7.4.16
Mains Electrical Lead and Plug
With product switched off at the mains and cold visually inspect the electrical lead and
plug and look for signs of damage or deterioration. Repair or replace if necessary.
7.4.17
Gas Atmosphere Equipment
If gas flow meters or solenoid control valves have been fitted starting with the product
switched off and cold test the meters are registering and solenoid valves switches on
and off the gas flow correctly when operated normally.
The equipment providing and regulating the supply of gas will normally have been
supplied by others.
Service it in accordance with the manufacturer’s instructions.
7.4.18
Data Plate and Safety Labels
With product switched off and cold visually check that the thermocouples tips have not
suffered that these are fitted where required and legible. Replace with new ones if
necessary.
7.4.19
Safety Guards and Covers
With the product switched off and cold visually check all safety guards are fitted and
serviceable and if safety switches are fitted that they operate correctly and have not
been by-passed.
Check that all covers over electrical controls and similar are securely fitted.
7.4.20
Electrical Checks
This can only be done by trained operatives.
It would only normally be done on an extended time basis or after a major
refurbishment.
A specific test procedure for each oven / furnace model would have to be established
first.
Voltage and Current
With oven / furnace cold switch ON and measure the incoming voltage and current on
each phase.
Confirm agrees with Data Plate fitted.
General Electrical Inspection
With oven / furnace switched off and cold and electrically isolated from the mains
supply remove the control panel cover and panels over the heating elements and other
controls.
Visually inspect the cabling, connections and electrical devices looking for signs of
over-heating, cable-chaffing or general deterioration. In particular check for loose
connections on heating elements or high power switching devices that could lead to
local overheating.
If any such problems are found identify the cause and repair or replace as necessary.
Note: Earth Leakage
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