Everything you need to know about groundwater sampling pumps including types, specifications, pros and cons, common problems, how to decontaminate and supplies and accessories.
2. Types of pumps – submersible, bladder, peristaltic, and
inertial
Pump specifications
Pros and cons
Supplies and accessories
Common problems in the field
Decontamination
3. Type of Pump: Submersible
Maximum Depth: ~ 300 feet
Maximum Flow: ~ 9 GPM
Well Size: 2” or larger
Material: Teflon and Stainless Steel
Power: 115V AC
Outlet: 3/8” or ½” Barb
Common Uses: Purging, Sampling,
Pump Test
4. PROS CONS
Inert materials – Stainless Easy to damage
Steel & Teflon o Does not handle sediment
well (not recommended for
High flow rate – up to 9 developing)
GPM o Can overheat easily if run dry
Pump up to 300 feet depth Requires 115V AC Power
Fits in 2” wells or larger Requires water circulation
VFD controller allows for to cool the pump during
use.
fine tuning flow rate
Harder to decon than other
pumps
5. Controller ground fault error:
o Must disable or use a generator that does not have a ground fault interrupter.
o Ground cable has been cut and exposed, or ground cable has come loose at
pump.
Controller under or over voltage error:
o Generator is producing too much or little voltage. Adjust throttle on the
generator.
o Pump is clogged with sediment/fines and is overloading.
Not pumping water:
o The pump is clogged with sediment or fines, pull the pump up and clean.
o Pump is placed in the screened interval, possibly causing air/sediment to be
pumped in. Pumping in screened interval can also cause pump overheating
due to poor circulation of water over pump.
o Pump is placed too close to the bottom of the well, causing sediment/fines to
be pumped.
6. Supplies Accessories
Tubing: 3/8” ID or ½” ID Cooling Shroud – required
Polyethylene or Teflon for wells larger than 2”
Generator – If power is not
available on site, 2000 to
3000W generator
(depends upon pumping
depth) is necessary.
7. Take pump apart to inspect
rotor, impellers, wear plates,
etc.
Check for sediments, fines,
PVC shavings, etc.
Check for wearing and
swelling of parts.
Decontaminate using
Liquinox soap.
Change DI water lubricant in
stator housing.
8. • Type of Pumps: Submersible • Well Size: 2” or larger
• Power: 12V DC Power • Materials: Stainless Steel and
• Outlet: 3/8” barb PVC wire
Mega-Typhoon Monsoon Mega-Monsoon
Maximum Depth: Maximum Depth: Maximum Depth:
80 feet 120 feet 200 feet
PUMPING GALLONS PER PUMPING GALLONS PER PUMPING GALLONS PER
DEPTH (Ft) MINUTE DEPTH (DTW) MINUTE DEPTH (DTW) MINUTE
10 3.0 10 3.5 10 4.0
40 2.0 40 3.0 40 3.0
80 0.25 80 1.25 80 2.5
120 0.25 120 1.6
150 0.85
180 0.45
200 0.35
9. PROS CONS
Fits in 2” wells and larger PVC wire cuts or improperly
12V DC Power – can run installed motor module
off truck battery can cause water intrusion
into motor, causing failure.
Adjustable flow rate
Build-up of sediment can
Easy to decontaminate
cause motor failure
Field replaceable motor
Flow rate can be unsteady
modules
in comparison to other
Can handle warm water pumps.
10. Controller is not getting any power:
o Check the alligator clips to make sure they have a good connection (check for
corrosion on clips and battery terminals).
o Inspect wires for breaks or kinks.
o Check the fuse on the side of the controller. Even if the fuse looks good, it can still
be bad.
Not pumping water:
o Pump is clogged with sediment. Remove pump shield and inspect / clean motor and
pump housing.
o Pumping from screened interval or bottom of well.
o Motor is not getting power. Pull the pump up and make sure the motor is spinning
when powered. If not, contacts may need to be lifted to make good connection.
