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H-25C Instruction Manual

Instruction 3015-0216

55

Customer Maintenance Parts List

Item

Part No.

Qty.

Description

Item

Part No.

Qty.

Description

1
2
3
4
5
6
7
8
9

10
11
12

3015-1113
3015-4181
3015-1134
3015-2753
3015-1209
3015-1310
3015-2363
3015-2398
3015-2418
3015-1630
3015-0807
-
3015-2552
3015-2556
3015-2560

1
1
1
2
1
1
1
1
1
1
1
1

Pump Assembly
Regulator Assembly
Regulator
O-Ring
Flow Sensor Assembly
Fun Assembly
Activated-charcoal Filter
Sheet (filter)
Activated-charcoal Pack (5 pcs)
Fuse (3.15 A 250V)
Sensor
Transformer Assembly
(for 100/115 V power)
(for 120/240V power)
(for 110/220V power)

13
14
15
16
17

3015-2476
3015-1092
3015-1182
3015-2757
-
3015-1855
3015-1860
3015-2213
3015-2150
3015-2218

1
1
1
1

Filter
Speaker
Screw
O-Ring
Probe
S-type, 1.8 m
S-type, 4.5 m
L-type, 1.8 m
L-type, 4.5 m
L-type, 7.5 m

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Summary of Contents for H-25C

Page 1: ...H 25C INDUSTRIAL HALOGEN LEAK DETECTOR Instruction 3015 0216 Operation Maintenance Rev 0 Product Leadership z Training z Service z Reliability...

Page 2: ...6 2 2 4 Setting the RELAY Relay State Selector switch 17 2 2 5 Setting the MODE Measurement Mode Selector switch 18 2 2 6 Setting the Alarm Point 18 2 2 7 Setting the CAL Calibration Mode Selectorl sw...

Page 3: ...be sucked in 49 6 2 Possible Causes of Malfunctions and What to do If They Occur 50 6 2 1 Does not operate at all 50 6 2 2 Does not detect leaks 50 6 2 3 Measured value is too low 50 51 6 2 4 Measure...

Page 4: ...is manual these will be hereafter written as R 134a and R 12 2 Unpacking and Initial Checks Your H 25C Halogen Leak Detector was carefully inspected at the factory before shipment and packed so as to...

Page 5: ...filters on hand at all times Note that the sensor will deteriorate even while in storage if exposed to humidity Always store the sensor in the sealed condition in which you received it 5 Operating Pr...

Page 6: ...idity To obtain the best leak detection performance keep the following in mind Ventilate the work area well so that contaminants cannot accumulate in the air The surface on which you place the H 25C s...

Page 7: ...H 25C Instruction Manual Instruction 3015 0216 7 The parts in instruments manufactured before September 94 are different...

Page 8: ...with contact output Factory setting A type mode 1 Factory setting 4 hours Factory setting 5 times Begin warm up Measurement and Calibration Operator action Data Display Bar Graph Display Speaker Tone...

Page 9: ...H 25C Instruction Manual Instruction 3015 0216 9 7 Special Symbols and Formatting Used in This Manual The Display State Lit or Flashing is Indicated in Figures as follows...

Page 10: ...H 25C Instruction Manual Instruction 3015 0216 10 1 NAMES AND FUNCTIONS OF COMPONENTS Model codes specifications gases measured calibration gas flow 1 1 Setup Area Details...

Page 11: ...ration possible Contact Output N 1 No Relay Yes Dry Contact Relay Output Supply voltage 5 6 7 100 115 V 50 60 Hz 120 240 V 50 60 Hz 110 220 V 50 60 Hz Analog output N 1 No Yes 0 1V DC Analog Output In...

Page 12: ...plied as option if specified Manual calibration using LS20B Leak Standard 0 to 1V DC output resistance 1 max function supplied as option if specified One Alarm point output generated when measurement...

Page 13: ...Filter O ring for L type probe 3015 1705 Unit of purchase 1 set one piece each Activated Charcoal pack 3015 2418 Unit of purchase 1 set five pieces Sensor 3015 0807 Unit of purchase 1 piece Fuse rati...

Page 14: ...H 25C Instruction Manual Instruction 3015 0216 14 1 6 Internal Flow Paths Measured Gas Internal Flow Path...

