Gilian Lfs-113 User manual

LFS-113

Dual Mode Low Flow Air Sampler

1–350 cc/min. Constant Pressure

5–200 cc/min. Constant Flow

LOW FLOW SAMPLER

Patent Pending

MODEL LFS-113DC

TIME (MIN)

FLOW ADJ

DUAL

MODE

S/N–

PN 800098–

OFF

Made in USA

LISTED 17G9

MODEL LFS-113D / LFS-113DC

Personal Air Sampler

Intrinsically Safe Portable Air Sampling Pump for use in

Hazardous locations: Class I Groups A,B,C,D; Class II

Groups E,F,G; Class III. Temperature Code T3.

WARNING

Substitution of components may impair Intrinsic Safety.

Use only with UL Listed Portable Air Sampling Pump

Battery Pack.

INSTRUCTION MANUAL

Document No. F-PRO-1725, Rev A

Sensidyne, Inc.

16333 Bay Vista Drive • Clearwater, FL 33760

800-451-9444 • 727-530-3602

FAX 727-539-0550

NOTE: Please read all warnings and instructions before operating this unit. Failure to follow these

instructions and procedures can result in permanent damage to the equipment.

WARNING:

ThisunitisdesignedspecificallyforusewithGilianLFS-113,UL,and SCS intrinsicallysafebattery

packsandequipment.Theunitshouldonlybeoperatedin environmentsthattheunit'sintrinsicsafety

labeling permits. Do not operate in excessive chemical or water vapor atmospheres. Do not charge

sampler outdoors or in a damp environment. Use specified Gilian chargers only when recharging the

battery system. Use of any other charger may short out the battery or cause permanent damage to the

electrical system. Do not leave unit charging for more than 16 hours. Overcharging cells may cause

overheating and subsequent damage to/or decrease in battery life and performance.

Sensidyne, Inc.

16333 Bay Vista Drive • Clearwater, FL 33760

800-451-9444 • 727-530-3602

FAX 727-539-0550

6.0 SPECIFICATIONS

Operating Range: Constant flow mode: 5-200 cc/min., back pressures to 25" H2O

Constant pressure mode: (multi-tube) 1-350 cc/min. with flows adjustable through a

single or multiple tube flow controller.

Pressure Range: backpressure up to 25" H2O

Flow Control: ±5% of set point

BatterySystem:Rechargeable,plugin,4.8V,500mAhNi-cadbatterypack.Designed

to meet all UL requirements. Internal charging, (external charging with adapter).

Size: 2-1/2" W x 1-3/8" H x 4-5/8" L

Weight: 12 ounces

Temperature: Operating: -20°to 45 c°, Storage: -40°to 45 c°, Charging: 5°to 45 c°

Additional features: Flow fault indication LED, battery check LED, belt clip, dual

filtration system, sorbent tube end breaker, external flow adjust.

Options: Elapsed timer clock module: (offered on DC models), LCD display and

automatic instant-fault shut-down function, RFI shielding case.

Warranty:TheLFS-113dualmodelowflowsamplerisguaranteedforoneyearagainst

any defects in parts and/or workmanship.

page 19

Operating manual for the

LFS-113 Air Sampling System

Includes models:

