Operating Instructions
Universal Sample Pump
Cat. No. 224-PCXR8
SKC Inc.
863 Valley View Road
Eighty Four, PA 15330
Form 37713 Rev 1302
Table of Contents
Description ..................................................................... 1
Performance Profi le ........................................................................................ 2
Operation ........................................................................ 5
High Flow Applications ...................................................................................5
Low Flow Single-tube Applications ............................................................... 10
Low Flow Multiple-tube Applications ............................................................15
Maintenance ................................................................. 20
Pump Inlet Filter ...........................................................................................20
Battery Pack Care ........................................................................................20
Installing the Battery Pack ............................................................................21
Replacing Battery Pack ................................................................................21
Pump Service ...............................................................................................22
Warranty ....................................................................... 22
Parts Descriptions ....................................................... 24
Replacement Parts ...................................................... 26
Optional Accessories .................................................. 28
Indicates a warning or caution
Indicates a note or a premier feature of the pump
Universal Sample Pump Operating Instructions are also available in
Spanish, German, Mandarin, and French Canadian.
Description
The PCXR8 Universal Sample Pump is a constant fl ow air sampler suitable for a
broad range of applications. It is ideal for industrial hygiene studies as well as
environmental testing.
Durable RFI-shielded Case
provides protection from radio
frequency interference
between 27 and 1000 MHz.
Low Flow Regulator
(beneath cap screw)
allows pump to be switched
from high to low fl ow.
Rechargeable Battery
Digital LCD
shows run time, set times,
battery check, and fault functions.
Tamper-resistant Cover
prevents changes to settings.
Recessed Flow Adjustment
adjusts fl ow rate between
1000 and 5000 ml/min.
On/Off Switch
Air Discharge Port
(beneath cap screw)
Touch Keypad
for programmable
functions.
Accessory Mounting Screws
allow sampling accessories
such as impinger holders
to be secured to pump.
Built-in
Particulate Trap
in see-through
housing
protects pump.
Built-in Rotameter
provides a visible check
of relative fl ow rate during
sampling, from 0.5 to 5 L/min.
PCXR8 Universal Sample Pump
1
Performance Profi le
Flow Range: 1000 to 5000 ml/min (UL Listed model)
Weight: 34 oz (964 gm)
Dimensions: 5.1 x 4.7 x 1.9 in (13 x 11.9 x 4.8 cm)
Compensation Range: 1000 to 2500 ml/min at 40 inches water back pressure
Typical Back Pressure of Sampling Media (inches water)
Flow Rate (L/min) 1.0 1.5 2.0 2.5 3.0
Filter/Pore Size (μm)
25-mm MCE, 0.8 6 9 12 15 18
25-mm MCE, 0.45 14 22 28 35 40
37-mm MCE, 0.8 23456
37-mm PVC, 5.0 11222.5
Compare the information in this table to pump compensation range to determine appropriate applications.
Flow Control: Holds constant fl ow to ± 5% of the set point
Run Time: NiCad Battery: 8 hrs minimum at 4000 ml/min and 20 inches water back pressure;
NiMH Battery: 12 hrs minimum at 4000 ml/min and 20 inches water back pressure;
Flow Indicator: Built-in rotameter with 250-ml division; scale marked at 1, 2, 3, 4, and 5 L/min
Power Supply: 6.0-V plug-in NiMH battery pack, rechargeable, 3.5-Ah capacity or
Charging Time: 6 to 8.5 hrs with PowerFlex charger
(varies with ba ery capacity
and level of discharge)
Intrinsic Safety: UL Listed for: Class I, Division 1 and 2, Groups A, B, C, D; Class II,
Temperature: Operating: 32 to 113 F (0 to 45 C)
Operating Humidity: 0 to 95% non-condensing
Multiple-tube Sampling: Built-in constant pressure regulator allows user to take up to four simultaneous tube
RFI/EMI Shielding: Complies with requirements of EN 55022, FCC Part 15 Class B, EN 50082-1;
(5 to 500 ml/min requires adjustable low fl ow holder)
3000 ml/min at 35 inches water back pressure
4000 ml/min at 20 inches water back pressure
5000 ml/min at 10 inches water back pressure
dependent on media used. See Table 1 on page 4.
dependent on media used. See Table 2 on page 4.
Battery Eliminator: Pump will provide extended runs.
6.0-V plug-in NiCad battery pack, rechargeable, 2.0-Ah capacity
A battery eliminator is available (see Optional Accessories); use voids the UL Listing for intrinsic safety.
Division 1 and 2, Groups E, F, G; and Class III, Temperature Code T3C
ATEX-approved models available. Contact SKC.
Storage: -4 to 113 F (-20 to 45 C)
Charging: 50 to 113 F (10 to 45 C)
Protect sample pump from weather when in use outdoors.
samples at different fl ow rates up to 500 ml/min each using optional adjustable low
fl ow holder.
frequency range of the radiated susceptibility test was 27 to 1000 MHz.
