2017_E_TYPE-HL.doc Page 15 of 55 24-Oct-2017
2.4 Flame Safety Controls
The process chamber and oxidizer chamber gas burners utilize electronic flame safety
controls based on the flame scanner principle. When the gas burner pilot ignites, the flame
safety scanner detects the ultra-violet rays.
The scanner then allows the burner’s main gas valve to open. The flame failure response
in this safety system is 0.8 seconds. The safety system should generate 5V DC. Voltage test
points are located in the flame safety module.
Note: If the pilot flame is not established within 4.0 seconds (trial for ignition period), the
flame safety lockout will be activated.
2.5 Optional Controls
Guspro ovens are built to CGA & AGA specifications. Operating and safety controls
meet or exceed Federal and local codes.
The purchaser should check with the insurance broker and the on-site policy regarding
the installation of fuel fired equipment. Additional controls for compliance with Factory Mutual
(FM) and Industrial Risk Insurers (IRI) standards are available at an additional cost.
2.6 Chart Recorder
A single or dual pen circular chart recorder may be ordered with the oven. The chart
recorder can be used to log the process chamber and oxidizer chamber temperature profiles
during the daily cycle.
Note: Single pen chart recorders are also available. They are normally used to record
oxidizer chamber temperatures.
2.7 Core Temperature Controller
A core temperature controller is available as an option with all ovens. This is an
additional safety feature that is mostly utilized in the electric motor rewind business.
The core temperature controller is connected to the part via a thermocouple. It senses the
part temperature and also concurrently records the part temperature on a chart recorder.
If the part temperature exceeds a critical limit, the process chamber burner is shut off and
will activate the OTS system if required. The core temperature controller serves to further
protect valuable parts.
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