Low Flow Sample Pump
222 Series
Operating Instructions
SKC Inc.
863 Valley View Road
Eighty Four, PA 15330 USA
Form 3707 Rev 1302
Table of Contents
Description ........................................................................................... 1
Performance Profi le ............................................................................2
Battery Installation/Charging .............................................................3
Installing the Battery Pack ......................................................................................... 3
Charging the Battery ................................................................................................. 3
Operation .............................................................................................. 4
Setting the Sampling Rate ......................................................................................... 4
Measuring Flow Rate ................................................................................................ 4
Sampling with Sorbent Tubes ................................................................................... 4
Determining the Pump Factor ................................................................................... 5
Sampling with Bags ................................................................................................... 5
Maintenance ......................................................................................... 6
Checking for Leaks .................................................................................................... 6
Changing the Battery ................................................................................................. 7
Replacement Parts and Accessories.................................................8
SKC Inc. Warranty ............................................................................... 9
Indicates a reminder or note.
Indicates a warning or caution.
Description
SKC 222 Series Low Flow Pumps are miniature diaphragm-type pumps for
personal or area sampling of gases and vapors in air using sorbent tubes or sample
bags. These reliable lightweight pumps are motor-operated and powered by
a rechargeable ba ery pack. Featuring reliable stroke counter technology, the
pump's stroke counter indicates the number of times the pump's diaphragm
has pulsed (or stroked) during the sampling period. By multiplying this
stroke number by the volume of air per stroke, an accurate determination
of air volume can be made. SKC sample pumps have special patented
valves that close positively, ensuring zero leaks. All working parts are housed in a
sturdy, shock-resistant case with belt clip. Model 222-3 pumps provide fl ows from
50 to 200 ml/min; Model 222-4 pumps provide fl ows from 20 to 80 ml/min.
Stroke Counter
On/Off Switch
Dial
Belt Clip
(not shown)
Charging Jack
222-3 Low Flow Pump
1
Performance Profi le
Flow Rate: 222-3: 50 to 200 ml/min
222-4: 20 to 80 ml/min
Operation Time: 10 hrs per battery charge
Case: Sturdy, lightweight plastic
Battery: Rechargeable NiCad, 2.4 V
Charge Time: 6 to 8.5 hrs with PowerFlex charger
(varies with ba ery
capacity and level of
discharge)
Battery Regulator: Holds voltage constant
Counter Readout: Shows pump strokes up to six digits
Valves: Zero-leak valves
Pumping Action: Diaphragm
Temperature Ranges: Operating: 32 to 113 F (0 to 45 C)
Charging: 32 to 113 F (0 to 45 C)
Storing: -4 to 113 F (-20 to 45 C)
Protect sample pump from weather when in use outdoors.
Tubing: Requires 1/4-inch ID tubing
Size: 5.1 x 2.5 x 1.25 in (13 x 6.4 x 3.2 cm)
Weight: 12 oz (340 gm)
Approvals: UL Listed for intrinsic safety; Class I, Groups A, B, C, and D
CE marked
Use only the SKC-approved battery and charger for this
model to ensure reliable performance and to maintain the
UL Listing for intrinsic safety. Failure to do so voids any
warranty.
2
Battery Installation/Charging
Installing the Battery Pack
To enhance ba ery life, SKC ships the ba ery pack separate from the
pump.
Once installed, completely charge the ba ery pack before operating
the pump. It may be necessary to charge the ba ery a few times before
maximum capacity is achieved.
1. Using a Phillips head screwdriver, remove six screws from the back of the
pump case.
2. Insert the ba ery pack inside the pump case with the label facing up.
3. Grasp the white connector from inside the pump case and the white connector from the ba ery. Ensure the two pins inside the pump connector align
with the two sockets inside the ba ery connector. Push the two connectors
together fi rmly until they click.
4. Ensure the connector is seated inside the pump case.
5. Replace the back plate on the pump ensuring the belt clip opens downward.
6. Replace and tighten the six screws.
Charging the Battery
For a complete charge, ensure the pump is not running during charging. Charge
the ba ery by connecting the charger plug to the sampler charging jack on the
right side of the pump (see charger operating instructions). Ensure that the ba ery
is fully charged before sampling.
A er charging the ba ery pack, it is good practice to run the pump for
approximately 5 minutes before measuring the fl ow rate. This ensures
the ba ery is in more steady state conditions.
