SERVICING

71 FAN REPLACEMENT

1.Refer to Frame 61.

2.Remove the two fan electrical connections, the red pressure sensing pipe, the blue CO/CO2 sensing pipe and the two fan fixing screws.

3.Pull the fan forward, remove and retain.

4.Fit the new fan and reassemble in reverse order, ensuring the fan leads, 2 sensing tubes and the two fan fixing screws are reconnected.

5.Check the operation of the boiler.

Fixing screws

Air pressure switch &

Electrical

CO/CO2 sensing pipes

connections

 

72AIR PRESSURE SWITCH (APS) REPLACEMENT

1.Refer to Frame 61.

2. Remove the APS fixing screw.

2

3. Remove the 2 sensing tubes from the APS.

4. Remove the 3 electrical connections from the APS.

5. Fit the new APS and reassemble in reverse order.

6. Check the operation of the boiler.

red

4

red violet

white

yellow

3

SERVICING

73 PRINTED CIRCUIT BOARD (PCB) REPLACEMENT

1.Refer to Frame 61.

2.Remove the control box fixing screws and swing the control box down into the servicing position.

3.Disconnect the detection lead from the PCB.

4.Unplug all the Molex connectors from the PCB.

5.Disengage the PCB from the mounting posts and withdraw from the control box.

6.Fit the new PCB and reassemble in reverse order.

7.Check the operation of the boiler.

Fuse.

To change the fuse, prise it out of the holder and disengage the fuse. Refer to Frame 78 for fuse location.

74COMBUSTION CHAMBER INSULATION REPLACEMENT

1.Refer to Frame 61.

2. Remove the burner and air box assembly. Refer to Frame 54.

3. Remove the 4 tie rods.

Note. remove rubber grommets to gain access to side tie rod screwdriver slots.

4.

Remove the combustion chamber.

3

5.

Remove the 2 side panel retaining brackets.

6.

Remove the side insulation panels.

 

7.

Remove the front and rear insulation panels.

 

8.

Fit the new front and rear insulation panels.

 

9.

Fit the new side panels and retain with the

 

 

brackets and screws previously removed.

 

10.Reassemble in reverse order.

classic HE - Installation & Servicing

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IDEAL INDUSTRIES HE15, HE9, HE18, HE12 manual Servicing FAN Replacement, AIR Pressure Switch APS Replacement, Fuse

HE12, HE15, HE18, HE9 specifications

The IDEAL INDUSTRIES HE series, comprising the HE24, HE18, HE15, and HE12 models, represents a significant advancement in the field of electrical testing and measurement tools. These versatile testers stand out in professional environments for their high accuracy, user-friendly interfaces, and advanced features designed to enhance efficiency and reliability in electrical inspections.

The HE24 is the flagship model, boasting an extensive range of functionalities. It includes advanced digital multimeter capabilities, allowing for precise measurements of voltage, current, and resistance. Its True RMS feature ensures accurate readings, even with non-linear loads. The HE24 also incorporates advanced connectivity options, including Bluetooth technology, enabling users to transfer data wirelessly to smartphones or tablets for further analysis. The large, backlit display enhances visibility in various lighting conditions, making it an ideal tool for both indoor and outdoor use.

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The HE15 and HE12 models represent the compact, entry-level offerings in the HE series. Designed for the budget-conscious user, these models retain essential functionalities such as basic voltage and current measuring capabilities while prioritizing ease of use. The HE15 includes a simple LED indicator to signal when measurements are being taken, promoting straightforward operation. Additionally, the HE12 features a lightweight design, making it the perfect tool for on-the-go technicians.

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In conclusion, the IDEAL INDUSTRIES HE24, HE18, HE15, and HE12 series represent a comprehensive range of electrical testing tools that cater to professionals' varied needs. With their combination of advanced features, user-friendly designs, and safety compliance, these models are excellent choices for any electrical technician aiming for accuracy and efficiency in their work.