Soilmoisture Equipment 2006G2 User manual

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
1
SOILMOISTURE
OPERATING
INSTRUCTIONS
2006G2 Pressure-Vacuum Hand Pump July 2011
2006G2

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
SOILMOISTURE
TABLE OF CONTENTS
UNPACKING .......................................................................................................................................1
ACQUAINT YOURSELF WITH THE PARTS ...................................................................................1
REMOVAL OF AIR FROM TENSIOMETERS ..................................................................................2
PULLING A VACUUM IN THE SOIL WATER SAMPLER .............................................................3
AND REMOVING A COLLECTED WATER SAMPLE.....................................................................4
AS A VACUUM SOURCE FOR PORTABLE EXTRACTORS...........................................................5
TO CHECK THE CALIBRATION OF TENSIOMETER DIAL GAUGES........................................6
GENERAL CARE AND MAINTENANCE .........................................................................................7
MINOR ADJUSTMENTS....................................................................................................................8
REPLACEMENT PARTS ....................................................................................................................8

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
3
SOILMOISTURE
The 2006G2 Pressure Vacuum Hand Pumps provide versatile, simple tools for many servicing and calibrat-
ing operations on our various tensiometers. They supply a source of vacuum for our soil water samplers and
portable extractors.
UNPACKING
The 2006G2 Pressure -Vacuum Hand Pump shipped to you is completely assembled and has been thor-
oughly tested before shipment. When packed, it was in perfect working order. Unpack with care being sure
to remove all packing material.
Follow the instructions carefully in order to assure long trouble-free service.
NOTICE: ANY DAMAGE FOUND UPON RECEIPT, SHOULD BE REPORTED IMMEDIATELY TO THE
TRANSPORT CARRIER FOR CLAIM. IT IS IMPORTANT THAT YOU SAVE SHIPPING CONTAINER
AND ALL EVIDENCE TO SUPPOR T YOUR CLAIM.
Be sure to read all operating instructions thoroughly before operating the unit.
ACQUAINT YOURSELF WITH THE PARTS
The 2006G2 Pressure-Vacuum Hand Pump is used for calibrating other vacuum dial gauges as used on our
tensiometers, and for pulling a vacuum in our soil water samplers, portable extractors, and other units.
The vacuum dial gauge is a Bourdon Tube-type gauge and measures the vacuum in the unit. It is graduated
0-100 centibars (or 1 Bar) of soil suction. The vacuum dial gauge was hermetically sealed at the factory,
at sea level. If you live at a high elevation, the pointer on the dial gauge may be reading higher than zero.
This is due to the lower atmospheric pressure at your elevation. Before putting the unit to use, vent the dial
gauge by momentarily removing the vent screw in the clear plastic
gauge cover, see Fig. 1. Use a small screwdriver for this purpose. After
venting, return the vent screw to the gauge cover.
The Handle is made from laminated hardwood and is 10” long by 1”
diameter. The Top Cap is made from grey PVC and incorporates an
air vent hole to vent the air from the tube while pulling a vacuum.
The Tube is made from a low leaded brass tube and is chrome plated
for corrosion resistance. The Leather Cup Washers and Steel Wash-
ers combine to make a vacuum and pressure seal on the inside walls
of the tube during the pumping action. The Valve Body is made from
grey PVC which has machined cavities to hold the polypropylene check
valves and the vacuum and pressure ttings.
The Vacuum Fittings and Pressure Fittings are 1/4" NPT by 1/4" tube
brass ttings which are chrome plated for corrosion resistance. The
Base is made from laminated hardwood, the same type as used on the
handle and measures 3" wide by 12" long by 3/4" thick, and is held to
the valve body by way of two 1/4-20 by 1-1/4 long stainless steel hex head cap screws. Both units measure
approximately 22" in height and will store easily in most any space.
Figure 2