The ba ery pack may be kept on the SKC-approved charger for an
indefi nite time.
Do not charge or operate pump from charger in hazardous locations.
Use only an SKC-approved charger designated for this model to ensure
reliable performance. Failure to do so voids any warranty.
Tampering with the battery pack voids any warranty.
Ensure proper orientation of charging cable before plugging it into the
charging jack. Improper orientation/contact will short circuit the battery
and voids any warranty.
Short-circuiting the battery pack will render it immediately inoperative.
Failure to follow warnings and cautions voids any warranty.
For more information on SKC pump ba eries,
go to h p://www.skcinc.com/instructions/1756.pdf.
3
Operation
Setting the Sampling Rate
1. Using a slo ed screwdriver, remove the metal plate on the front of the
pump.
2. Use the screwdriver to turn the fl ow adjust dial. Turning the dial clockwise
toward the 100 position increases fl ow, turning it counterclockwise toward
the 0 position decreases fl ow. The scale on the dial is arbitrary.
Measuring Flow Rate
Before use, allow pump to equilibrate after moving it from one temperature extreme to another.
1. Ensure pump has run for 5 minutes before measuring fl ow rate.
2. Using fl exible tubing, a ach the outlet of a representative sample tube to
the pump inlet.
3. A ach the inlet of the sample tube to a fi lm fl owmeter.
4. Turn on the pump using the on/off switch between the counter and the dial.
5. Measure the fl ow rate following the fl owmeter operating instructions. Ad-
just the fl ow by using the screwdriver to turn the dial clockwise to increase
fl ow or counterclockwise to decrease fl ow.
6. Disconnect the fi lm fl owmeter and the representative sample tube.
Sampling with Sorbent Tubes
Using the Stroke Counter
Before use, allow pump to equilibrate after moving it from one temperature extreme to another.
Protect sample pump from weather when in use outdoors.
Use of any device other than the approved battery pack to power the
pump voids the UL Listing for intrinsic safety and any warranty.
1. Record the initial counter reading.
2. Break the ends off a new sorbent tube.
3. Using fl exible tubing, connect the inlet of the sample pump to the outlet of
the sorbent tube.
4. Turn on the pump and sample for the desired sample period.
5. When sampling is completed, turn off the pump.
6. Disconnect and seal the sorbent tube.
7. Record the fi nal counter reading. Calculate the air volume using the fol-
lowing equation. To determine the pump factor, see page 5.
Air
Volume Reading Reading Factor
=
(
Final Counter
Initial Counter
-
4
)
Pump
x
Determining the Pump Factor
To determine the relation between the counter and the pump volume:
1. Using fl exible tubing, connect the pump inlet to the outlet of a fi lm fl owme-
ter.
2. Turn on the pump.
3. Turn the fl ow adjust dial to set the pump fl ow rate to 100 ml/min.
4. Turn off the pump.
5. Record the counter reading.
6. Turn on the pump and allow the pump to run for one minute.
7. Turn off the pump. Record the counter reading.
8. Subtract the fi rst counter reading from the second reading. This yields the
number of counts per 100 ml.
9. Calculate the pump factor (ml per count) using the following equation:
Pump Factor (ml per count) =
Number of Counts per 100 ml
100
The pump factor should be checked periodically. SKC recommends
performing this procedure a er every 40 hours of operation.
Sampling with Bags
The SKC 222 Series Low Flow samplers are also designed for sampling with
bags. It is important that precautions be taken to prevent contamination of the
pump when performing bag sampling.
Before use, allow pump to equilibrate after moving it from one temperature extreme to another.
Protect sample pump from weather when in use outdoors.
Use of any device other than the approved battery pack to power the
pump voids the UL Listing for intrinsic safety and any warranty.
1. Loosen the set screw on the outlet (exhaust) fi ing on top of the pump (see
Figure 1 on page 6).
2. Remove the fi ing by unscrewing counterclockwise.
3. A ach PTFE tubing to the exposed special fi ing. A ach the other end of
the tubing to the inlet valve on the sample bag.
4. See the bag operating instructions for details on the operation of the bag
fi ing(s).
When collecting bag samples, the contaminant passes through the
interior of the pump. The pump should be purged after bag sampling
to remove any remaining contaminant. To purge the pump, run it
for several minutes in a clean air environment. If the contaminant is
hazardous, take all necessary safety precautions.
Failure to follow warnings and cautions voids any warranty.
