Despatch S Type - Manual (Page 91)

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· With the oven cold and the front plumbed the door flanges should make contact with the
oven front and the vertical center door lap should make even contact top to bottom. If not
check to see that the hinges are adjusted properly and tightened down, make sure the hinge
pin centerlines vertically fall on the same centerline. This can be measured with a plumb line
off the front comparing the hinge pin centers. If the hinges fall off a common centerline the
hinges must be shimmed individually.
·
Checks to make sure latches are mounted properly. The small door assemblies have only
one latch assembly at the top of the doors. Make sure the latch is adjusted and shimmed
properly so the bottom of door is not forced out. Latch should be adjusted for easy opening
of doors and not overly tightened. Large door assemblies have two latch assemblies; one at
the top and one at the bottom with a floor strike anchored into the factory floor. Latches
should be adjusted for easy opening of doors and not overly tightened to cause the doors to
bow and cause a gap or uneven contact where doors meet at the center of the doors.
·
With the oven cold, from inside the oven check the internal perimeter oven front seals and
the center door seal for complete sealing against the door perimeter. Seals should not be
over compressed to cause total flattening of seals. Seals should form a slight oval. Cycle
door 6 to 8 times. Since seals are new, they will compress some and may need
readjustment, especially the inside front perimeter seal. Double check the outside door drag
seals (all designs) to make sure factory floor contact is made. Any adjustments to doors or
seals require that you recheck all seals again for proper sealing.
·
Oven pressure - how positive is the oven? Excessive positive pressure could result in
warpage of the doors and/or oven front. This problem would normally show up at the top of
the door where the pressure and heat have more impact due to the free span of the wide
opening and where thermo expansion would be most noticeable. Generally, if a sealing
problem exists in the lower areas at the sides of the door, the problem is due to the door not
sealing or barely sealing from the start, and the problem just worsens as you increase oven
temperature or pressure. Once again, if the oven front or doors are not properly aligned it
will be noticeable where the doors meet at the center vertical lap showing an uneven
gap/contact from top to bottom of doors possibly preventing doors from properly sealing.
If you have any further questions, or you do not understand the theory of the door design or the
explanations above, please do not hesitate to give us a call. Feel free to contact us thru our
1-800 number found in the manual.