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
SOILMOISTURE
Fig. 4 shows how a vacuum is pulled in a dial type
tensiometer to remove air bubbles from the unit before
it is installed in the soil.
REQUIREMENTS PRIOR TO USE
An Inline Air Filter is supplied with the Pressure
Vacuum Hand Pump to lter out any debris that
might get into air lines while using the pump. Place
the lter in the air line between the pump and the
unit with the arrow on the lter pointing in the direc-
tion of ow.
REMOVAL OF AIR FROM TENSIOMETERS
USING PRESSURE/VACUUM HAND PUMP
The adapter tting should be assembled into the 3/16"
I.D. rubber hose and the hose pushed on the vacuum
tting of the hand pump. Hold the adapter tting
rmly against the “0” ring seal in the lter end of the
tensiometer body to create a seal, as shown in Fig. 2.
As the pump handle is pulled up, the vacuum created
within the tensiometer will cause the air to bubble
from the vacuum dial gauge stem and up to the
surface of the water. After each pumping, to release
the vacuum, tilt the adapter tting slightly to slowly
break the seal between the adapter tting and “0”
ring seal, as shown in Fig. 3
This will enable the gauge needle to return to zero
slowly without damage to the gauge. Additional water
is added to the tensiometer after each pumping. The
pumping operation should be repeated four to ve
times to 2 gradually remove all of the air.

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
5
SOILMOISTURE
the bottom of the sampler. The other end of the plastic
tube is pushed into one of the holes in the two-hole
rubber stopper.
The vacuum tting of the pump is connected to the
other hole in the stopper, Fig. 8, and then pumped
to create a vacuum within the ask or bottle. The
vacuum will pull the sample up from sampler, through
the plastic tube and into the ask or bottle.
PULLING A VACUUM IN THE SOIL WATER
SAMPLER AND REMOVING A COLLECTED
WATER SAMPLE USING THE 2006G2 PRES-
SURE-VACUUM HAND PUMP
For the 1900 Soil Wa-
ter Sampler, insert
the vacuum fitting
into the rubber tube
of the stopper as-
sembly, Fig. 6. The
pinch clamp on the
stopper assembly is
opened and the pump
is then stroked until
a vacuum of perhaps
60 centibars (18" of
mercury) or more, is
created within the sampler as read on the vacuum
dial gauge. When a sufcient vacuum is reached, the
pinch clamp is closed to retain the vacuum within the
sampler. The pump can then be removed for other
uses.
To remove the collected soil water sample from the
1900 Soil Water Sampler, a simple assembly is used
made of a small xxx diameter plastic tube (3/32"
O.D. or less), a two-hole rubber stopper, and a ask
or bottle, as shown in Fig. 7. The pinch clamp on the
sampler is opened, and the small diameter plastic
tube is inserted into the end of rubber tube on the
stopper assembly and pushed down until it reaches

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
SOILMOISTURE
On the Model No. 1920 Pressure-Vacuum Soil Water
Sampler, the pinch clamp on the discharge access tube
is closed and the vacuum tting of the Pressure-Vacu-
um Hand Pump is connected to the pressure-vacuum
access tube, Fig. 9. The pump is then stroked until a
vacuum of about 60 centibars (18” of mercury) is cre-
ated within the sampler, as read on the vacuum dial
gauge connected to the pump. The pinch clamp on the
pressure vacuum access tube is then closed securely
to seal the sampler under vacuum. The hand pump
can now be disconnected for other uses. To remove the
collected soil water sample from the Model No. 1920
Pressure Vacuum Soil Water Sampler, attach the
pressure-vacuum access tube to the pressure tting
of the Pressure-Vacuum Hand Pump, Fig. 10. Place
the discharge access tube in a small collection bottle
and open both pinch clamps. Apply a few strokes on
the hand pump to develop enough pressure within
the sampler to force the collected sample out of the
sampler and into the collection bottle.
USING THE 2006G2 PRESSUREVACUUM
HAND PUMP AS A VACUUM SOURCE FOR
PORTABLE EXTRACTORS
Connect a length of 3/16” I.D. rubber hose to the
connection tting of the portable extractor and the
vacuum tting of the pump, Fig. 11. A pinch clamp
is placed on the rubber tube and left open. A vacuum
of 80 to 90 centibars is then pulled, using the pump,
within the extractor as read on the vacuum dial
gauge. After the vacuum is pulled, the pinch clamp is
closed, and the pump can be removed for other uses.
The vacuum created within the extractor will cause
the soil water sample to move from the funnel into
the collection bottle.
USING THE PRESSURE/VACUUM HAND
PUMP TO CHECK THE CALIBRATION OF
TENSIOMETER DIAL GAUGES
The adapter tting on the end of the rubber hose is
inserted into the ller end of the tensiometer body
and held tightly against the “0” ring seal to make
a vacuum-tight seal, as explained previously. As a
vacuum is pulled within the tensiometer, the reading
of the vacuum dial gauge on the tensiometer can be
compared with the reading of the vacuum dial gauge
on the pump, which is used as the reference gauge.
In checking the calibration of the vacuum dial gauge,
it is always desirable to lightly tap the gauge case to
relieve the internal friction of the gauge mechanism
to obtain the most accurate reading.
GENERAL CARE AND MAINTENANCE
When the 2006G2 Pressure-Vacuum Hand Pumps are
used for air removal or pulling a vacuum, very little
maintenance of the unit is required. If, however, the
pump will not hold a vacuum or has a pressure leak,
the check valves of the pump could be leaking due
to accumulation of debris. The check valves can be
removed to be ushed and cleaned of particles which
may interfere with their proper sealing action. To
remove the check valves, unscrew the tube from the

