SERVICING

SERVICING

75 HEAT EXCHANGER REPLACEMENT

Note. Refer to Frame 7 (Boiler assembly - Exploded view) for illustration of the procedure detailed below.

1.Refer to Frame 61.

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

3.Drain the system.

4.Disconnect the water connections. If compression fittings are used then cut the pipes both above and below the fittings in order to allow the heat exchanger assembly to be removed. Remove the heat exchanger drain plug and drain the residual water into a suitable receptacle.

5.Remove the fan/collector hood assembly, refer to Frame 55. Pull off the electrical connections from the overheat thermostat and pull off the white rubber tube from the siphon blockage sensing pipe.

6.a. Rear Flue Outlet - Remove the two screws retaining the recuperator top section. Pull the recuperator top section to release the flue pipe connection.

b.Side Flue Outlet - Remove the 3 screws retaining the top outlet connection casting and remove casting. Refer to Frame 26 No. 6.

7.Remove the combustion chamber by unscrewing the 4 tie rods.

8.Remove the thermostat sensors from the pockets on the heat exchanger by removing the M3 screws and plates.

9.Remove the condensate sump. Refer to Frame 57.

10.Slacken 3 turns only the 2 bottom heat exchanger / interpanel retaining screws and remove the top 2 heat exchanger/interpanel retaining screws

11.Lift the heat exchanger / interpanel assembly upward and forward to disengage key hole fixings. Pull the assembly downwards to clear the water pipes from the back panel.

Note. Take care with any residual water held in the heat exchanger/ recuperator.

12.Remove the 2 rubber sealing grommets from the top of the back panel to facilitate fitting the new assembly.

13.Fit the new heat exchanger assembly, complete with water pipes, and hang it on the bottom key hole slots and screws. Refit the top 2 screws and tighten 4 screws.

14.Replace the 2 rubber sealing grommets.

15.Reassemble in reverse order.

16.Remake all water connections, ensuring that the compression fittings (if used) are correctly refitted.

17.Fully test all functions, including water and gas soundness.

5

76 CASING FRONT SEAL REPLACEMENT

1.Refer to Frame 61.

2.Remove the old seal from the casing front and thoroughly clean the casing surface.

3.Fit the new self adhesive seal.

4.Replace the boiler casing front.

Reverse of casing panel

Seal

40

classic HE - Installation & Servicing

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IDEAL INDUSTRIES HE9, HE18, HE12, HE15 manual Servicing, Heat Exchanger Replacement, Casing Front Seal Replacement
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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.

The HE18 model, while slightly more streamlined than the HE24, still offers robust capabilities. It features multiple testing modes, including continuity and diode testing, catering to a wide range of electrical tasks. The HE18 also utilizes a user-friendly interface, allowing technicians to navigate easily through various functions. Equipped with a protective rubber housing, this model is durable and built to withstand the rigors of frequent use on job sites.

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.

All models in the IDEAL INDUSTRIES HE series are engineered with safety in mind, adhering to stringent international testing standards. They provide superior insulation resistance and a high degree of accuracy, mitigating the risks associated with electrical work. Furthermore, their IP-rated enclosures ensure protection against dust and moisture, enhancing longevity.

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.
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