LFS-113D, LFS-113DC

Table of Contents

Sec. Title Page

WARRANTY/SERVICE INFORMATION 2

Fig. 1 - Flow/Timing Capabilities/Approvals 4

1.0 INTRODUCTION 5-8

1.1 Theory of Operation 5

1.2 General Description, nomenclature6

Fig. 2 - Sampler front, side & top 7

Fig. 3 - Sampler back & side 8

2.0 SET-UP 9

2.1 Charging 9

2.2 Filter Check 9

3.0 OPERATION 9-12

3.1 Mode Selection 9-10

3.2 Constant Flow Sampling 10-11

3.3 Multiple Flow Sampling 11-12

4.0 PERFORMANCE CHECKS 12-13

4.1 Constant Flow Check 12

4.1.1 Pressure Fault Check 12

4.1.2 Pressure Fault Clear Check 12-13

4.1.3 Battery Performance Check 13

4.2 Constant Pressure 13

4.2.1 Constant Pressure Check 13

5.0 MAINTENANCE 13-14

5.1 Battery Charging and Storage 13-14

5.2 Replacing the Battery 14

5.3 Changing the Pump Filter 14

Fig. 4 - Constant flow mode set-up 15

Fig. 5 - Multi-flow mode set-up 16

Fig. 6 - Pump test set-up 17

6.0 SPECIFICATIONS 18

Figure 7

LFS-113 Sampler

page 18

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Figure 1

Flow/Timing Capabilities/Approvals

page 4

INTRINSICSAFETYAPPROVALS

See product labeling for specific intrinsic safety approvals.

UL ®(Underwriters Laboratories, Inc.)

All LFS-113 series pumps are UL approved intrinsically safe for use in hazard-

ous locations Class I, Groups A, B, C, & D, Class II, Groups E, F, & G and Class

III.

UL listed 17G9, Temperature Code T3C.

MSHA ®(Mine Safety and Health Administration)

The designs of this air sampling pump meets the requirements of title 30 code

of Federal Regulations Part 18 and are hereby approved as permissible for use

in gassy mines, when used with a specified Gilian Battery pack

SCS ®(SIRA Certification Service), Europe

Certificate No. Ex90C2011X, Coding: EEx iB IIC T4

ISO 9002 Quality Assurance Standard, International

All Gilian products are designed, manufactured and produced in accordance

with and comply with the ISO 9002 international quality assurance standard.

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page 17

Figure 6

Pump calibration/diagnostics set-up

page 5

1.0 INTRODUCTION

The LFS-113 series sampler provides a rugged, reliable and compact sampling

system for industrial hygiene and environmental sampling employment of single or

multiple sorbent tubes and gas sampling bags. Two low flow modes of sampling

allowconstant flows from 5-200 cc/min., as well as constant pressure for multiple

sorbent tube sampling from 1-350 cc/min. (combined flow rates). A compact and

lightweight sampler, the LFS combines convenience and useful functions for accurate

sampling.

1.1 Theory of Operation

TheLFSlow flow samplerofferstwomodesofsampling whichareeasilyactivated

by turning the selector dial located at the back of the sampler. A hex wrench is inserted

and turned to the desired position and a visual indicator displays the mode being used.

The sampler is turned on and will run continuously until manually shut down. An

optional LCD clock is available on DC models which offers elapsed run time and an

instant-fault function.The constant pressure (multi-flow) mode when used with a

multiple flow controller tube holder, offers a multi-tube sampling capability that is

adjusted individually at each tube position.

page 16

Figure 5

"Constant-pressure" mode

for multi-tube sampling

page 6

1.2 General Description (see figures 2 and 3)

Item Nomenclature Description

1 Charging Jack Receptacle provides means of connecting charger for recharging

internal battery pack.

2 Pump Filter 10 Micron Nylon filter protects pump assembly from dirt. Discolora-

tion indicates need for filter replacement.

3 Mode Indicator Visually confirms mode engagement via Black or White indication.

4 Mode Select Provides means of unlocking, indexing and re-locking mode selector

valve to change from constant low flow to the multiple low flow mode.

5 On/Off Switch Activates sampler operation.

6 Battery Check Green LED indicates sufficient battery power to run the pump for an 8-

hour period under normal load conditions.

7 Fault Indicator Indicates flow fault due to excessive pressure or insufficient battery

voltage to maintain flow.

8 Clock Display Indicates continuous run-time in minutes which will lock in the sample

(DC models only.) time upon fault indication. Time will reset to zero when the power

switch is turned OFF and back ON.

