Bacharach H25-IR PRO Manuel utilisateur

External Filter Retrofit

Instruction 3015-9004

Revision 0

September 2014

Product Leadership • Training • Service • Reliability

H25-IR PRO External Filter Retrofit

2 P/N: 3015-9004 Rev 0

SECTION 1: INTRODUCTION

1.1. Purpose

The previous generation of the H25-IR Pro leak detector had an internal filter that required disassembly for replacement.

This was changed in the newer model of the H25-IR Pro to an external filter found at the rear of the instrument. The

purpose of this document is to explain the procedure for upgrading an older-style H25-IR Pro leak detector to include the

newer external filter.

Figure 1-1. Back Panel Comparison of Previous and Current Generations of the H25-IR Pro

1.2. Required Tools

The following items are required to complete the retrofit.

Item Description Function

Cross-type screwdriver (#2 size)

Chassis access and audio PCB removal

Flat blade screwdriver

Power entry module removal

3 ¼” wrench or nut driver RS-232 connector removal

1/16” (1.5 mm) hex key (provided)

RS-232 connector removal

8 mm open-end wrench

Speaker removal

6 Needle nose pliers Aid in connecting the sample entry tubing

Figure 1-2. Tools Required to Complete the H25-IR Pro External Filter Retrofit

H25-IR PRO External Filter Retrofit

P/N: 3015-9004 Rev 0 3

1.3. Retrofit Kit Contents

The H25-IR PRO External Filter Retrofit Kit (P/N 3015-5817) comes with all required new components to adapt the H25-IR

Pro to use the new external filter.

Qty Part Number Description

1 3015-5815 New rear panel; includes 1 new filter (P/N 3015-5816)

1 3015-5818 5-pack of additional new filters (pack of 5 of 3015-5816)

17 in

0003-6372

Silicon tubing (1/16” ID x 1/8” OD) for inlet line

7 in Silicon tubing (1/16” ID x 1/8” OD) for return line to internal reducer elbow

1 0103-5288 Barbed reducer elbow (1/8” to 1/16” ID tube) to adapt H25-IR Pro to use the external filter

1 0006-9358 1/16” (1.5 mm) hex key

1 3015-9004 Instructions

Figure 1-3. Components of the 3015-5817 Retrofit Kit (Instruction Manual Not Shown)

∇∇∇

H25-IR PRO External Filter Retrofit

4 P/N: 3015-9004 Rev 0

SECTION 2: REPLACEMENT PROCESS

2.1. Rear Plate Removal

Step Description

1 Unplug the AC power cord.

2 Unplug the probe assembly.

Remove the front and rear

bezel by gently pulling at the

left or right center point.

Remove the top chassis

screws at the front and back.

Pry up on the chassis lid and

remove.

With the rear of the chassis

facing you, remove all three

terminal blocks by pulling

straight out.

6 Disconnect the RS232 and

audio PCB ribbon connectors.

H25-IR PRO External Filter Retrofit

P/N: 3015-9004 Rev 0 5

Step Description

Disconnect the AC power

entry module wires, noting

the wire color and position.

8 Remove the two lower chassis

screws.

Carefully pull the rear plate

away from the back of the

chassis.

Locate the exhaust tube port

inside the instrument, where

it exits. Pull the tubing off the

barbed fitting. The rear plate

will now be free from the

instrument.

2.2. Part Transfer to New Plate

Step Description

1 Using the tools described earlier, remove and reinstall the speaker, RS-232, exhaust port barbed fitting, and

audio PCB onto the new rear plate. Connect the speaker as required.

The AC power entry module is removed by pressing the springs on each side inward until they are flat. Do this

while pressing down on the module to aid release. The terminal blocks removed earlier may be used as a

support for the plate while the power entry module is removed. As soon as one side is released the other side

will release easily.

3 Insert the power entry module in the new rear plate, noting that the power switch is to the right, and the

ground pin is up.

