Carbolite Gero GPCMA 174, Installation And Operation Instructions Manual

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11.3 Cleaning
Note: Disconnect the product from the electrical supply before carrying
out any maintenance procedures.
l
With the product switched off, cold, and electrically isolated from the mains, wipe
over surfaces using a damp cloth, wrung almost dry.
l
DO NOT use solvents.
l
If necessary, vacuum out the inside of the product to remove any dust or minor
debris and dispose of any material removed, in accordance with local regulations, at
an approved disposal facility.
Note: Care must be taken to ensure that no moisture enters the furnace
or makes contact with any electrical components.
11.4 Safety Switch
When correctly functioning, the safety switch will isolate all live conductors (live and
neutral connections) within the heating element circuit(s) when the product door is
opened. The safety switch should be checked regularly to ensure that this occurs.
The safety switch should not fail under normal working conditions, however rough
handling, exposure to corrosive materials/ environments, or exceptionally frequent
use, could compromise the safety system.
Weekly check:
The following check can be carried out by a general operator:
l
On the temperature controller, set a safe temperature above ambient. The heater
lights should illuminate.
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Open the door and check the heater lights. They should no longer be illuminated.
If the heater lights remain illuminated when the door is open, discontinue use and
contact Carbolite Gero Service.
Annual check:
The following checks should be carried out by a qualified electrician, as specified in the
"Maintenance Schedule" section of this manual:
l
Remove the element access panel and take a voltage measurement from the heat-
ing element terminals. Do not attempt to take a reading from the heating element
itself as surface oxidation will give an unreliable contact.
l
Ensure that power to the heating elements is switched off when the door is opened.
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