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Bacharach H25-IR manual Part Replacement, Removing the Top Cover

Models: H25-IR

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5.4 Part Replacement

Maintenance	H25-IR

5.4 Part Replacement

WARNING! Shock Hazard. Before performing any service work, remove the AC power cord to prevent electrical shock.

Part replacement is limited to replacing filters, O-rings, and fuses. It is recommended that all other parts be replaced by an authorized Bacharach Service Center (refer to Section 6.2 Service Centers).

5.4.1 Removing the Top Cover

When servicing the parts inside the instrument, the instrument’s top cover is removed as follows:

Items Required:

•Medium Phillips head screwdriver

Procedure:

1.Remove both the front and rear bezels by first disengaging the plastic tabs on the right and left sides of the bezel, and then pulling the bezel straight out.

2.Remove the two top screws that secure the front panel.

3.Remove the four screws that secure the rear panel.

4.Remove the Relay, RS-485, and 4–20mA connectors from the rear panel. DO NOT remove any connector on the interior side of the rear panel.

5.Drop down the rear panel far enough to allow the top cover to clear, being careful not to stress the cables attached to the inside of the panel.

6.Remove top cover by sliding it toward rear of instrument.

46	Instruction 3015-4342

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Bacharach H25-IR manual Part Replacement, Removing the Top Cover

Contents

H25-IR Infrared Refrigerant Gas Leak DetectorOperation & Maintenance InstructionWARRANTY Register Your Warranty by Visiting2 Preparing for Operation Table of Contents1 Introduction 3 CalibrationSpecifications MaintenanceParts and Service Operation1.2.4 AC Power and Grounding 1.2 Safety Precautions1.2.3 Hazard Symbols 1 Introduction1.2.6 Working Inside the Instrument 1.2.9 Cleaning1.2.5 Explosive Atmosphere 1.2.7 Misuse and Modifications to InstrumentCode 1.3 Ordering Information1.4 Unpacking and Initial Checks Description1.5 Features and Capabilities 1.6 Functional Overview Leak Rate = Flow Rate x Gas ConcentrationFront Panel Buttons 1.7 Names and Functions of Components1.7.1 Front View Introduction 1.7.2 Rear View 1.7.3 InteriorH25-IR H25-IR 1.7.4 Standard ProbeIntroduction H25-IR 1.7.6 Smart Probe1.7.7 Smart Probe Keylock Function IntroductionH25-IR 1.8 Menu SystemIntroduction 2 Preparing for Operation 2.1 Connecting the Probe2.2 Connecting the AC Power Cord 2.3 Turning ON the Instrument2.4.2 Leak Units 2.4 System Setup2.4.1 Gas Type R134A1 = NOT USED 2.4.3 Relays2.4.4 4-20mA Loop CLOSE AT LOG LIMIT2.4.6 Clock 2.4.9 Reset Defaults2.4.5 Brightness 2.4.7 PCHK Mode2.5.2 Range 2.5 Configuring the SETUPS Function2.5.1 Setup Name 2.5.5 Setpoint 2.5.3 Gas Type2.5.4 Feedback Mode CONTINUOUS2.6 Calibration 2.5.6 Search Auto Zero2.7 External Relay Connections Typical Relay 1 Wiring2.8 4-40mA Current Loop Connection 4-20mA Current Loop ConnectorInstruction Preparing for OperationH25-IR 3.1.1 Internal Calibration Selection 3 Calibration3.1 Selecting Internal or External Calibration INTERNAL3.1.2 External Calibration Selection and Setup EXTERNAL3.2 Internal Calibration 0.890.00 Calibration 0.893.3 External Calibration H25-IRMaterial Required 3.4 CAL FactorProcedure Calibration H25-IR3.4.3 Adjusting the CAL Factor 3.5 Restoring Factory CalibrationInstruction CalibrationH25-IR 4.2.2 Initial Setup 4.2 Using the H25-IR4.2.1 Power 4 Operation4.2.3 Range Selection 4.2.4 Setup SelectionSETUP NO 4.2.5 Volume Adjustment 4.2.6 Searching for a Leak2.80SM MEASR1 4.2.7 Measuring the Leak Rate4.2.8 Measuring the PPM Level 38.0SM MEASR14.2.10.1 Viewing Logged Measurements 4.2.9 Logging Measured Readings4.2.10 Working with Logged Measurements Operation 4.2.10.4 Setting the Log Limit4.2.10.2 Clearing the Log H25-IR4.5 RS-232Communication 4.3 What to Do when a Fault Occurs4.4 What is PCHK? Diagnostics MenuInstruction OperationH25-IR 5.1.1 Sensor Data 5 Maintenance5.1 Diagnostics Menu Sensor Data Screen InformationH25-IR 5.1.2 Last FaultMaintenance 5.1.4 Pressure 5.2 Factory Menu5.1.3 IR Emitter 5.2.3 Leak Rate 5.2.1 Auto Gain5.2.2 DIGIPOT 5.2.4 Leak Gas5.2.7.1 Pressure Sensor Calibration Screen 5.2.6 Leak TEMPCO5.2.7 Sensor Cal PRESSURE5.2.9 Probe Type 5.2.7.3 Box Temperature Calibration Screen5.2.8 Model Select 5.2.10 FirmwareItems Required 5.3 Flashing MemoryProcedure Click OK Click Open 5.4 Part Replacement 5.4.1 Removing the Top Cover5.4.2 Fuse Replacement 5.4.3 Probe Tip Filter & O-RingReplacement5.4.4 Internal Filter Replacement 6 Parts and Service 6.1 Replacement PartsCanada 6.2 Service CentersUnited States MéxicoR600a 7 SpecificationsCFCs, HCFCs, HFCs and Halogens SF6Instruction SpecificationsH25-IR APPENDIX A - Factory Defaults Instruction Appendix AH25-IR H25-IR Appendix AHeadquarters 621 Hunt Valley Circle, New Kensington, PA