Geotech PVC Bladder Pumps 18 & 36” Installation And Operations Manual Pump

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Geotech

PVC Bladder Pumps

18” (91cm) & 36” (46cm)

Installation and Operations Manual

Rev 12/13/2012 Part# 11150188

1

Function and Theory

Geotech’s pneumatic Bladder Pumps operate with a unique action, ideal for both, gentle low-flow

sampling and high flow rate purging. Timed on/off cycles of compressed air alternately squeeze the

flexible bladder to displace water out of the pump to the surface and exhaust allowing the pump to

refill. Fluid enters the pump through the fluid inlet check valve at the bottom of the pump body, via

hydrostatic pressure (automatically by submergence). The bladder then fills with fluid. Compressed air

enters the space between the bladder and the interior of the pump wall housing. The intake check

valve closes and the discharge check valve opens. The compressed air squeezes the bladder,

pushing the fluid to the surface. The discharge check valve prevents back flow from the discharge

tubing. Driven by the Geocontroller II or Geocontrol PRO, this cycle automatically repeats.

Compressed air does not contact the sample! The bladder prevents contact between the pump drive

air and the sample.

Selecting an Air Source

To determine the required capacity of the air source used, use the following chart as reference.

AIR CONSUMPTION PER CYCLE

NO PUMP

GEO1.66SS18

GEO1.66SS36

NO TUBING

39in2

78in2

.17"ID x.25"OD (100' L)

27in2

66.25in2

105in2

.25"ID x .38"OD (100' L)

59in2

95in2

137in2

AIR CONSUMPTION PER HOUR (6 CYCLES/MIN)

GEO1.66SS18

GEO1.66SS36

.17"ID x.25"OD

25,000 in3

/hr

45,000 in3

/hr

.25"ID x .38"OD

35,000 in3

/hr

50,000 in3 /hr

2

Pump Specifications

GEO1.66PVC18

GEO1.66PVC36

Pump Components

PVC

PVC

Bladder Material

Virgin PTFE

Virgin PTFE

O.D.:

1.66”/4.2cm

1.66”/4.2cm

Weight

1.1lb/0.5kg

1.8lb/.82kg

Volume/Cycle

3.5oz./105ml

7oz./207ml

Min. Well I.D.

2”/50mm

2”/50mm

Operating Press.

10-125psi

.7-8.6bar

10-125psi

7-8.6 bar

Min. Operating Range

5psi/.34bar

5psi/.34bar

Maximum Depth

250’/76.2M

250’/76.2M

Maximum Operating Temperature

176°F (80C)

176°F (80C)

System Maintenance

As with any pump, scheduled or periodic maintenance should be performed, according to your

sampling program and specific site conditions. Generally, the more turbid or sandy your water, the

more often you should maintain and clean your pumps. Disassemble the bladder pump per

instructions, decontaminate or replace as needed, then reassemble. Inspect all check balls for wear

and replace as necessary. Inspect all O-rings for splits or cracks and replace as necessary.

Disassembly and Bladder Replacement

Pull pump from the well, it is not necessary to remove the air and sample lines from the pump.

Unscrew the lower cap from the housing, followed by removing the housing from the upper cap.

Wrench flat features are present on both upper and lower caps. Unscrew the compression rings from

the upper cap and lower head. Spanner wrench holes are located on the lower head to avoid spiral

damage to the internal tube. Pull the bladder assembly out from the upper cap. The internal bladder

cartridge can now be removed for maintenance or replacement. Please refer to the Components and

Assembly diagram located on the inside of this manual for reassembly.

3

Item

Qty

Description

Part No.