Page 15: ...the instrument is shipped with the sensor removed and sealed in a humidity excluding bag Install the sensor as follows 1 Remove the sensor changer cover 2 Remove the protective cap attached to the se...

Page 16: ...e The GAS switch is at the right of the setup area on the main unit front Open the setup area cover to gain access to it Set the GAS switch lever to the R134a position if using the instrument for R134...

Page 17: ...set up at the factory as a normally open N contact selecting energize will result in the contacts closing when the signal is output whereas selecting de energize will result in the contacts opening I...

Page 18: ...n the bar graph The value at which the alarm output trips is called the alarm output trips is called the alarm point Although this point can be freely set by the user there are restrictions on the low...

Page 19: ...position 2 2 8 Setting the CAL INTVL Calibration Request Interval Switch The H 25C can issue requests for calibration operations at fixed intervals when A type measurement mode is selected At the time...

Page 20: ...times integer factor the sensitivity of pass fail mode used to measure leak flows However the sensitivity multiplication factor is restricted by the alarm contact setpoint Caution In search mode the...

Page 21: ...power receptacle 2 5 Applying Power Turning the Power Switch ON Note When using this instrument always keep in mind that it contains parts that operate at high temperatures the sensor and circuits whe...

Page 22: ...H 25C Instruction Manual Instruction 3015 0216 22 When power is applied the display will appear as shown below...

Page 23: ...ve is open at the time that you open the valve on the calibration gas tank a pressure of nearly 600KPa 6kgf cm2 may be imposed on the calibration gas tubing system Even though the tubing system will n...

Page 24: ...RT Therefore once the calibration gas secondary pressure has been adjusted that adjustment need not be done again until the calibration gas R134a is exhausted However when the instrument not adjusted...

Page 25: ...g the variable resistor labeled AUDIO in the setup area 2 9 Allowing Air to Flow at the End of Preparation Completing the setup operations through Section 2 8 completes the preparations for use If you...

Page 26: ...again after repeated fixed intervals calibration request interval The calibration request message will also appear if the measured value in search mode is at or above the trigger point see Subsection...

Page 27: ...H 25C Instruction Manual Instruction 3015 0216 27 BACHARACH...

Page 28: ...ation gas used in the H 25C s optional built in leak standard is R 134a At a secondary pressure of 170 kPa 1 7 kgf cm2 this cal gas will flow out from the CAL PORT at a rate of 9 X 10 5 to 11 x 10 5 s...

Page 29: ...he countdown starting from 7 on the display reaches 0 Leave the instrument in search mode do not press the pass fail switch on the probe When the countdown reaches 0 the instrument s internal circuits...

Page 30: ...s displayed The capillary is plugged and the calibration gas cannot flow out from the CAL PORT 2 E 2 Sensor Sensitivity Too Low or E 3 Sensor Sensitivity Too High This fail code is displayed if the se...

Page 31: ...L PORT and with the instrument in search mode probe switch not depressed let the probe suck in clean air The instrument will start its calibration operations after about seven seconds When it starts t...

Page 32: ...on approaches the allowable limit an error code A 1 to A 3 is displayed for about four seconds before completing calibration The two alarm codes are as follows take appropriate action depending on the...

Page 33: ...d the atmosphere of unwanted gases where leakage inspections are made are given at the end of the manual after chapter 6 4 1 2 Getting Ready for Measurement 1 Connecting the Power Cable Supply the H 2...

Page 34: ...go into measurement mode after about 180 seconds of warm up During the warm up time or immediately after transferred to the measurement mode check the following Make Sure that the Fan is Running The f...

Page 35: ...e If the intake flow remains below about one quarter of this value for about 30 seconds AIR FLOW will be displayed If AIR FLOW is displayed replace the probe filter If the intake flow does not recover...

Page 36: ...the probe indicator lamp lights The tone and the lamp are switched off when the value is 20 below the alarm point If the H 25C is equipped with an alarm contact output then if the leak rate reaches t...

Page 37: ...h the tone change If you have difficulty in searching for a leak due to unwanted gas in the atmosphere I Ambient gas levels high enough to exceed the search trigger level will not only interfere with...

