Operating Instructions Universal Sample Pump Cat. No. 224-PCXR4 SKC Inc.
Table of Contents Description ........................................................................ 1 Performance Profile ............................................................................................2 Operation........................................................................... 5 High Flow Applications .......................................................................................5 Low Flow Single-tube Applications ...........................................................
Description The PCXR4 Universal Sample Pump is a constant flow 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 Screw (beneath cap screw) allows pump to be switched from high to low flow.
Performance Profile Flow Range: 1000 to 5000 ml/min (UL Listed model) (5 to 500 ml/min requires adjustable low flow holder) Weight: 34 oz (964 gm) Dimensions: 5.1 x 4.7 x 1.9 in (13 x 11.9 x 4.
RFI/EMI Shielding: Complies with requirements of EN 55022, FCC Part 15 Class B, EN 50082-1; frequency range of the radiated susceptibility test was 27 to 1000 MHz. Flow Fault: If the pump is unable to compensate for longer than 15 seconds due to excessive back pressure, the pump enters flow fault. During flow fault, the pump stops, displays FLOW FAULT, pauses timing functions, and displays elapsed time. Auto-restart is attempted up to 5 times.
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) filter, 0.8-μm pore size Flow Rate (L/min) 2.0 2.5 3.0 3.5 4.0 4.5 37 mm 24.1 21.4 19.1 17.8 15.4 14.6 Filter Diameter 25 mm 16.3 14.5 11.0 10.
Operation High Flow Applications (1000 to 5000 ml/min) 8 1 LCD 9 AIRCHEK SAMPLER 1 2 3 LISTED 124U 5 SAMPLE PERIOD Ñ MINUTES START HOLD 3 Start/Hold Key 4 FLOW AND BATTERY CHECK 3 4 On/Off Switch 2 AIRCHEK SAMPLER MODEL 224-PCXR4 1 4 5 Tamper-resistant Cover ON FLOW ADJ 5 2 Flow and Battery Check Key 7 Flow Adjustment Screw 8 Accessory Mounting Screws (2) 7 FRONT 9 Intake/Filter Housing 14 16 14 Cap Screw to Regulator TOP 15 9 15 Cap Screw to Air Discharge Port 16 Battery Pack S
De-activating the Regulator 2 To ensure the pump is set for high flow, remove the cap screw (Figure 1, #14) covering the regulator valve and turn the exposed screw clockwise until it stops. (Do not overtighten.) Replace the cap screw. The pump is now set for high flow. For high flow, turn valve screw clockwise. Setting or Verifying Flow Rate Before use, allow pump to equilibrate after moving it from one temperature extreme to another.
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 media to the worker in the breathing zone. 4 Clip sample medium to worker and pump to belt. While the LCD displays HOLD, start sampling by pressing Start/ Hold.
4 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, #8) 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.
Low Flow Applications (5 to 500 ml/min) Using Single Adjustable Low Flow Holder 1 LCD 8 9 AIRCHEK SAMPLER 1 2 3 LISTED 124U SAMPLE PERIOD Ñ MINUTES START HOLD 5 3 Start/Hold Key 4 FLOW AND BATTERY CHECK 3 AIRCHEK SAMPLER MODEL 224-PCXR4 2 4 On/Off Switch 1 4 2 Flow and Battery Check Key 5 Tamper-resistant Cover ON FLOW ADJ 7 Flow Adjustment Screw 5 7 8 Accessory Mounting Screws (2) FRONT 14 16 9 Intake/Filter Housing 14 Cap Screw to Regulator TOP 15 16 Battery Pack Screws (2) 18
Activating the Regulator 2 Remove the tamper-resistant cover. Start the pump using the on/off switch (Figure 2, #4). Press Start/Hold (Figure 2, #3). Press Flow and Battery Check (Figure 2, #2). Adjust flow using the flow adjustment screw (Figure 2, #7) until the built-in 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. For low flow, turn valve screw counterclockwise.
Setting or Verifying Flow Rate For a diagram of the pump, see Figure 1, page 5. 1 Flow adjust screw 2 Rubber sleeve 3 Sorbent tube Figure 3 Single Adjustable Low Flow Holder with sample tube Airflow Before use, allow pump to equilibrate after moving it from one temperature extreme to another. 3 Ensure pump has run for five minutes before proceeding with calibration. Connect a single adjustable low flow holder (Figure 3) to the pump intake (Figure 2, #9) using 1/4-inch Tygon tubing.
3 cont’d Replace the sorbent tube used for setting the flow 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 flow holder. 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.
Low Flow Applications (5 to 500 ml/min) Using Multiple-tube Adjustable Low Flow Holder Top view of flow adjust screws 1 Anti-tamper Cover 2 Flow Adjust Screws 3 Rubber Sleeve 4 Sorbent Sample Tube 5 Protective Cover Figure 4 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 18). For optimum charge, ensure pump is not running.
Setting or Verifying Flow Rate When performing multiple-tube sampling using an adjustable low flow holder (dual, tri, or quad), ensure the regulator has been activated and the pump flow rate is set at 1.5 L/min. The maximum flow rate through any one tube is 500 ml/min*. Calculate the sum of all tube flow rates. If the sum is ≤1000 ml/min, proceed with calibration and sampling without any further adjustment to the pump flow rate.
Turn the flow adjust screw (Figure 4, #2) for the appropriate port of the low flow holder until the desired flow rate is achieved through the tube. Turn clockwise to decrease the flow. Do not adjust the flow on the pump. Adjust the flow only by using the flow adjust screw on the low flow holder. Do not exceed 500 ml/min flow rate per tube. 2 cont’d When the desired flow is set on the initial tube, place pump in Hold by pressing Flow and Battery Check.
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. 3 For personal sampling, clip the low flow holder to the worker in the breathing zone. While the LCD displays HOLD, start sampling by pressing Start/Hold. SAMPLE RUNNING will display. Record the start time.
Maintenance Pump Inlet Filter The PCXR4 Sampler is fitted with a filter/trap inside a clear plastic intake port housing. This prevents particles from being drawn into the pump mechanism. The filter 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 filter housing. 2. Remove the four screws and the front filter housing. 3. Remove and discard the filter membrane. 4. Remove O-ring. 5.
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 flush with the pump case on all sides. 4.
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.
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 21 for drawing. No. Description 1 LCD indicates all sampler functions. 2 FLOW AND BATTERY CHECK Key allows flow 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 ON/OFF Switch shuts down the pump completely and clears time display.
224-PCXR4 Sample Pump See page 20 for parts listing.
Replacement Parts See drawings on page 23.
See page 22 for replacement parts listing.
Optional Accessories Calibrator Cat. No.
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.
