Enviro-Equipment, Inc.

Eric Chew

Types of pumps – submersible, bladder, peristaltic, and inertial

Pump specifications Pros and cons Supplies and accessories Common problems in the field Decontamination

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

PROS Inert materials – Stainless

Steel & Teflon High flow rate – up to 9

GPM Pump up to 300 feet depth Fits in 2” wells or larger VFD controller allows for

fine tuning flow rate

CONS Easy to damage

o Does not handle sediment well (not recommended for developing)

o Can overheat easily if run dry Requires 115V AC Power Requires water circulation

to cool the pump during use.

Harder to decon than other pumps

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.

Supplies Tubing: 3/8” ID or ½” ID

Polyethylene or Teflon

Accessories Cooling Shroud – required

for wells larger than 2” Generator – If power is not

available on site, 2000 to 3000W generator (depends upon pumping depth) is necessary.

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.

Mega-Typhoon Maximum Depth:

80 feet

Monsoon Maximum Depth:

120 feet Maximum Depth:

200 feet

Mega-Monsoon

PUMPING DEPTH (Ft)

GALLONS PER MINUTE

10 3.040 2.080 0.25

PUMPING DEPTH (DTW)

GALLONS PER MINUTE

10 3.540 3.080 1.25120 0.25

PUMPING DEPTH (DTW)

GALLONS PER MINUTE

10 4.040 3.080 2.5120 1.6150 0.85180 0.45200 0.35

• Well Size: 2” or larger• Materials: Stainless Steel and

PVC wire

• Type of Pumps: Submersible• Power: 12V DC Power• Outlet: 3/8” barb

PROS Fits in 2” wells and larger 12V DC Power – can run

off truck battery Adjustable flow rate Easy to decontaminate Field replaceable motor

modules Can handle warm water

CONS PVC wire cuts or improperly

installed motor module can cause water intrusion into motor, causing failure.

Build-up of sediment can cause motor failure

Flow rate can be unsteady in comparison to other pumps.

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.

Supplies Tubing: 3/8” ID

Polyethylene or Teflon Low flow control valve

Accessories Deep cycle 12V Battery Check Valve

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.

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

PROS Fits in any sized well your

tubing can fit in. 12V DC Power – can run

off truck or portable battery

Adjustable flow rate Disposable tubing, no

decon required. Easily transported Inexpensive

CONS Can only pump to depths

of 26 feet. Low maximum flow rate

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 wello The tubing is clogged with sediment/fines

Supplies Recommended Tubing:

o Pump head: 3/16” ID x 3/8” OD Silicone

o Down Well: ¼” OD Poly or Teflon

Accessories 12V Power Pack

Type of Pump: Bladder Maximum Depth:

180 feet (with Geocontroller) Volume/Cycle:

o 1.66” Pump: 150 mLo 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”

PROS Can reach great depths

depending upon compressor and pressure rating of pump.

Fits in 1” well Low influence on turbidity

CONS Harder to operate than

most pumps Bonded tubing is

expensive Takes a little time to

change bladders

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 controllero Inspect O-rings and bladder

Supplies 1.66” Pump Tubing:

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

Accessories None

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

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

PROS Pump from great depth 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

CONS Requires 110V AC Power

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.

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 Valveso 5/8” OD or ½” ID tubing for Standard Flow Foot Valveso ¼” ID tubing for Low Flow Foot Valveso 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.

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

PROS Pump from up to 200 feet Easy to decontaminate Adjustable flow rate Can run off of AC or DC

power using inverter

CONS More expensive than other

12V pumps Motor module not easily

replaced in field Motor module is expensive

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.

Supplies Tubing: 3/8” ID

Polyethylene or Teflon

Accessories Deep cycle 12V Battery Generator DC to AC Inverter Check Valve

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.

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

PROS Has extremely high flow

rate capability Can run off of the same

VFD controller as Redi-Flo 2 pump

Can pump from very deep wells.

CONS Requires 115V AC power Very heavy and bulky,

expensive to ship Large, can’t fit in wells

smaller than 4”

Same issues as Redi-Flo 2 pump Heavy & larger tubing, harder to lower into well.

Supplies Tubing: 1” ID x 1.3” OD

Reinforced PVC

Accessories Generator Check Valve Flow Meter / Totalizer

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.

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.

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, GITEnviro-Equipment, Inc.www.enviroequipment.com