Market Forge Industries STM-E, Руководство пользователя, Страница: 26 / 36

24
SECTION 5 ASSEMBLY
THE TIMER
The Sterilmatic is put into operation with the manual setting of the timer. With the setting of
the timer, an electrical current is directed to the pressure control. The current energizes the
pressure control, which activates the contactor coils to cause a current flow to the heating
elements. When the cylinder pressure reaches 13 to 13.5 PSI, the timer motor and pilot light
are energized. At the end of the cycle the timer will cut off the flow of electricity to all the
components except the exhaust, the exhaust solenoid and the timer motor. They will revert
back to their original deactivated state. The timer motor and pilot light will continue to be
energized after the timed sterilizer cycle has been completed and for two additional minutes.
Only after this will the timer and white pilot light is de-energized. If the timer fails to operate
the Sterilmatic, replace it. The timer is replaceable only as a complete unit as factory repairs
to it would not be practical in the economical interests of the customer.
THE STEAM PRESSURE GAUGE
The Steam Pressure Gauge registers the pressure of steam, which is within the sterilmatic
sterilizing chamber. To replace this unit, it is necessary to disconnect the copper tubing and
to remove the two nuts holding the gauge framework in place
THE SAFETY VALVE
The Safety Valve is factory set to automatically open and exhaust excess steam from within
the sterilizing cylinder, thereby assuring that operating pressures remain within safe limits.
The lever action of the safety valve 'must be free to operate unrestricted at all times. If the
Safety Valve should leak continually with a pressure build-up or should it cause an
interruption on a sterilizing cycle prematurely (below 124° Centigrade on the temperature
gauge), it must be re- placed. However, the temperature gauge should first be checked for
accuracy.
THE FLUE
The Flue serves as a protective shield for the steam trap safety valve, exhaust valve, as well
as a mounting base for the control panel. The pressure gauge, dial thermometer, exhaust
valve switch and timer, protrude through the control panel. The
Flue cover may be removed to allow more room for servicing the
control components. The control panel face may then be removed
by unscrewing the sheet metal screws, which mount it to the Flue.
THE EXHAUST SOLENOID VALVE
The exhaust solenoid is normally closed and only opens at the
end of the cycle when it is energized.