect power source when not in use.
Double check 12V system positive and negative are not reversed at any connection point.
Before turning the power switch “on” turn the Geocontrol PRO’s “Fill” and “Discharge” timer
knobs to adjust the cycle times. These knobs are located on the front face of the Geocontrol
PRO below the airline pressure gauge. To the left is Discharge time and to the right is Fill time.
Use the radial number scales around each timer knob to adjust timer values in seconds.
Discharge Time:
The time it takes to squeeze the bladder and push the water out of the pump. Increase this
time with increased depth to water and larger bladder pumps. Decrease this time with lower
depth to water and smaller bladder pumps. Timer can be set from approximately 2 to 60 sec.
Fill Time:
The time allowed for the bladder to refill. Increase this time with increased depth to water and
larger bladder pumps. Decrease this time with lower depth to water and smaller bladder
pumps. Timer can be set from approximately 2 to 60 seconds. Fill rate depends on hydrostatic
pressure (pressure from the water above the pump) and will vary depending on pump place-
ment within the water column. Therefore, the more water above the pump the faster it will fill.
Turn the controller power switch ON. In case of long fluid discharge lines it could take multiple
cycles for water to reach the outlet. If the fluid discharge from the pump falls off before the
discharge cycle is complete, the discharge time is set too high. This could result in a creased
bladder that will reduce per cycle pump volumes. Therefore, if the compressor is still running
and water has stopped coming out of the discharge tube, the discharge time should be
decreased. Pumping efficiency can be maximized by measuring the amount of fluid discharged.
If the volume of fluid after one pump cycle is less than the rated volume of the pump being
used, then the fill rate can be increased.
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The air line pressure gauge can be utilized to maximize efficiency. As a general rule, the pressure
indicated on the gauge should not exceed an equivalent depth to water pressure. 1 PSI = 2.31
feet (1 bar=1.02 m) of water. Once the bladder in the pump is empty of liquids the pressure will in-
crease sharply. If a quick pressure increase is noticed, reduce the discharge time until the quick
pressure increase is no longer obvious.
For example, if the well you are sampling has a depth to water of 23 feet (7 m) you should not
expect to see a reading on the pressure gauge much over 10 PSI (.7 bar). When the discharge
cycle begins the reading on the pressure gauge will begin to rise. Once depth to water pressure
has been reached the reading will ‘stall’ at that pressure until the bladder is empty or discharged.
Once the bladder is compressed completely the pressure will again start to rise. For maximum
per cycle liquid pumping volume, this is the optimum point at which the discharge timer would
expire and the fill rate timer would begin. Reduced per cycle liquid pumping volume can be
achieved by further decreasing the discharge time, thus evacuating only part of the total blad-
der volume.
CAUTION
For use with negative (-) ground systems only.
Exceeding the recommended duty cycle will cause overheating.
Damage will result if the supply voltage exceeds 14 VDC.
7

Chapter 4: System Maintenance
Maintenance Procedures
Disconnect power source when not in use.
Unit must be returned to Geotech Environmental Equipment for any service. In order to ensure a
long service life, keep the Geocontrol PRO clean. Often a soft, damp cloth can be used to remove
dust and dirt from the exterior surfaces of the Geocontrol PRO. In extreme cases, or to remove
aged caked on dirt and dust, a mild soap and water solution can be applied to a soft cloth and
used to clean the exterior surfaces of the Geocontrol PRO. Do not soak or directly spray liquids
on the Geocontrol PRO.
WARNING
Equipment should be repaired by Geotech Environmental Equipment factory trained repair
technicians only. Improper repair of equipment may result in degradation of performance
and/or service life. Disassembly exposes potentially dangerous moving components that could
injure someone who is not properly trained to repair this equipment.
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Chapter 5: System Troubleshooting
The Geocontrol PRO has been designed and manufactured to provide a long service life and
trouble free operation in the field. If the compressor, during charge cycles, becomes sluggish,
check supply voltage. If the supply voltage falls below 12 VDC, the compressor’s performance
will be directly affected. A fully charged battery will produce the best results.
Other sources of low pump output may be 12V lighter receptacles or plugs. Make certain these
connections are securely plugged in and clear of any debris. Once securely plugged in, rotating
the connection can often help if there is a dead spot in the connector. Also, check for connec-
tion and cable fatigue, cracks, surface oxidation, rust etc.
I the compressor does not turn on:
• Double check battery polarity is correct. In other words, the positive and negative cables are
connected positive to positive and negative to negative. The Geocontrol PRO is protected
from damage due to reverse polarity connection.
• Turn the power switch to the OFF position and let the unit sit in the OFF state for two
minutes. This will hard reset the electronic timer module.
• If ambient temperatures are in excess of 104°F (~40°C) then disconnect from power and let
sit in a cool location. Do not open the case for any reason. This will not hasten the cooling
process, but will invite debris into internal components that could result in reduced life or
immediate equipment failure.
• If the compressor still does not turn on the electronic timer module may have failed.
Call Geotech Service at 1-800-833-7958 to arrange for the equipment to be sent back to
a factory authorized repair location.
• If 15 Amp circuit breaker is tripped, push to reset. If it trips again, call Geotech Service
at 1-800-833-7958 to arrange the equipment to be sent back to a factory authorized
repair location.
Compressor turns on and luid is being pumped but no pressure is indicated on the gauge.
• The pressure gauge has failed; however operation of the device may continue even though
the gauge feature is not operational. Call Geotech Service at 1-800-833-7958 to arrange for
the equipment to be sent back to a factory authorized repair location.
Fluid is not being pumped and the compressor turns on, no pressure is indicated on the gauge.
• Remove the air line from the front of the Geocontrol PRO. Block the air outlet on the front
of the Geocontrol PRO while the compressor is running to verify the pressure gauge needle
indicates an increase in pressure. Remove the blockage from the air outlet and observe
whether or not a small burst of compressed air is released. If pressure cannot be built at the
outlet on the front of the Geocontrol PRO, call Geotech Service at 1-800-833-7958 to arrange
for the equipment to be sent back to a factory authorized repair location.
•If pressure can be built at the air outlet on the front of the Geocontrol PRO while the compres-
sor is running
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