9 Flow Adjust Provides external means of adjusting the air flow rate.

10 Inlet Boss Air inlet is located on the clear filter housing and provides built-in

means of attaching tubing for suction sampling.

11 Outlet Port Receptacle for discharge air boss accessory. The cap screw prevents

dirt from entering the dischargeoutlet when not in use.

12 Discharge Boss An accessory which when installed into the discharge outlet, provides a

means of filling air sampling bags.

13 Belt Clip Built-in means of attaching sampler to worker’s belt.

14 Case Screws (4) Holds battery pack in place as well as case front and back.

15 Battery Pack Provides DC power to operate the unit.

page 15

Figure 4

"Constant-flow" mode set-up

page 7

1. Charging Jack

2. Inlet Filter Assy.

5. On/Off Switch

6. Battery Check Indicator

7. Fault Indicator

8 Clock Display

9. Flow Control Valve

10. Inlet Boss

11. Outlet Port/Cap

13. Belt Clip

Figure 2

LFS-113 Air Sampler

General Description, front, side & top

page 14

scheduled to be used for long periods of time, (more than 2 months), it is recommended that the

following procedure be followed on a periodic basis.

a) Run pumps until they shut down on low battery.

b) Recharge the battery overnight (16) hours and return the pumps into storage.

5.2 Replacing the Battery: (refer to figure 7)

Place the sampler face down on a soft, level surface. Remove the four corner case screws.

Supporting the pump by the front half, turn the sampler face up. Remove the top half to reveal

the internal mechanism.Disengage the Battery Connector from the receptacle located on the

Control Board (13 or 14). Lift the battery pack (9) from the base of the case. To install a new

battery, reverse this procedure. NOTE:The connector is polarized and can only be properly

installed in one direction.

5.3 Changing the Pump Filter: (refer to figures 2 and 7)

Under normal operating conditions, the pump filter should be changed after approximately

250 hours of operation or when needed. Failure to change the filter as it becomes dirty will

decrease the pump's back pressure capability and performance envelope.

Blow all dust and debris from around the Filter Housing (2). Grasp the knurled edge of the

filterhousing assemblyand rotatecounter-clockwise. Check the new filter housingassembly to

makesure thatthe sealing"O" ringispresent onthe internalboss. Install thenew FilterHousing

Assembly onto the pump rotating the knurled edge clockwise. Do Not Overtighten! Check the

filter’s performance by using the Constant Pressure Check,

(see Section 4.2.1).

Figure 3

LFS-113 Air Sampler

General Description, back & side

page 8

3. Mode Position Indicator

4. Mode Selector Switch

12. Bag Sampling Boss

14. Case Screws (4)

15. Battery Pack

page 13

4.1.3 Battery Performance Check:

Allow the unit to run down until the pump shuts off. Monitor the flow periodically, either

visually or by means of an electronic flow recorder with chart readout.The flow should not

change by more than 5% prior to fault activation and automatic pump shutdown due to low

battery voltage.

As an alternate means of checking the pump low battery performance, remove the battery

packfromthebatteryconnectionreceptacleofthecontrolboardelectronics.Provideanexternal

DC voltage supply to the Control Board battery receptacle. Slowly decrease the voltage from

4.8 volts to 4.4 volts. The flow should not change by more than 5% prior to fault activation and

automatic pump shutdown due to low battery.

4.2 Constant Pressure:

4.2.1 Constant Pressure Check:

Switch the sampler into the "Constant-pressure" mode,( see Section 3.1 for complete

indexing procedure). Attach the pump into the test set-up as shown in figure 6. If you are using

theGilianLIHCPcalibrator:closetheshutoffvalve(V1). CloseLoadValve(V2). Observethe

pressure on the magnehelic gauge (P1). That pressure should be 18" H 2O, ±2%". Slowly open

the Load Valve (V2) until the flow is approximately 400 cc/min. The pressure on Magnehelic

gauge (P1) should change by no more than 2 inches.(If a greater pressure change is indicated,

itis possiblethat thesampler's externalfilter assemblyis contaminatedand needsreplacement.)