5
Maintenance
Checking for Leaks
To function properly and provide correct pumping volume, the diaphragm
must be free from leaks and close positively. Remove cover plate and check the
following:
Intake Valves
1. To check the intake valves for leaks, connect a water manometer and a tee
connection to the pump inlet as shown in Figure 1 below.
Outlet
(exhaust)
Inlet
Back of Pump
2. On the open end of the tee, draw vacuum by mouth until 4 to 5 inches of
water vacuum register on the manometer.
3. Seal off the open end of the tee and watch the manometer. The water level
should drop less than one-half inch in ten seconds.
Diaphragm and Valve System Integrity
1. With the water manometer and tee connected to the inlet (see Figure 1 above),
seal off the outlet of the pump and introduce positive pressure through the
open end of the tee until 4 to 5 inches of water register on the manometer.
2. While maintaining the pressure, seal off the open end of the tee and watch
the manometer. The water level should drop less than one-half inch in ten
seconds.
Exhaust Valve Seating
1. Disconnect the tee and water manometer from the pump inlet and connect
them to the outlet of the pump.
2. Introduce positive pressure through the open end of the tee until 4 to 5 inches
of water register on the manometer.
3. While holding this pressure, seal off the open end of the tee. Watch the
manometer. The water level should drop less than one-half inch in ten
seconds.
Open end
Figure 1.
of tee
Water manometer
6
Changing the Battery
1. Remove the six screws on the back of the pump case.
2. Grasp the white connector and pull it apart.
3. Gently pull the ba ery pack from the case.
Do not pull on red and black wires.
4. Remove the old ba ery pack and replace with the new ba ery pack.
5. Place the new ba ery pack inside the pump case with the label facing up.
6. Grasp the white connector from inside the pump case and the white connector from the ba ery. Ensure the two pins inside the pump connector
align with the two sockets inside the ba ery connector. Push the two con-
nectors together fi rmly until they click.
7. Ensure the connector is seated inside the pump case.
8. Replace the back plate on the pump ensuring the belt clip opens downward.
9. Replace and tighten the six screws.
10. Charge ba ery completely.
Tampering with the battery pack voids the UL Listing for intrinsic safety
and any warranty.
Use of a repaired or rebuilt battery pack voids any warranty.
Failure to follow warnings and cautions voids any warranty.
For more information on SKC pump ba eries,
go to h p://www.skcinc.com/instructions/1756.pdf.
7
Replacement Parts and Accessories
Part Description Cat. No.
Motor (Model 222-3) P222301
Motor (Model 222-4) P222402
Battery Pack 222-3SR-04
Eccentric P222302
Counter P222304
Bearing/Ring/Stem Assembly P222305
Diaphragm Disc Assembly P222308
Switch P222310
Links - Counter/Eccentric P222313
Pump case with Meter,
Switch, Pot, and Window P222314UL
Potentiometer Control P222316
C-1 Connector P222317
C-2 Connector P222319
Window P222322
Body/Valve Assembly P222323
Neoprene Gasket P222324
Stainless Steel Back Plate P222325
Case Fitting - Inner-Male P222326
Case Fitting - Outer-Female P222327
O-ring (pk/10) P222328
Jack P222331
Angle Bracket P222332
Body Valve Set P222334
Accessories Cat. No.
Film Flowmeter Kit, 5 to 500 ml/min
measuring range 303
PowerFlex Charger
5-station, 100-240 V 223-1000
Single, 100-240 V 223-2000
PowerFlex Charging Cable
for 222 Low Flow Pumps 223-1005
Tube Holders:
Type A fi ts tubes 6 mm OD x 70 mm L 222-3-1
Type B fi ts tubes 8 mm OD x 110 mm L 222-3L-1
Type C fi ts tubes 10 mm OD x 150 mm L 222-3XL-1
Type D fi ts tubes 10 mm OD x 220 mm L 222-3XD-1
8
SKC Limited Warranty and Return Policy
SKC products are subject to the SKC Limited Warranty and Return Policy, which
provides SKC’s sole liability and the buyer’s exclusive remedy. To view the com-
plete SKC Limited Warranty and Return Policy, go to h p://www.skcinc.com/
warranty.asp.
SKC pumps must be repaired by SKC or an authorized SKC repair center. Failure to do so voids intrinsic safety approvals and any warranty.
Use only SKC-approved parts to ensure reliable performance. Failure
to do so voids any warranty.
Failure to follow warnings and cautions voids any warranty.
9
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