Page 38: ...herefore you must exercise care in the use of this feature if it is important to know for sure whether any leak is present Calibration Request Operation functions in A type mode A calibration request...

Page 39: ...ate is the same as in B type mode Operation in pass fail mode is as follows In pass fail mode the 100 point on the bar graph display becomes the alarm point The measured value in the display area is d...

Page 40: ...display section set the UNIT switch as shown in the figure below Note that the displayed value is the result of computation based on the secondary pressure of the calibration gas The displayed value m...

Page 41: ...s deteriorated See Section 5 4 for corrective action 4 2 7 Turning the Power Switch OFF The usable life of the sensor and the activated charcoal filter are highly dependent on the time that power is O...

Page 42: ...spring switch In case of the S type probe the tube for introducing gas must be removed to perform this operation 2 After providing ON signal immediately remove the probe from the CAL PORT and suck in...

Page 43: ...in by the air is removed by the probe filter When the material removed begins to clog the filter sufficiently that a condition in which the flow drops to around 1 4 that rate continues longer than 30...

Page 44: ...its effectiveness at conversion In general if you are using the H 25C seven hours a day an activated charcoal filter can be used for 30 to 60 days We recommend that you schedule periodic replacements...

Page 45: ...then push them down into the case see figure 5 4 c Push down the whole filter until it is lower than the top edge of the case d Replace the cover so the open end of the tube beneath the cover touches...

Page 46: ...t step you will begin the filling task Since a large amount of freon gas will leak out during this process you should do the work in a location well removed from the leak inspection area 5 Open the ta...

Page 47: ...Note that proper calibration will be impossible if any air is left in the tubing After adjustment loosen the gas bleed plug for about three seconds repeat s action two or three time 5 4 Replacing the...

Page 48: ...d in dry the inner tube before replacing the filter Note the following when replacing the filter Turn the power switch off Since the disc filter distinguishes the inflow direction from the outflow dir...

Page 49: ...ely divide the measured gas flow If you allow liquid to be sucked into the instrument contaminants will be deposited on the manifold surfaces changing the division ratio so that accurate measurement w...

Page 50: ...calibrate to proper value See Subsection 6 2 10 6 2 1 Does Not Operate at All The three most likely causes are 1 Blown Fuse After making sure that power is actually being supplied check the fuse See S...

Page 51: ...working or performing poorly Replace with good pump Note No adjustment required after replacement 4 Manifold internal flow path clogged Return to Bacharach for repair component replacement 5 Flow sens...

Page 52: ...Used Up Too Quickly The most likely two causes are 1 Leakage from gas bleed plug at capillary receiver section Check first whether plug is loose If not replace 0 ring 2 Leakage from tank seal gas outl...

Page 53: ...ed it is recommended that the facilities described below be provided Example 1 of Proper Facility Reference Figure 1 shows an example of a facility that helps extend the service life of sensors and ac...

Page 54: ...rolong the service life of sensors and activated charcoal filters If the facility to be provided is similar to that shown in Reference Figure 2 take the following requirements into consideration 1 The...

Page 55: ...15 2560 1 1 1 2 1 1 1 1 1 1 1 1 Pump Assembly Regulator Assembly Regulator O Ring Flow Sensor Assembly Fun Assembly Activated charcoal Filter Sheet filter Activated charcoal Pack 5 pcs Fuse 3 15 A 250...

Page 56: ...5 0947 3015 1545 3015 2096 3015 2102 3015 2108 3015 2114 3015 1194 1 1 1 1 1 1 1 1 Tank Assembly w freon O Ring O Ring O Ring O Ring Printed circuit Assembly Printed circuit Assembly For 100 115V powe...

Page 57: ...B 4 Houston TX 77092 Tel 713 683 8141 Fax 713 683 9437 E mail TXSERVICE bacharach inc com CANADA Bacharach of Canada Sales Service Center 250 Shields Court Unit 3 Markham Ontario L3R 9W7 CANADA Tel 90...

Page 58: ...H 25C Instruction Manual Instruction 3015 0216 58 Notes...

Page 59: ...World Headquarters 621 Hunt Valley Circle New Kensington PA 15068 Ph 724 334 5000 Fax 724 334 5001 Toll Free 1 800 736 4666 Website www bacharach inc com E mail help bacharach inc com Printed in U S A...

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