2
Flow Fault: If the pump is unable to compensate for longer than 15 seconds due to exces-
sive back pressure, the pump enters fl ow fault. During fl ow fault, the pump stops,
displays FLOW FAULT, pauses timing functions, and displays elapsed time or
pump time. Auto-restart is attempted up to 5 times.
Low Battery Fault: Pumps stops, displays LO BATT, pauses timing functions, and displays elapsed
time or pump time.
Battery Test: LCD shows battery condition prior to sampling.
Time Display: LCD displays up to 9999 minutes (6.8 days) at which point the display rolls over
to 0. Displays include sampler run time in minutes for sampling period elapsed
time, pump run time, or total elapsed time including delayed start
Timing Accuracy: ± 0.05% (± 45 seconds per day)
Timed Shutdown: Allows user to select minutes of operation before automatic shutdown.
Timed shutdown maximum setting is 9999 minutes (6.8 days).
Sampling Pause (Hold): Allows user to temporarily halt sampling without loss of timing data. Restart does not
require resetting time.
Delay On: Allows user to select minutes to delay test up to 9999 minutes (6.8 days)
Intermittent Sampling: Programmable to allow user to extend short-term samples over an extended period
of time to meet time-weighted average (TWA) requirements with a reduced number
of samples. Elapsed time maximum setting is 9999 minutes (6.8 days), at which time
the sample pump shuts down.
Tubing: Requires 1/4-inch ID tubing
CE marked UL Listed
ATEX-approved models available
3
Table 1. Pump Run Time in Hours with NiCad Battery
Following are typical run times achieved when using a fully charged nickelcadmium (NiCad) battery pack. Data is sorted by type of sample media. All run
times are listed in hours. Results obtained using a new pump and new fully
charged battery. Pump performance may vary.
Mixed Cellulose (MCE) fi lter, 0.8-μm pore size
Flow Rate (L/min)
2.0 24.1 16.3
2.5 21.4 14.5
3.0 19.1 11.0
3.5 17.8 10.7
4.0 15.4 **
4.5 14.6 **
Polyvinyl Chloride (PVC) fi lter, 5.0-μm pore size
Flow Rate (L/min)
2.0 31.6 21.7
2.5 27.7 24.0
3.0 27.0 18.6
3.5 22.8 16.4
4.0 19.4 16.2
4.5 19.0 14.6
** Filter back pressure exceeded pump capability during testing.
Filter Diameter
37 mm 25 mm
Filter Diameter
37 mm 25 mm
Note
Increases in back pressure during sampling due to buildup of sample
on the fi lter can decrease ba ery life.
Table 2. Pump Run Time in Hours with NiMH Battery
Following are typical run times achieved when using a fully charged nickel-metal
hydride (NiMH) battery pack. Data is sorted by type of sample media. All run times
are listed in hours. Results obtained using a new pump and new fully charged
battery. Pump performance may vary.
Mixed Cellulose (MCE) fi lter, 0.8-μm pore size
Filter Diameter
37 mm 25 mm
Filter Diameter
37 mm 25 mm
Note
Flow Rate (L/min)
2.0 37 33
2.5 34 26
3.0 31 21
3.5 29 18
4.0 25 15
4.5 20 14
Polyvinyl Chloride (PVC) fi lter, 5.0-μm pore size
Flow Rate (L/min)
2.0 47 41
2.5 38 33
3.0 35 30
3.5 26 27
4.0 22 25
4.5 21 23
Increases in back pressure during sampling due to buildup of sample
on the fi lter can decrease ba ery life.
4
Operation
13
AIRCHEK
SAMPLER
5
4
3
2
1
SAMPLE PERIOD Ñ MINUTES
START
HOLD
FLOW
AND
BATTERY
CHECK
DIGIT
SET
PUMP
RUN
TIME
DIGIT
SELECT
TOTAL
ELAPSED
TIME
SET-UP MODE
FLOW
ADJ
ON
AIRCHEK SAMPLER
MODEL 224-PCXR8
U
L
¨
LISTED 124U
11
22
18
BACK
TOP
FRONT
12
8
7
6
5
4
3
2
20
20
19
High Flow Applications (1000 to 5000 ml/min)
2 Flow and battery check key
3 Start/hold key
4 Mode key
5 Set-up key
6 Digit set/pump run time key
7 Digit select/total elapsed
time key
8 On/off switch
11 Flow adjustment screw
Figure 1
Front, back, and top views of PCXR8 Sampler
For additional drawings, see pages 25 and 27.
12 Accessory mounting screws (2)
13 Intake/fi lter housing
18 Cap screw to regulator
19 Cap screw to air discharge port
20 Battery pack screws (2)
22 Charging jack
Setup
Install battery (see Installing the Battery Pack on page 21). For optimum
charge, ensure pump is not running. Charge the battery by connecting the
charger plug to the sampler charging jack (Figure 1, #22). Ensure that the
battery is fully charged before sampling.
