2017_E_TYPE-HL.doc Page 41 of 55 24-Oct-2017
• Heat leakage would increase the oven heat up time and the ambient temperature.
• Increase fuel consumption, thus increasing operating costs.
• Reduce the life of the 12-gauge hot rolled steel oven wall.
If a section of the wall insulation is so damaged, a patch of insulation should be installed
to repair the wall. Insulation is available in 24" board and 36" board sections.
6.5 Firebrick Soaps
The function of the firebrick soaps is to confine the process chamber heat input within the
firebox. This helps to spread the flame evenly (thus the heat) from the rear of the firebox to the
front, thus eliminating cold spots.
Missing or damaged firebrick soaps would cause the process burner flame to flicker from
the rear ports in the process chamber firebox. This can cause uneven heating from under the
cart. Excess flame “licking” on the cart may cause distortion, warpage and damage to parts.
A supply of firebrick soaps is sent with each oven. If they deteriorate over time, a supply
of soaps should be obtained from the factory and placed in the vacant flame ports.
The normal practice is to install firebrick soaps into all the flame ports starting from the
back of the oven. The last two flame ports in the firebox closest to the door are left open. Figure
4.1 depicts placement of firebrick soaps on ovens with centre-fired fireboxes.
6.6 Lubrication of Loading Cart Wheels
Most models have a cart that can be pulled in and out of the oven for loading and
unloading. The wheels on the loading cart assembly should be lubricated from time to time.
This ensures that:
• The cartwheels function smoothly.
• Wear and tear on the wheels is minimized.
A special high temperature lubricant is recommended for the sleeves in the cartwheels.
Supplies can be ordered from the factory.
Note: When an oven is used on a continuous basis, the cart wheels should be greased daily.
When used occasionally, the cartwheels should be greased once a week.
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