5.0 PUMP MAINTENANCE (see figures 1 & 5)

Your LFS sampler has been designed to require minimum maintenance. However, the

following sections cover the basic procedures to maintain trouble free operation and optimum

performance.

5.1 Battery Charging and Storage Maintenance:

A proper battery maintenance program is essential to insure maximum battery life and

performance. Specific charging and discharging procedures will vary with the users needs and/

or applications.The following is a list of general recommendations which will help to extend

efficient battery life and serviceability.

1. Do not short the battery connectors. This may result in severe damage to the battery pack.

2.Do not overcharge the battery pack.You should not charge battery packs at the "Normal"

(constant current) rate for more than 24 hours.Repeated overcharging will eventually lead to

deterioration in the performance level of the battery pack.If you must have batteries charging

formorethan24hours,werecommendthatyouswitchthechargerinto"Trickle"(pulsecurrent)

mode. This feature is available on all Gilian DRC and ATR version chargers.

3.The long term storage of pumps will require some special handling.If pumps are not

page 9

2.0 OPERATION SET-UP

2.1 Charging the LFS-113: (refer to figures 2 and 3)

Plug a Gilian dual-rate charger into a properly grounded AC outlet. Set the charging rate

select switch to the "Normal" mode.Insert the charging jack into the sampler's Charging

Receptacle (1), located on the side of the pump.Upon insertion, the "Normal" rate LED on the

charger will light indicating active charging of the battery pack.

Charge the battery for a minimum of 16 hours at the "Normal" rate.After 16 hours the

sampler may be removed from the charger and utilized.If the sampler must remain on charge

for longer than 16 hours, the charger should be switched over to the "Trickle" charge

mode.Charginginaccordwiththeabove instructionswillprolongbatterylife.Failuretofollow

these instructions may cause deterioration and permanent damage to the battery pack.

2.2 Filter Check:

MakesurethattheInletFilterAssembly(2)issecuredintothesuctionInletBoss(10).Check

thisby rotating the knurl on the bottom of the Filter Assembly clockwise. DoNot Overtighten.

3.0 Operation

The LFS-113 is a dual mode sampler, providing low flow air sampling in Constant Flow

or Constant Pressure (multiple flow) modes. In the "Constant-flow mode, the unit is externally

set from 5-200 cc/min. by adjustment of the Flow Control Valve (9). In the "Constant-pressure"

mode, the unit is externally set from 1-350 cc/min.by means of the Flow Controller Valve(s)

within the Flow Controller Tube Holder Assembly.

A green Battery Check LED Indicator (6) lights to show that the battery will run for a

minimum of eight (8) hours at any flow regime within the unit’s capability.A red Flow Fault

LED Indicator (7) is actuated by either a blocked inlet condition or insufficient battery voltage

to maintain the preset flow.

3.1 Mode Selection:

The Mode Selector Switch (4) is located on the back of the sampler, adjacent to the top of

the Belt Clip.This unlocks, indexes and re-locks the Mode Selector Valve into one of the Dual

sampling modes.

The Mode Indicator (3) is observable through a hole in the side of the case.If the indicator

is black, then the unit is in the "Constant-Flow" mode. If the indicator is light or white, then the

unit is in the "Constant-Pressure" mode (multi-flow sampling).

Tosetthe LFSpumpintoone of thesamplingmodes, insert theAllenKey, ("L"-shaped hex

wrench) provided with the sampler, into the Mode Selector Switch (4).Rotate the key counter-

clockwise to unlock the rotor. Continue rotating the key counter-clockwise approximately one

half a turn until the switch clicks in.

page 12

cannot exceed 350 cc/min. After the flow of each position has been set, check that no flow

interactions have occurred. If there has been a deviation at one particular position, go back to

each cassette and readjust the flow.