After charging the battery pack, it is good practice to run the pump for
approximately fi ve minutes before calibrating. This ensures the battery is in more
1
steady-state conditions and improves the agreement in pre
and post-sampling calibrations.
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.
Ensure proper orientation of charge 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.
The battery pack may be kept on the SKC-approved charger
for an indefi nite time.
Charger and battery
pack connected
5
2
De-activating the Regulator
To ensure the pump is set for high fl ow,
remove the cap screw (Figure 1, #18)
covering the regulator valve and turn the
exposed screw clockwise until it stops.
(Do not overtighten.)
3
Replace the cap screw. The pump is
now set for high fl ow.
For high fl ow,
turn valve screw clockwise.
Setting or Verifying Flow Rate
Before use, allow pump to equilibrate after moving it from one temperature
extreme to another.
Ensure pump has run for
fi ve minutes before proceeding with calibration.
Using 1/4-inch Tygon®
tubing, connect the sampling medium to the pump
intake (Figure 1, #13).
Remove the tamper-resistant cover. Start the pump
using the On/Off switch
(Figure 1, #8). Press Start/Hold
(Figure 1, #3). Press Flow and Battery Check (Figure 1, #2). Adjust the fl ow using the fl ow adjustment screw (Figure 1, #11) until
the built-in rotameter reads 2 L/min. The LCD should indicate
BATT OK in the upper left corner (if it doesn’t, recharge the battery). Press Flow and Battery Check to place the pump in Hold.
Flow
adjustment
control
Sample
media
On/Off
switch
Calibrator
Calibration train with
fi lter cassette
Tubing
Connect a calibrator to the intake of the sampling medium.
Press Flow and Battery Check to start the pump, and set the fl ow
rate using the fl ow adjustment control (Figure 1, #11).
When the fl ow rate is set, press Flow and Battery Check to place
the pump in Hold. Disconnect the calibrator.
Replace the sampling medium used for calibration with an
unexposed medium for sample collection.
6
4
Programming Delayed and Intermittent
Sampling
To enter Delayed Start Mode:
From Hold, press Set-up. Enter
the number of minutes delay (up
to 9999) before the sampling
period begins by pressing Digit
Select and Digit Set. Digit Select
advances the fl ashing digit and
Digit Set increases the value of the
fl ashing digit.
To enter Sample Period Mode:
Press Mode. Press Digit Select
and Digit Set to enter the sampling
time period in minutes (up to
9999). Note: The sample period is
the total period in which sampling
is performed and not the pump run
time.
To enter Pump Period Mode:
Press Mode. This is the actual
running time of the pump. Use
Digit Select and Digit Set to enter
the pump run time in minutes (up
to 9999).
Intermittent Sampling Options:
Option 1 - Sample Period and
Pump Period Both > 10 Minutes
Ensure the Sample Period and Pump Period are set to be greater
than 10 minutes. Set the Pump Period for less time than the
Sample Period to initiate intermittent sampling. The pump will
automatically calculate pump “off” time and run 10 equal cycles
of “on” and “off” over the sampling period beginning with the
fi rst “on” time. Delayed start may be used with this option.
Option 2 - Sample Period and Pump Period Both < 10 Minutes
Ensure the Sample Period and Pump Period are set to be less than
10 minutes. The minimum “on” or “off” time setting is one minute.
continued on page 8
7
PCXR8 Keypad
4
(cont’d)
5
Set the Pump Period for less time than the Sample Period to initiate
intermittent sampling. The pump will automatically cycle “on” and
“off” at one-minute intervals adjusting the fi nal “on” or “off” time
to as many minutes as needed to reach the total programmed time.
If intermittent sampling is not desired, set the Sample Period to
equal the Pump Period.
Pressing Mode will scroll through the program sequence.
For intermittent sampling, the elapsed time maximum setting is
9999 minutes (6.8 days), at which time the sample pump will
shut down.
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.
For personal sampling, clip the sample
collection medium to the worker in the
breathing zone.
While the LCD displays HOLD, start
sampling by pressing Start/Hold. If a time delay has been
programmed, DELAYED START will fl ash on the LCD and
the amount of time remaining until sampling starts will appear.
SAMPLE RUNNING will display when the delay sequence has
ended. The LCD will automatically track sampling period time
elapsed.
Clip sample medium
to worker and pump to
belt.
At the end of the sampling period, press Start/Hold and record
the stop time.
continued on page 9
8
User Options During Sampling
Pause - Pause (shutdown) the pump by pressing Start/Hold. All
timing data will freeze. To resume sampling, press Start/Hold;
timing data will resume.
Flow or Battery Fault Shutdown - If the pump is unable to
compensate due to excessive back pressure or a low battery
condition exists the sampler will shut down. HOLD will display
on the LCD and timing functions will pause, but continue to display
total elapsed time or pump time when buttons are pressed. LO
BATT or FLOW FAULT will display on the LCD depending on
the cause of the shutdown. Fifteen seconds after fl ow fault shut
down, the pump will attempt to restart up to fi ve times. To restart
from fl ow fault, correct the blockage and press Start/Hold. If LO
BATT is displayed, recharge the battery before sampling.
