Specifications

D-1000B Heater Operations & Maintenance
5.4.9 Removal, Installation and Gap Adjustment Procedures for Ignition Electrodes
5.4.9.1 Electrode Removal procedures:
1. Disconnect power cord from power source and allow heater to cool.
2. Remove four quick release pins and remove top cover (see Figure 5-1).
3. Using an 8mm nut driver, remove the upper heat shield (05) by removing six screws (79) and two sheet metal
screws (78); remove heat shield and set aside.
4. Disconnect both H.T. ignition cables (64) from electrodes (63) (see Figure 5-9).
5. Using a Phillips head screwdriver loosen and remove two screws (85). Remove the both electrodes (63).
6. Rotate burner flange (61) counter-clockwise to align tabs with slots on the burner flange. Remove burner flange
(61) from combustion head (40).
5.4.9.2 Electrode Installation procedures
1. Install electrodes (63) into the burner flange (61).
2. Using a Phillips head screwdriver install and tighten two screws (85) to secure the electrodes (63).
3. To achieve the required gap of 3mm, refer to Step 5.4.9.3 before proceeding with installation procedures.
4. Align slots in burner flange (61) with tabs on the combustion head (40). Rotate burner flange (61) clockwise to
lock tabs.
5. Reconnect H.T. ignition cables (64) onto the electrodes (63) (see Figure 5-9).
6. Install upper heat shield (05). Using an 8mm nut driver install and tighten six screws (79) and two sheet metal
screws 78).
7. Install the top cover and four quick release pins as shown in Figure 5-1.
8. Test heater in accordance with the operations manual. (See Chapter 6).
5.4.9.3 Electrode Gap Adjustment procedures:
1. Electrodes may be adjusted to achieve the required gap of 3mm after the electrodes have been securely fastened
2. Using a feeler gauge ensure the electrode tips are set at 3mm centered on the nozzle (59) as shown in Figure 5-
10. If required, electrode tips may be adjusted by hand.
Figure 5-10 – Ignition Electrode Gap Adjustments
MAINTENANCE, and REPAIR PROCE
DURES 5-14 DHS SYSTEMS LLC
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