ESPEC CORP | Products FAQ | Gravity Oven LH/LHL/LHU/LU : When an Alarm Occurs

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Temperature and Humidity Cabinet & Low Temperature Cabinet(LH-113,LHL-113,LU-113,LHU-113):When an Alarm Occurs

DANGER

ELECTRIC SHOCK! Before intervening with power circuits, shut OFF primary power supply at the primary switch. Working with primary power supply ON runs the risk of electric shock.
Shut OFF power from the main power switch BEFORE detaching the electric parts compartment door.

This section explains how to deal with trouble that trips one of the oven's self-checks. The buzzer can be silenced by pressing any of the keys, but follow the below procedure as best possible.

When a 1st Degree Alarm Occurs

Procedure	1.	Press either the or keys to silence the buzzer.

	2.	Check the alarm code (AL XX)on the display.

	3.	If the oven is running, press the OPER./STOP key to stop the oven.

	4.	If control power is ON, press the POWER key to shut OFF power to the instrumentation.

	5.	Set the main power switch in the OFF position.

	6.	Remedy the trouble as explained in the Alarm Tables on the following pages.

	7.	To resume operation, set the main power switch in the ON position, press the POWER key and then press the OPER./STOP key in that order.

When a 2nd Degree Alarm Occurs

Procedure

When the cause of the trouble persists

	1.	Check the alarm code ( AL XX ) on the display.

	2.	Press either the or keys to silence the buzzer.

	3.	Remedy the trouble as explained in the Alarm Tables on the following pages. When the cause of the trouble has been cleared, normal control is automatically restored. The alarm code is cleared.

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