Market Forge Industries STM-EX Service Manual download pdf (Page 3)

SEPTEMBER 26, 2014 3 STM-E, STM-EL, STM-EX & STM-ELX STERILIZERS

DOOR ASSEMBLY & ADJUSTMENT

STERILMATIC DOOR ASSEMBLY

The Door of the Sterilmatic has been engineered to es-

tablish a positive method of sealing the steam pressure

within the sterilizing cylinder. As steam pressure builds

up within the cylinder, the door seal will tend to become

more positive.

However, the door should be adjusted to make a good

initial seal between the door gasket and the door opening

without the added assistance of internal cylinder steam

pressure with the simple action of securing the door han-

dle down in a locked position, the door gasket should be

sufciently compressed against the door opening, all the

way around to prevent any steam leakage from occurring.

Figure 1

DOOR ADJUSTMENT

The Door Adjustment is Located in the Fulcrum Casting

at the base of the door opening. This adjustment employs

the use of a screw and locknut in order to adjust the Steril-

matic Door to a tighter closed position (to prevent steam

from leaking by the door gasket as pressure builds up), it

is necessary to loosen the locknut and back off the screw

at least one-quarter of a turn and re-tighten the locknut.

Figure 2

THE DOOR GASKET

Keep the gasket clean. With normal closing and locking

of the door assembly, a steam-tight seal should be made

between the door gasket and the door opening. This seal

cannot be maintained if particles of foreign matter are al-

lowed to accumulate upon either of the contacting sur-

faces.

If there is leakage by the door gasket before a steam

build-up within the steam chamber and leakage does not

stop when the sterilizer reaches sterilizing temperature

and pressure than regard the door assembly as improp-

erly adjusted. A re-adjustment must then be made of the

seal adjustment door screw.

To change the door gasket, remove the entire door as-

sembly as a unit. Discard the old gasket, replace it with

a new one (no cement is required), and reinstall the door

assembly. Make an operational check for leakage and ad-

just the door, if necessary.

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Market Forge Industries STM-EX Service Manual Page 3

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