1

2

O-RING,VITON,#125,BROWN

17500120

2

2

O-RING,VITON,2.5MM X 23MM

11150319

3

2

O-RING,VITON,#014,BROWN

17500119

4

1

O-RING,VITON,2mm x 7.5mm,BROWN

16600108

5

2

BALL,VITON ,3/8, PVC BLADDER PUMP 1.66,TOP

17500115

6

1

HOSEBARB,CLEAR PVDF,1/8 NPT TO 5/32 BARB

11150187

7

1

HOSEBARB,POLY,MODIFIED,.25, PVC BLADDER PUMP 1.66

11150134

8

1

UPPER CAP,1.66,PVC,BP,CE

21150122

9

1

TUBE INTRNLSMPL,PVC,1.66BP,18"

11150124

10

2

RING,COMPRESSION,PVC,1.66,BP

21150115

11

1

BLADDER,PTFE,1.66"X18",PVC,CE

21150119

12

1

LOWER,HEAD,PVC,1.66,BP,CE

21150117

13

1

HOUSING,PVC,1.66X18",BP,CE

21150120

14

1

WEIGHT,SS6,INTERNAL,BP,PVC

11150132

15

1

PLUG,BALL RETAINER,1.66 PVC BP, CE

21150116

16

1

CAP,LOWER,PVC,1.66,BP,CE

21150114

17

1

SCREEN,INTAKE,1.66,PVC,BP,CE

21150118

18

1

CAP,SCREEN,INTAKE,1.3,PVC

11150131

19

1

CAP,LOWER,DROP TUBE,1.66,PVC, BP, CE

21150125

20

2

HOSEBARB,PP,1/2X3/8MPT

11150189

21

1

BODY,INTAKE,DROP TUBE,1.66,PVC, BP,CE

21150126

22

1

HOUSING,PVC,36",BP,CE

21150123

23

1

BLADDER,PTFE,1.66"X36",PVC,CE

21150124

24

1

TUBE,INTERNALSAMPLE,BP,36,PVC, 1.66X36

11150125

25

§

ASSY,LOWER CAP,1.66 PVC,DROPTUBE,CE,WITH 1/2" HOSEBARB

51150072

26

§

ASSY,INTAKE,1.66 PVC,DROP TUBE, CE,WITH 1/2" HOSEBARB

51150073

§

KIT, 1.66, PVC, 0-RING SET, CE [ITEMS: #1(2), #2(2),#3(2), #4(1)]

91150018

1

MANUAL

§

SOLD SEPERATLY

4

5

Troubleshooting

Cycling air with no sample

•Adjust the controller charge/exhaust times properly.

•Excessive drawdown may be preventing pump submergence.

•Screen intake needs to be submerged at least 5ft deep.

•Test cords and battery to ensure you have a sufficient power source.

•Clean any debris that may be clogging the intake screen.

Air bubbles present in sample

•Replace any O-Rings and bladder if showing tearing or damage.

•Repair or replace air and discharge lines if damaged or split.

Discharge line draining back into pump

•Remove the discharge hose barb and check ball and clean any debris in the check ball area.

Warranty

For a period of one (1) year from date of first sale, product is warranted to be free from defects in materials and workmanship. Geotech

agrees to repair or replace, at Geotech’s option, the portion proving defective, or at our option to refund the purchase price thereof.

Geotech will have no warranty obligation if the product is subjected to abnormal operating conditions, accident, abuse, misuse,

unauthorized modification, alteration, repair, or replacement of wear parts. User assumes all other risk, if any, including the risk of injury,

loss, or damage, direct or consequential, arising out of the use, misuse, or inability to use this product. User agrees to use, maintain and

install product in accordance with recommendations and instructions. User is responsible for transportation charges connected to the

repair or replacement of product under this warranty.

Equipment Return Policy

A Return Material Authorization number (RMA #) is required prior to return of any equipment to our facilities, please call 800 number for

appropriate location. An RMA # will be issued upon receipt of your request to return equipment, which should include reasons for the

return. Your return shipment to us must have this RMA # clearly marked on the outside of the package. Proof of date of purchase is

required for processing of all warranty requests.

Model Number: ________________ Serial Number: ________________

Date: ________________

Geotech Environmental Equipment, Inc.

2650 East 40th Avenue Denver, Colorado 80205

(303) 320-4764 ● (800) 833-7958 ● FAX (303) 322-7242

email: sales@geotechenv.com website: www.geotechenv.com