Display Times - Elapsed sampling period is continuously
displayed on the LCD. Press and hold Pump Run Time
(Figure 1, #6) to display pump run time. Press and hold
Total Elapsed Time (Figure 1, #7) to display total elapsed
time, including delayed start time.
5
(cont’d)
Sampling with Impingers
When using impingers, place an in-line trap
between the pump and the impinger to protect
the sampler from liquid or vapors. The impinger
and trap can be mounted to the sampler using
the accessory mounting screws (Figure 1, #12)
or placed in a holster at the worker’s waist.
Failure to use the impinger trap voids any warranty.
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.
Pressure Applications (Bag Sampling)
When using the pump for pressure
applications, such as bag sampling, thread the
exhaust port fi tting supplied with the pump
into the air discharge port on top of the pump
(Figure 1, #19); hand tighten only. Using
PTFE tubing, connect the inlet of the sample
medium (e.g., sample bag) to the exhaust
port fi tting on the pump. Turn on the pump
to collect the appropriate volume of air. Shut
off pump and close inlet on sample medium
to stop sampling.
Impinger holder on
pump with impinger
Thread exhaust
port fi tting into air
discharge port on
and trap
pump.
9
Low Flow Applications (5 to 500 ml/min)
13
AIRCHEK
SAMPLER
5
4
3
2
1
SAMPLE PERIOD Ñ MINUTES
START
HOLD
FLOW
AND
BATTERY
CHECK
DIGIT
SET
PUMP
RUN
TIME
DIGIT
SELECT
TOTAL
ELAPSED
TIME
SET-UP MODE
FLOW
ADJ
ON
AIRCHEK SAMPLER
MODEL 224-PCXR8
U
L
¨
LISTED 124U
11
22
18
TOP
FRONT
12
8
7
6
5
4
3
2
20
20
19
Using Single Adjustable Low Flow Holder
2 Flow and battery check key
3 Start/hold key
4 Mode key
5 Set-up key
6 Digit set/pump run time key
7 Digit select/total elapsed
time key
8 On/off switch
Figure 1
Front, back, and top views of PCXR8 Sampler
For additional drawings, see pages 25 and 27.
11 Flow adjustment screw
12 Accessory mounting screws (2)
13 Intake/fi lter housing
18 Cap screw to regulator
20 Battery pack screws (2)
22 Charging jack
1
Setup
Install battery (see Installing the Battery Pack on page 21). For optimum
charge, ensure pump is not running. Charge the battery by connecting the
charger plug to the sampler charging jack (Figure 1, #22). Ensure that the
battery is fully charged before sampling.
After charging the battery pack, it is good practice to run the pump for
approximately fi ve minutes before calibrating. This ensures the battery is in
more steady-state conditions and improves the agreement in pre and postsampling calibrations.
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.
Ensure proper orientation of charge 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.
The battery pack may be kept on the SKC-approved charger
for an indefi nite time.
Charger and battery
pack connected
10
2
Activating the Regulator
Remove the tamper-resistant cover.
Start the pump using the On/Off
switch (Figure 1, #8). Press Start/
Hold (Figure 1, #3). Press Flow and
Battery Check (Figure 1, #2). Adjust
the fl ow using the fl ow adjustment
screw (Figure 1, #11) until the builtin rotameter reads 1.5 L/min. The
LCD should indicate BATT OK in
the upper left corner (if it doesn’t,
recharge the battery). Press Flow
and Battery Check to place the pump
in Hold.
Remove the cap screw covering the regulator valve
(Figure 1, #18) and turn the exposed screw four to fi ve
turns counterclockwise.
Replace the cap screw. The pump is now set for low fl ow.
For low fl ow,
turn valve screw
counterclockwise.
11
Setting or Verifying Flow Rate
For a diagram of the pump, see Figure 1, page 5.
1 Flow adjust screw
2 Rubber sleeve
Airfl ow
Before use, allow pump to equilibrate after moving it from one temperature
extreme to another.
Ensure pump has run for fi ve minutes
before proceeding with calibration.
Connect a single adjustable low fl ow
holder (Figure 2) to the pump intake
(Figure 1, #13) using 1/4-inch Tygon
tubing.
Insert an opened sorbent tube (Figure 2, #3) into the rubber
sleeve (Figure 2, #2) of the low fl ow holder with the arrow on the
tube pointing toward the holder.
3 Sorbent tube
Figure 2
Single Adjustable
Low Flow Holder
with sample tube
Calibration train with tube
in low fl ow holder
3
Connect a calibrator to the exposed end
of the sorbent tube.
Loosen the brass fl ow adjust screw on
the low fl ow holder. Activate the pump by
pressing Flow and Battery Check.