2.3. Installation of New Plate

Step Description

1 Installation is generally the reverse of the removal steps.

2 It is recommended that the exhaust tube be connected first.

Align the new rear plate to the instrument PCB terminal strip. Insert the terminal blocks to aid holding the plate

in place.

NOTE: Ensure the new filter tubing is not pinched, kinked, or trapped between any components.

4 Reconnect the audio PCB, RS232, and power entry module wires.

2.4. Tubing Changes

Step Description

1 Locate the 25 mm diameter filter and sample inlet tubing. The tubing is 1/8” (3 mm) silicone.

2 Disconnect the filter from the larger tubing nearest the main PCB.

H25-IR PRO External Filter Retrofit

6 P/N: 3015-9004 Rev 0

Figure 2-1. Internal Tubing Comparison of Previous and Current Generations of the H25-IR Pro

H25-IR PRO External Filter Retrofit

P/N: 3015-9004 Rev 0 7

Step Description

3 Disconnect the sample inlet tubing from the inlet fitting by pulling gently.

Locate the 17” (432 mm) long piece of tubing preinstalled on the new rear plate / external filter. The tubing is

entering near the top of the ear plate, and has no other fitting attached. Thread this toward the front of the

instrument and connect to the sample entry fitting. Needle nose pliers may help with this step. Ensure the

tubing and electrical connections are not damaged.

5 Twist the tubing on the tee next to where the internal filter was connected, so that the tubing stub is pointing

upward. See the photos below.

Locate the 7” (178 mm) long piece of tubing with attached elbow fitting, preinstalled on the new rear plate /

external filter. The tubing is entering near the bottom of the ear plate. Thread the tubing and mate the elbow

fitting to the tubing stub from the last step.

7 When finished there should be 1” to 2” (25 mm to 50 mm) of extra tubing to the external filter. Adjust the

tubing route if needed to ensure some slack tubing is present.

8 Confirm all electrical and tubing connections are made.

9 Replace the chassis lid and bezels.

∇∇∇

H25-IR PRO External Filter Retrofit

8 P/N: 3015-9004 Rev 0

SECTION 3: MAINTENANCE

3.1. Replacing the External Filter

Step Description

1 Turn off power.

Grasp the filter housing and rotate the top back and down, twisting the filter out of the mounting clip. Use

caution as the clip has high force. Do not pull the filter away further than 2” (50 mm) from the back of the

instrument. If the tubing becomes taut, move the filter closer to the instrument.

3 With the filter free of the clip, disconnect the top tubing from the fitting. Install the new filter, noting the proper

orientation (shown below).

4 Repeat for the lower tubing. Dispose of the used filter.

Install the filter in the opposite manner to removal. Start with the filter at an angle, with the lower part pressed

into the clip. Guide the tubing through the rear plate as needed to ensure the tubing isn’t kinked. Rotate the

filter inward and upward into the clip. As the top of the filter enters the clip it will be strongly pulled in.

6 Double check the tubing, ensuring it is fully seated on the elbow fittings and is not kinked or pinched.

Figure 3-1. Back Panel of the H25-IR Pro Showing the External Filter

H25-IR PRO External Filter Retrofit

P/N: 3015-9004 Rev 0 9

3.2. Service Centers

Service and replacement parts can be obtained by contacting one of the following Bacharach Service Centers.

United States

Bacharach, Inc.

621 Hunt Valley Circle

New Kensington, PA 15068

Phone: 724-334-5051

Fax: 724-334-5723

Email: help@mybacharach.com

Canada

Bacharach of Canada, Inc.

20 Amber St. Unit #7

Markham, Ontario L3R SP4

Canada

Phone: 905-470-8985

FAX: 905-470-8963

E-mail: support@BachCan.ca

∇∇∇

H25-IR PRO External Filter Retrofit

10 P/N: 3015-9004 Rev 0

Headquarters:

621 Hunt Valley Circle, New Kensington, PA 15068

Website: www.mybacharach.com • E-mail: help@mybacharach.com

Printed in U.S.A. ® Registered Trademark of Bacharach Inc.

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