Check for wire break at motor, wiggle back and forth and see if there is intermittent
connection.
o Motor is burned up. Check for water damage. Check to see if motor shaft is bent or
damaged. Replace motor.
11. Supplies Accessories
Tubing: 3/8” ID Deep cycle 12V Battery
Polyethylene or Teflon Check Valve
Low flow control valve
12. Use wrench to remove pump
shield.
Twist motor off and check for
water intrusion and then
twist back on.
Clean external surfaces of
motor and internal/external
surfaces of the shield with
Liquinox soap and rinse with
DI water.
13. Type of Pump: Peristaltic
Maximum Depth: 26 feet
Maximum Flow: 2.5 LPM
Well Size: All
Power: 12V DC Power
Pump Head Tubing: 1 ft section Silicone
14. PROS CONS
Fits in any sized well your Can only pump to depths
tubing can fit in. of 26 feet.
12V DC Power – can run Low maximum flow rate
off truck or portable
battery
Adjustable flow rate
Disposable tubing, no
decon required.
Easily transported
Inexpensive
15. No power:
o Power cable is not making a good connection or there is a break in the cable.
Not pumping water:
o There is not enough water in the well
o The tubing is clogged with sediment/fines
16. Supplies Accessories
Recommended Tubing: 12V Power Pack
o Pump head: 3/16” ID x 3/8”
OD Silicone
o Down Well: ¼” OD Poly or
Teflon
17. Type of Pump: Bladder
Maximum Depth:
180 feet (with Geocontroller)
Volume/Cycle:
o 1.66” Pump: 150 mL
o 0.85” Pump: 29 mL
Well Size: 1” or larger
Power: 12V DC Power
Materials: Teflon and Stainless Steel
Bladders: Teflon or Polyethylene
Outlet:
o 1.66” Pump: 0.25”
o 0.85” Pump: 0.17”
18. PROS CONS
Can reach great depths Harder to operate than
depending upon most pumps
compressor and pressure Bonded tubing is
rating of pump. expensive
Fits in 1” well Takes a little time to
Low influence on turbidity change bladders
19. No power:
o Power cable is not making a good connection or there is a break in the cable.
Not pumping water:
o If pumping from a shallow depth, more fill time is required due to low head pressure.
Discharge time should be short, low pressure required to overcome head pressure.
o Bladder has been punctured or torn and needs to be replaced.
o O-ring has been damaged and pump is not getting a good seal. Replace O-ring.
Air in discharge line:
o Bladder is being over pressurized. Reduce discharge time on the controller
o Inspect O-rings and bladder
20. Supplies Accessories
1.66” Pump Tubing: None
o Bonded tubing:
• Air: 0.17” ID x 0.25” OD
• Water: 0.25” ID x 0.375”
OD
0.85” Pump Tubing:
o Bonded tubing:
• Air: 0.17” ID x 0.25” OD
• Water: 0.17” ID x 0.25” OD
Bladders:
o Teflon or Polyethylene
21. Take the pump apart by unthreading the bottom intake
assembly.
Remove the bladder. Inspect O-rings for damage.
Clean all parts with Liquinox soap and rinse with DI water.
Apply lubrication to O-rings if necessary.
Place new bladder into pump.
Reassemble pump
22. Type of Pump: Inertial
*Maximum Depth: ~ 250 Ft
*Maximum Flow: ~ 3.5 GPM
*Depends on foot valve, tubing, well size
Well Size: 0.5” to 4”
Power: 110V AC – 1000 watts
23. PROS CONS
Pump from great depth Requires 110V AC Power
Fits in wells up to 4”
No expensive parts to be
damaged inside well
Recommended for well
development
Small setup can fit in
damaged wells
24. Not pumping water:
o Foot valve may be clogged with sediment. Inspect and clean.
o Low density tubing used at too great of a depth which causes tubing to stretch. Use
higher density tubing.
o Well is too large, largest well size recommended is 4”. Too large of a well allows for
tubing wobble which reduces the vertical pumping action.