The unit can now be removed from the rotameter and prepared for sampling. In the

"Constant-pressure" mode, blocking any one or all of the sorbent tube inlets, will not cause the

sampler to flow fault.However, if the battery voltage falls below the operating point required,

the Fault Indicator (7) will light and the unit will cease running.

4.0 PERFORMANCE CHECKS

4.1 Constant Flow Performance Check

Make sure that the pump is in the "Constant-flow mode, (refer to Section 3.1for complete

mode selection procedure).A simple method of quickly checking constant flow performance is

provided by Gilian's Low Flow Industrial Hygiene Calibrator Pack (LIHCP).

AttachthepumpintotheLIHCPorsimilarcalibrationset-up,(seefigure6).Ifyouareusing

the LIHCP calibrator: open the shut off valve (V1). Turn the sampler ON. Adjust the sampler

flow by inserting a small blade screwdriver into the pump's recess marked Flow Adjust (9).

Engage the blade of the screwdriver with the slot of the Flow Control Valve and slowly rotate

the valve clockwise to decrease flow or counter-

clockwise to increase flow.Observe the reading on the rotameter.If a precision reading is

required, a film flowmeter must be used.

Close shut-off valve (V1) and adjust load valve (V2) to 20" H2O. Allow sufficient time for

theflowtoreachstability. NOTE:Ifverylowflowsarebeingused,pleaseallowseveralminutes

time for stabilization.Check the reading on the rotameter or the film flowmeter if one is being

used..Accuracy can be determined by taking the difference in flows over the original set

point.The deviation should be less than 5%.Reopening the shut-off valves allows rechecking

the initial set point.

4.1.1 Pressure Fault Check:

Using the same test set up as shown in figure 6, adjust load valve (V2) so that the pressure

onthemagnehelicgauge(P1)exceeds25-30"H2O.After3-5minutestheFaultIndicator(7)will

lightindicating an excessive pressure condition. Approximately 20 to 40 seconds later, the unit

will cease running and the time will be latched and indicated on the Clock Display (8) - (DC

models only). The fault can be cleared and re-set (opening the load valve) by turning the Power

Switch OFF and then back ON again.

4.1.2 Pressure Fault Clear Check:

Adjust load valve (V2) again so that the pressure exceeds 25-30" H2O. The Fault

indicator will light, indicating an excessive pressure condition. Slowly reduce the load

pressure. The Fault Light will extinguish at a pressure below 20" H 2O and the pump will

continue to operate normally.

page 10

Look into the mode indicator window on the side of the sampler to see that the indicator is

black or white, depending on the mode desired.Continue turning the selector switch counter-

clockwise until the desired mode has been set. Now, lock the rotor into position by rotating the

key clockwise - a half turn.Tighten Gently - Do Not Overtighten!

The samplers mode indicator will have appeared either black for "Constant-Flow" or white for

"Constant-Pressure".TurnthepumpON.Tocheckifthepumpisin"Constant-flowmode,hold

your finger over the Pump Inlet Boss (10), the samplers Fault Light will illuminate in

approximately 3-5 seconds. This signal means that the sampler is operating properly in the

"Constant-flowmode.NOTE:Ifthepumpissetataverylowflow(i.e..10cc/min.),itmaytake

10 seconds for the Fault Indicator LED (7) to illuminate.

3.2 Constant Flow Sampling:

First, make sure that the pump is in the Constant-flow mode. If needed, follow the

procedures explained in Section3.1 to achieve the "Constant-flow" mode.

Connect one end of the 1/8" ID tubing to the Pump Inlet Boss (10) and the opposite end to

the inlet boss of the Flow Controller Tube Holder Assembly.

NOTE:Each LFS-113D-DK& DC-DKkit comesequipped witha specialDual ManifoldTube

HolderKit(B-800148). Thiskitwasdesigned to sampletwo(2) standard 6mmx70mm sorbent

tubes when used in the "Constant-pressure" mode. However, when sampling in the "Constant-

flow" mode, you may use only one (1) Sorbent Tube Cassette.

