2017_E_TYPE-HL.doc Page 40 of 55 24-Oct-2017
Disconnect the airflow tube and blow out clogged debris with compressed air if required.
6.2.8 Automatic Gas Valve
The automatic gas valve (On-Off Fluid Power Actuator and Valve Body) is rated at 120V
and is supplied as part of the E burner gas train.
Note: These gas valves are not field repairable and have to be replaced if they leak or fail.
6.2.9 Air Damper
The air damper controls the amount of airflow through the burner and ensures proper
combustion at the burner tip. If the damper loosens it should be re-adjusted to factory settings
[Table 9.1] or normal operating position and fastened in place.
6.3 Door Gaskets and Seals
The function of the door gasket is to serve as a tight seal to minimize air leakage into the
heat-cleaning oven. The door gasket may wear over a period of time. This could cause a
substantial volume of cold air leakage into the oven, which could in turn cause cold spots in the
unit.
Thus, the heat-up time in the process chamber would increase significantly. Further,
excess air causes longer cycles and poor processing cycles. The door gasket should be checked
periodically to ensure that it has not been damaged.
If any section of the gasket is damaged, the whole gasket must be replaced. Refer to the
following guidelines:
1 Pull off and remove old gasket entirely.
2. Scrape away the residual door sealant.
3. Coat one side of the tail of the gasket with sealant. Let the gasket sit for approximately 10
minutes until the sealant becomes “tacky”.
4. Snugly fit and install new gasket.
6.4 Wall Insulation
The oven wall insulation ensures that the outer skin temperature is within acceptable
limits. It is important to maintain the oven wall insulation in good condition; otherwise the
operating temperature will cause the following problems:
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