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
7
SOILMOISTURE
valve body and remove the holding plate at the bot-
tom of the tube cavity, Fig. 12~ The check valves can
then be removed from the valve body, taking care to
observe the correct orientation of each check valve,
as they are the same in construction. The vacuum
check valve should have the arrow on the side pointing
towards the handle while the pressure check valve
should have the arrow pointing towards the base.
Once the check valves are removed, the valves can
be disassembled by inserting a knife blade into the
joint, Fig. 13, created by the body and cap, and pry-
ing the two pieces apart revealing the rubber sealing
disc. Flush any accumulated debris is from inside the
body, and clean the sealing disc of debris. Reassemble
the check valve, pressing the body and cap together,
and insert the valve into the valve body as shown in
Fig. 12. If the Inline Air Filter gets clogged due to
the accumulation of debris, attach the air lter to
the pressure inlet of the pump, in the opposite direc-
tion of ow used, and blow the debris out of the air
lter with one or Cap two pumps from the Pressure-
Vacuum Hand Pump.
MINOR ADJUSTMENTS
To Adjust the Pointer
First remove the vent screw from the dial gauge and
insert a small screwdriver through the hole in the
gauge cover plate to engage the slot in the adjust-
ing screw. If the gauge was reading high, tum the
screwdriver clockwise an estimated amount to cor-
rect the error. If the gauge was reading low, turn the
screwdriver counterclockwise an estimated amount
to correct the error. Repeat the process if necessary
until the pointer is on the zero position.

SOILMOISTURE EQUIPMENT CORP.
P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.
Telephone [phone] - Fax No. 805-683-2189
Email: [e-mail] - Website: http://www.soilmoisture.com
8
SOILMOISTURE
ITEM PART # DESCRIPTION
12 2006G1-007 Check Valve
13 2006G1-008 Holding Plate
14 2006G1-009 Plunger Support
15 2006G1-100 Handle Assemby
16 1920K1-100 Gauge Adapter Assembly
17 2060FG3 Vacuum Dial Gauge, 2-inch
Dial, 1/4" NPT Gauge Stem,
Recalibrator-style
18 2006G1-003 Adapter Fitting
19 MML043 Air Filter
20 1900-203 Neoprene Tube
© COPYRIGHT 2011 ALL RIGHTS RESERVED 0898-2006G2 (07/11)
2006G2 PARTS LIST
ITEM PART # DESCRIPTION
1 MML029 Leather Plunger
2 RW030SCR Washer
3 R2420CAH Hex Nut
4 RW040BNR Washer
5 Q2420CAH20 Cap Screw, 1/4-20 X 1-1/4
6 2006G1-001 Base
7 2006G1-002 Valve Body
8 2006G1-004 Outlet Fitting
9 M801X112 Neoprene "O" Ring
10 2006G1-005 Tube
11 2006G1-006 Top Cap
INDIVIDUAL REPLACEMENT PARTS