Adjust the fl ow rate by turning the fl ow adjust
screw (Figure 2, #1) on the holder until the
calibrator indicates the desired fl ow.
Do not adjust the fl ow on the pump. Adjust the fl ow only by using the
fl ow adjust screw on the low fl ow holder.
continued on page 13
12
Turn screw on
low fl ow holder to
Flow adjust
adjust fl ow.
screw
3
(cont’d)
4
When the desired fl ow is set, place the pump in Hold by pressing
Flow and Battery Check. Disconnect the calibrator. Replace
the sorbent tube used for setting the fl ow with a new unexposed
sorbent tube for sample collection.
Place the appropriate size tube cover over the tube, and screw it
into place on the low fl ow holder.
Programming Delayed and Intermittent
Sampling
To enter Delayed Start Mode: From
Hold, press Set-up. Enter the number
of minutes delay (up to 9999) before
the sampling period begins by pressing
Digit Select and Digit Set. Digit Select
advances the fl ashing digit and Digit Set
increases the value of the fl ashing digit.
To enter Sample Period Mode: Press
Mode. Press Digit Select and Digit Set to
enter the sampling time period in minutes
(up to 9999). Note: The sample period
is the total period in which sampling is
performed and not the pump run time.
To enter Pump Period Mode: Press
Mode. This is the actual running time of
the pump. Use Digit Select and Digit Set
to enter the pump run time in minutes (up
to 9999).
PCXR8 Keypad
Intermittent Sampling Options:
Option 1 - Sample Period and Pump Period Both > 10 Minutes
Ensure the Sample Period and Pump Period are set to be greater
than 10 minutes. Set the Pump Period for less time than the
Sample Period to initiate intermittent sampling. The pump will
automatically calculate pump “off” time and run 10 equal cycles
of “on” and “off” over the sampling period beginning with the
fi rst “on” time. Delayed start may be used with this option.
Option 2 - Sample Period and Pump Period Both < 10 Minutes
Ensure the Sample Period and Pump Period are set to be less than
10 minutes. The minimum “on” or “off” time setting is one minute.
continued on page 14
13
Set the Pump Period for less time than the Sample Period to initiate
intermittent sampling. The pump will automatically cycle “on” and
“off” at one-minute intervals adjusting the fi nal “on” or “off” time
to as many minutes as needed to reach the total programmed time.
4
(cont’d)
5
If intermittent sampling is not desired, set the Sample Period to
equal the Pump Period.
Pressing Mode will scroll through the program sequence.
For intermittent sampling, the elapsed time maximum is 9999 minutes
(6.8 days), at which time the sample pump will shut down.
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.
For personal sampling, clip the low fl ow
holder to the worker in the breathing zone.
While the LCD displays HOLD, start
sampling by pressing Start/Hold. If a time delay has been
programmed, DELAYED START will fl ash on the LCD and
the amount of time remaining until sampling starts will appear.
SAMPLE RUNNING will display when the delay sequence has
ended. The LCD will automatically track sampling period time
elapsed.
Clip holder to worker
and pump to belt.
At the end of the sampling period, press Start/Hold and record
the stop time.
To return to high fl ow, remove the low fl ow holder and
deactivate the regulator (see page 6).
For user options during sampling, see page 9.
14
Low Flow Applications (5 to 500 ml/min)
Using Multiple-tube Adjustable Low Flow Holder
2
2
Top view of fl ow
adjust screws
1
1 Anti-tamper cover
2 Flow adjust screws
1
3
4 Sorbent sample tube
3 Rubber sleeve
4
5
5 Protective cover
Figure 3
Quad Adjustable Low Flow Holder
Setup
For a diagram of the pump, see Figure 1, page 5.
Install battery (see Installing the Battery Pack on page 21). For optimum charge, ensure pump is not running.
connecting the charger plug to the sampler charging jack (Figure
1, #22). Ensure that the battery is fully charged before sampling.
After charging the battery pack, it is good practice to run the pump for
approximately fi ve minutes before calibrating. This ensures the battery is in
more steady-state conditions and improves the agreement in pre and postsampling calibrations.
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.
Ensure proper orientation of charge cable
before plugging it into the charging jack.
Improper orientation/contact will shortcircuit 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.
The battery pack may be kept on the SKCapproved charger for an indefi nite time.
Charge the battery by
Charger and battery
pack connected
15
2
Setting or Verifying Flow Rate
When performing multiple-tube sampling using an adjustable low fl ow
holder (dual, tri, or quad), ensure the regulator has been activated and the
pump fl ow rate is set at 1.5 L/min. The maximum fl ow rate through any one
tube is 500 ml/min*. Calculate the sum of all tube fl ow rates. If the sum is
≤ 1000 ml/min, proceed with calibration and sampling without any further
adjustment to pump fl ow rate. If the sum is > 1000 ml/min, set the pump
fl ow rate 15% higher than the sum of tube fl ow rates.
* Back pressure across some sample tubes can be higher than average. In these instances,
the maximum fl ow rate of 500 ml/min per tube may not be achieved.