Unscrew one of the tube cassettes from the Flow Controller Manifold. Remove one Tube

Holder End (p/n 800062) and slip the Collar Clip (800135) over the Tube Holder Housing

(200102). Install the desired sorbent tube with the arrow, (printed on the tube) pointing in the

direction of the air flow path. Replace the end and insert the additional Hose Barb Fitting

(800170). Connect the tubing from the Pump Inlet Boss (10) to the Hose Barb on the end of the

tube holder cassette.

For complete instructions, please refer to the instruction sheet for the "Universal Tube

Holder System",(Form no. FPRO-1218).

Turn the sampler ON. The sampler will run and the green Battery Check LED (6) will

illuminateindicatingthatthesamplercanbeusedfor8hoursundermaximumloadconditions.(If

the green light does not illuminate, the sampler may still be capable of running for an eight (8)

hour period, if not subjected to maximum load conditions).

NOTE: During normal sorbent tube sampling, the LFS system is used at approximately 50% of

it’s maximum capacity.

page 11

Settingflowinthe"Constant-flow"modeisaccomplishedbyadjustingtheflowadjustvalve

located on the front of the sampler. To set the flow, connect a piece of 1/8" ID tubing from the

inletoftheFlowControllerTubeHolder,tothesuctionsideofalowrangerotameter,(seefigure

4). Adjust the flow by inserting a small blade screwdriver into the recess marked Flow Adjust

(9)-engagethebladeofthescrewdriverwiththeslotoftheFlowAdjustValveandslowlyrotate

the valve clockwise to decrease flow or counter-clockwise to increase flow.

Once the flow has been established, allow the sampler to run for approximately one minute

to reach flow stability. A quick check of the fault system should be performed by blocking the

inlet to the pump and observing the activation of the Fault Indicator (7). Maintaining the

blockage for 20-40 seconds will cause the pump to cease and the time to latch. If the blockage

is removed prior to completion of the fault time activation period, the light will extinguish and

the pump will continue to run normally.

3.3 Multiple Flow Sampling:

Set the Mode Select Switch (4) to the "Constant-pressure" mode,( see Section 3.1 for

complete Mode Selection procedure). In this mode, the internal control valve is inoperative.

Attach the 1/8" ID tubing to the Flow Controller Manifold outlet boss (single, dual, triple

orquad),(seefigure5).ConnecttheoppositeendofthetubingtothebossofthePumpInletFilter

(2). Remove the protective end caps covering the Flow Adjust Valves of the Flow Controller

Manifold.Installthedesiredsorbenttube(s)withthearrow,(printed on thetube) pointinginthe

direction of the air flow path.Reassemble each sorbent tube cassette and install a boss into the

tube holder end of each cassette position if necessary. NOTE:For complete tube holder

assembly instructions, please refer to the "Universal Tube Holder System" sheet for description

and set-up.

Turn ON the sampler. The sampler will run and the green Battery Check LED (6) will

illuminate indicating that the sampler can be used for eight (8) hours under maximum load

conditions.(If the green light does not illuminate, the sampler may still be capable of running

for an eight (8) hour period, if not subjected to maximum load conditions).

NOTE: During normal sorbent tube sampling, the LFS system is used at approximately 50% of

it’s maximum capacity.

Connect a second piece of 1/8" ID tubing from the inlet boss of a sorbent tube cassette

position,to a rotameter,( seefigure 5). Adjusttheflow throughthesorbent tubebyadjusting the

Flow Control Valve located at that cassette position.Slowly rotate the valve clockwise to

decrease flow or counter-clockwise to increase flow.

Repeat this procedure for each of the sorbent tube holder positions by removing the tubing

from the inlet boss and reattach to the inlet boss of the next desired cassette position. NOTE:

In the "Constant-pressure" mode,the total cumulative flow of all the flow controller valves,