25. Supplies
Tubing – Low density Polyethylene for depths less than 70 feet
(due to stretching). High Density Polyethylene for depths greater
than 70 feet.
o 1” OD tubing for High Flow Foot Valves
o 5/8” OD or ½” ID tubing for Standard Flow Foot Valves
o ¼” ID tubing for Low Flow Foot Valves
o ¼” ID tubing for Micro Flow Foot Valves
Foot Valves:
o Stainless Steel or Delrin
Surge Block – Used to remove silt and sediment in bottom of well
and fines from the sand pack and well screen. Surge blocks only
can be used with 2” or 4” wells with standard or high flow foot
valves.
26. Type of Pump: Submersible
Maximum Depth: 200 feet
Maximum Flow: 3.5 GPM
Well Size: 2” or larger
Power: 115V AC – 1000 watts
Outlet: 3/8” barb
27. PROS CONS
Pump from up to 200 feet More expensive than other
Easy to decontaminate 12V pumps
Adjustable flow rate Motor module not easily
Can run off of AC or DC replaced in field
power using inverter Motor module is expensive
28. Using the 750 Watt DC to AC inverter causes the max pumping depth to
drop due to less power available. This problem can be avoided running
off of 115V AC
The pump is a new addition to our rental fleet, so far we have not run
into any other issues.
29. Supplies Accessories
Tubing: 3/8” ID Deep cycle 12V Battery
Polyethylene or Teflon Generator
DC to AC Inverter
Check Valve
30. Unthread pump outer housing and remove from top cap
Remove inner housing and motor. Unplug the motor from
the top cap.
Clean parts with Liquinox soap and rinse with DI water.
Insert motor back into inner housing and reassemble pump.
31. Type of Pump: Submersible
Maximum Depth: 100 feet (based on motor lead)
Maximum Flow: 20 GPM
Well Size: 4” or larger
Power: 115V AC
Outlet: 1” barb
32. PROS CONS
Has extremely high flow Requires 115V AC power
rate capability Very heavy and bulky,
Can run off of the same expensive to ship
VFD controller as Redi-Flo Large, can’t fit in wells
2 pump smaller than 4”
Can pump from very deep
wells.
33. Same issues as Redi-Flo 2 pump
Heavy & larger tubing, harder to lower into well.
34. Supplies Accessories
Tubing: 1” ID x 1.3” OD Generator
Reinforced PVC Check Valve
Flow Meter / Totalizer
35. Take pump apart to inspect rotor, impellers, wear plates,
etc.
Check for sediments, fines, PVC shavings, etc.
Check for wearing and swelling of parts.
Decontaminate using Liquinox soap.
36. Depth – How deep is your well and from what depth do you
need to pump?
Well Size – What size well do you have? What pumps will
fit?
Power – What kind of power options are available at your
site?
Cost – What is the most cost effective pump for what you
need to accomplish?
Other Considerations – Sampling method, well condition,
developing, etc.
37. If you have any questions about this presentation or the services we
offer, please feel free to call us at (888)274-8929 or e-mail
Info@enviroequipment.com.
For more information on Groundwater Pump Rentals, visit our
Groundwater Pump Rental Page, to purchase visit our Groundwater
Pump Sales Page, for tubing, rope and other disposable supplies
visit our Environmental Supplies Page, and to have your pump
repaired, visit our Environmental Equipment Repair Page. Thanks.
Eric Chew, GIT
Enviro-Equipment, Inc.
www.enviroequipment.com
Hinweis der Redaktion
Good for purging, low flow sampling, pump tests Can be used for developing but risky Should not be run at low levels for extended time because of cooling issue.
Good for purging, sampling, low flow sampling
The best option for shallow wells.
Well development
Maximum submergence pressure is 220 PSI = about 500 feet max depth.
Current client is using it to pump frac water
Flow meter / totalizer to track how much water has been discharged.