Chapter 7. Maintenance; Maintenance Schedule; Igniter-Injector - Aerco BENCHMARK 2500DF User Manual

Dual fuel gas-fired boiler

Table of Contents

Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual

7.1 MAINTENANCE SCHEDULE

The unit requires regular routine maintenance to keep up efficiency and reliability. For best operation and

life of the unit, the following routine maintenance procedures should be performed in the time periods

specified in Table 7-1. For a complete inspection check list see ASME CSD-1 chart.

In order to perform the maintenance tasks specified in Table 7-1, the following maintenance kits are

available through your local AERCO Sales Representative:

• Annual Maintenance Kit, Part No. 58025-01

• 24-Month Waterside/Fireside Inspection Kit, Part No. 58025-10 (See NOTE below)

The 24-Month Waterside/Fireside Inspection Kit also includes the items

contained in the Annual Maintenance Kit (58025-01). Therefore, only Kit

Part No. 58025-10 is required when performing the waterside/fireside

inspections. Refer to Appendix J for recommended spare

To avoid personal INJURY, prior to servicing ENSURE THAT THE

FOLLOWING GUIDELINES ARE STRICTLY OBSERVED:

• Disconnect the AC supply by turning off the service switch and

AC supply circuit breaker.

• Shut off the gas supply at the manual shut-off valve provided

with the Unit

• Allow the Unit to cool to a safe water temperature to prevent

burning or scalding

Section

Igniter-Injector

7.2

(66013)

Flame Detector

7.3

(66020)

7.4

Lean O

Sensor (61026)

4.3 & 4.4

Combustion Calibration

Testing of Safety

7.5

Devices

7.6

Burner

7.7

Condensate Drain Trap

7.8

Air Filter (88014)

7.9

12V Fan

* Only performed after initial 6 month period after initial startup.

7.2 IGNITER-INJECTOR

The igniter-injector (part no. 66026) is located on the burner plate at the top of the boiler. In addition to

providing the ignition spark required to light the burner, the igniter-injector also contains a gas injector

tube which connects to the staged ignition assembly. Figure 7-1 shows the complete burner assembly

OMM-0099_0A

GF-145

CHAPTER 7 – MAINTENANCE