Before use, allow pump to equilibrate after moving it from one temperature
extreme to another.
Ensure pump has run for fi ve minutes before proceeding with
calibration.
Ensure the pump is set for low fl ow (see Activating the Regulator,
page 11).
Connect the adjustable low fl ow holder (Figure 3, page 15) to the
pump intake (Figure 1, #13) using 1/4-inch Tygon tubing.
Insert an opened sorbent tube into each rubber sleeve of the
low fl ow holder (Figure 3, #3 and 4) with the arrow on the tube
pointing toward the holder.
If sampling with fewer tubes than number of ports, insert unopened
sorbent tubes in the empty ports to seal them.
Connect holder to
pump intake and tube
inlet to calibrator.
Note the fl ow rates specifi ed by each sampling method and add
them together. If the sum is ≤ 1000 ml/min, proceed to the next
step. If the sum is > 1000 ml/min, multiply the total tube fl ow rate
by 1.15 and set the pump for that fl ow rate.
Connect a calibrator to the exposed end of a sorbent tube, loosen
the brass fl ow adjust screw on the low fl ow holder, and activate
the pump by pressing Flow and Battery Check.
continued on page 17
16
Turn the fl ow adjust screw (Figure 3, #2) for the appropriate port
of the low fl ow holder until the desired fl ow rate is achieved.
Turn clockwise to decrease the fl ow.
Do not adjust the fl ow on the pump. Adjust the fl ow only by
using the fl ow adjust screw on the low fl ow holder.
Do not exceed 500 ml/min fl ow rate per tube.
2
(cont’d)
When the desired fl ow is set on the
initial tube, place the pump in Hold
by pressing Flow and Battery Check.
Remove the calibrator from the tube
and connect to the exposed end of
the next sorbent tube. Press Flow and
Battery Check and repeat the fl ow
adjustment process until all tubes are
fl ow calibrated. Changing the fl ow on
one tube will not affect the fl ow rate through the remaining tubes.
Do not exceed 500 ml/min fl ow rate per tube.
For tri and quad models, fi rst rotate each anti-tamper cover
(Figures 3 and 4) to expose the fl ow adjust screws, then
adjust the appropriate screw until the calibrator indicates the
desired fl ow.
When the fl ow rate is set for each tube, press Flow and Battery
Check to place the pump in Hold and disconnect the calibrator.
Replace the sampling media used for calibration with unexposed
media for sample collection. Use a protective tube cover to
prevent tube breakage.
Screw
Figure 4
Cut-away of Tri/Quad Low
Flow Holder
Screw
If sampling with fewer tubes than number of ports, insert unopened
sorbent tubes in the empty ports to seal them.
17
3
Programming Delayed and Intermittent
Sampling
To enter Delayed Start Mode: From Hold, press Set-up. Enter
the number of minutes delay (up to 9999) before the sampling
period begins by pressing Digit Select and Digit Set. Digit
Select advances the fl ashing digit
and Digit Set increases the value
of the fl ashing digit.
To enter Sample Period Mode:
Press Mode. Press Digit Select
and Digit Set to enter the sampling
time period in minutes (up to
9999). Note: The sample period is
the total period in which sampling
is performed and not the pump run
time.
To enter Pump Period Mode:
Press Mode. This is the actual
running time of the pump. Use
Digit Select and Digit Set to enter
the pump run time in minutes (up
to 9999).
Intermittent Sampling Options:
Option 1 - Sample Period and
Pump Period Both > 10 Minutes
Ensure the Sample Period and
Pump Period are set to be greater
than 10 minutes. Set the Pump
Period for less time than the Sample Period to initiate intermittent sampling. The pump will automatically calculate pump “off”
time and run 10 equal cycles of “on” and “off” over the sampling
period beginning with the fi rst “on” time. Delayed start may be
used with this option.
Option 2 - Sample Period and Pump Period Both < 10 Minutes
Ensure the Sample Period and Pump Period are set to be less than
10 minutes. The minimum “on” or “off” time setting is one minute.
Set the Pump Period for less time than the Sample Period to initiate
intermittent sampling. The pump will automatically cycle “on” and
continued on page 19
18
PCXR8 Keypad
3
(cont’d)
“off” at one-minute intervals adjusting the fi nal “on” or “off” time
to as many minutes as needed to reach the total programmed time.
If intermittent sampling is not desired, set the Sample Period to
equal the Pump Period.
Pressing Mode will scroll through the program sequence.
For intermittent sampling, the elapsed time maximum is 9999 minutes
(6.8 days), at which time the sample pump will shut down.
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.
For personal sampling, clip the low fl ow
holder to the worker in the breathing
zone.
4
While the LCD displays HOLD, start
sampling by pressing Start/Hold. If a
time delay has been programmed, DELAYED START will fl ash on the LCD
and the amount of time remaining until sampling starts will appear. SAMPLE RUNNING will display when the delay sequence
has ended. The LCD will automatically track sampling period
time elapsed.
At the end of the sampling period, press Start/Hold and record
the stop time.
To return to high fl ow, remove the low fl ow holder and
de-activate the regulator (see page 6).
For user options during sampling, see page 9.
19
Clip holder to worker and
pump to belt.
Maintenance
Pump Inlet Filter
The PCXR8 Sampler is fi tted with a fi lter/trap inside a clear plastic
intake port housing. This prevents particles from being drawn into the
pump mechanism. The fi lter should be visually checked to assure that
it does not become clogged. If maintenance is necessary, follow this
procedure:
1. Clean dust and debris from around the fi lter
housing.
2. Remove the four screws and the front fi lter
housing.
3. Remove and discard the fi lter membrane.
4. Remove O-ring.
5. Clean the fi lter housing.
6. Insert O-ring
*
and a new filter membrane.
Close-up of inlet
fi lter housing
(See Replacement Parts, pages 26-27.)
7. Reattach the front fi lter housing and cross-tighten the four screws.
* Replace with new O-ring only as needed.
Battery Pack Care
For proper maintenance of battery packs, SKC offers chargers (see Optional
Accessories, page 28) that condition the battery for optimum performance
in 6 to 8.5 hours. For optimum charge, ensure pump is not running during
charging. Follow charger instructions.
Fully charge battery packs before use. For information on SKC pump batteries, visit www.skcinc.com/instructions/1756.pdf.
To comply with intrinsic safety regulations, do not charge or operate the pump
from the charger in hazardous locations.
Using a non-approved charger voids any warranty.
Use of a repaired or rebuilt battery pack voids any warranty and the
UL Listing for intrinsic safety.
Use of any device other than the approved battery pack to power the pump voids
the UL Listing for intrinsic safety and any warranty.
Ensure proper orientation of charge 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.
Intake
O-ring
Filter
membrane
Screw (4)
The battery pack may be kept on the SKC-approved charger for an indefi nite time.
20
Installing the Battery Pack
To enhance battery life, SKC ships battery packs separate from the pump.
Once installed, completely charge battery pack before operating pump.
1. Loosen the two case screws above and below the belt clip.
2. Slip the front edge of the battery pack under the belt clip and
position battery pack to engage the grooves in the case.
3. Slide battery pack toward the pump until it is fl ush with the
pump case on all sides.
4. Install two battery screws and tighten the case screws loosened
in Step 1.
5. Charge battery completely. For optimum charge, ensure pump
is not running during charging.
Replacing the Battery Pack
To enhance battery life, SKC ships battery packs separate from the pump.
Once installed, completely charge battery pack before operating pump.
For information on SKC pump batteries, visit www.skcinc.com/
instructions/1756.pdf.
1. Remove the two screws that secure the battery pack and
loosen the two case screws above and below the belt clip.
2. Carefully slide battery pack out from under the belt clip. Ensure that the battery is kept level.
3. Slip the front edge of the new battery pack under the belt clip
and position battery pack to engage the grooves in the case.
4. Slide the battery pack toward the pump until it is fl ush with the
pump case on all sides.
5. Reinstall battery screws and tighten the case screws.
Case screw
(not shown)
Ba ery pack screws
Beltclip
pack sliding out
Case screw
Ba ery connector
Important Cautions/Warnings on next page
Case grooves
21
Back of pump
with battery
Use of a repaired or rebuilt battery pack voids any warranty and the UL
Listing for intrinsic safety.
Do not charge or operate the pump from the charger in hazardous locations!
Use only an SKC-approved charger and battery pack designed for the Universal Sample Pump to ensure reliable performance. Failure to do so voids
any warranty and UL Listing for intrinsic safety.
Use of any device other than the approved battery pack to power the pump
voids the UL Listing for intrinsic safety and any warranty.
Pump Service
Pumps under warranty should be sent to SKC Inc. for servicing.
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 complete SKC Limited Warranty
and Return Policy, go to http://www.skcinc.com/warranty.asp.
22
This page is intentionally blank.
23
Parts Descriptions
Use only SKC-approved parts to ensure reliable performance. Failure to do so
voids any warranty and UL Listing for intrinsic safety.
See page 25 for drawing.
No. Description
1 LCD indicates all sampler functions.
2
FLOW AND BATTERY CHECK Key allows fl ow rate setting and battery condition testing.
3 START/HOLD Key is used to start the sampling cycle, pause the sampling cycle, and
restart the cycle after pause.
4 MODE Key is used during set-up, navigates between delayed start, pump run time, and
total elapsed time.
5 SET-UP Key is used to enter setup mode to set delayed start, pump run time, and total
elapsed time.
6 DIGIT SET/PUMP RUN TIME Key sets the fl ashing digit to the desired value or permits
viewing of actual pump run time during sampling cycle.
7 DIGIT SELECT/TOTAL ELAPSED TIME Key selects the time digit to be set in setup
mode or permits viewing of total elapsed time during the sampling cycle.
8 ON/OFF Switch shuts down the pump completely and clears time display.
9 Tamper-resistant Cover protects controls from incidental contact or tampering.
10 Cover Screw fastens tamper-resistant cover.
11 FLOW ADJUSTMENT Control adjusts fl ow from 1000 to 5000 ml/min.
12
Accessory Mounting Screws (2) secure accessories such as impinger and trap holders.
13 Intake/Filter Housing, air intake port and trap
14 Filter Housing Screws (4) secure fi lter housing.
15 Filter O-ring - leak seal for fi lter in housing
16 Filter (crimped fi ber polyester) prevents particles from entering pump.
17 Built-in Flowmeter monitors fl ow changes.
18 Cap Screw accesses regulator.
19 Cap Screw accesses air discharge port.
20 Battery Pack Screws (2) secure pack to pump.
21 Battery Pack Assembly provides power to pump.
22 Charging Jack, connector for battery charger
23 Belt Clip secures pump to worker.
A Compensation Pot A adjusts pump compensation which is factory set. Access screw
guards against accidental contact or tampering.
B Compensation Pot B adjusts pump compensation which is factory set. Access screw
guards against accidental contact or tampering.
24
224-PCXR8 Sample Pump
13
14
15
AIRCHEK
SAMPLER
5
4
3
2
1
SAMPLE PERIOD Ñ MINUTES
START
HOLD
FLOW
AND
BATTERY
CHECK
DIGIT
SET
PUMP
RUN
TIME
DIGIT
SELECT
TOTAL
ELAPSED
TIME
SET-UP MODE
FLOW
ADJ
ON
AIRCHEK SAMPLER
MODEL 224-PCXR8
LISTED 124U
8
11
10
7
B
6
5
4
3
2
1
A
17
20
22
23
20
21
18
BACK
TOP
FRONT
12
16
13
9
19
See page 24 for parts listing.
25
Replacement Parts
See drawings on page 27.
Pump Case Parts
P21411 Case Parts (Excluding Battery Case)
P21661MH Battery Pack Assembly, NiMH
P21661 Battery Pack Assembly, NiCad
P22417BC Belt Clip with screws
P22433P Keyboard Assembly
P22433R Cap Screws (set of 2)
P22433U Control Board
P22433RS2 Replacement Stack (with pressure switch) - does not include fl owmeter
and fi lter housing assemblies or motor
P22417C Exhaust Port Fitting
Pump Stack Parts
P22417D Filter Housing Assembly
P22417E Pressure Switch Assembly
P22417F Valve Plate Assembly
P22417G Pump Body
P22417HC Diaphragm/Yoke Assembly
P22417J Regulator Assembly
P22417K Pulsation Dampener Assembly (2)
P22433L Flowmeter Assembly
Parts not indicated in illustration
P22417M Motor/Eccentric Assembly
P22433C Tamper-resistant Cover
P22433ES External Screws
P72392 LCD
P5187 Foam cover for control board, pk/5
Replacement Filters
P22409 Filter/O-ring, pk/3
P2240901 Filters, pk/10
P2240902 Filter/O-ring (100 fi lters/10 O-rings)
26
P22417C
See page 26 for replacement parts listing.
P22433P
P22433R
P22433RS2
(
does not
include
fl owmeter
and fi lter
housing
assemblies
or motor
)
P22433L
P21411
Pump Case Parts
P22433U
P21661MH or
P21661
P22417BC
P22417J
P22417K
P22417D
P22433RS2
(
does not
include
fl owmeter
and fi lter
housing
assemblies
or motor
)
P22417F
P22417E
Pump Stack (Part #P22433RS2) Exploded
27
P22417G
P22417HC
Optional Accessories
Calibrator Cat. No.
Defender Primary Standard Calibrator, 50 to
5000 ml/min, includes lead-acid battery, charger
(100-240 V), software, and 1-m serial cable 717-510M
Adjustable Low Flow Holders
Single Holder 224-26-01
Dual Holder 224-26-02
Tri Holder 224-26-03
Quad Holder 224-26-04
Protective Sample Tube Covers
A, 70 mm, standard charcoal 224-29A
B, 110 mm, large charcoal 224-29B
C, 150 mm 224-29C
D, 220 mm 224-29D
Battery Maintenance
PowerFlex Charging System for SKC Personal Pumps
5-station, 100-240 V 223-1000
Single, 100-240 V 223-2000
PowerFlex Cable,
for Universal XR models 223-1002
Replacement Battery Pack, NiMH P21661MH
Replacement Battery Pack, NiCad P21661
Battery Eliminator,* connects pump to
line power for extended sampling 115 V 223-325
230 V 223-325B
Pump Accessories
Screwdriver Set, included with pump 224-11
Protective Nylon Pouch, with belt and
shoulder strap
Black 224-87
Red 224-95A
* Not UL Listed for intrinsic safety
28
Protective
Nylon Pouch
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