7.8 6
Monthly
a.
Isolate the electrical supply & remove the cover.
b.
Internals should be clean & dry.
c.
Insure terminals are intact & secure.
d.
Heating element insulation resistance to be at least 2 megaohm.
e.
Refit cover with new gasket or “O” ring if required.
f.
Earth continuity must be maintained between all earth points & main structure.
7.9 Annually
a.
Check all above.
b.
Check for element failure or low insulation resistance.
c.
Check operation of level switch by draining & re-filling unit with electrical fully isolated.
7.10
Only Exheat Limited or its approved agent to carry out element or level switch replacement in hazardous area
heaters otherwise the certification will be invalidated.
7.11
If heater is being left unused for a period greater than 3 months carry out 8.8 above.
8.0 Marking
8.1
II 2 G/D
Ex d IIC T4 to T6
9.0 Certification
9.1
LCIE 01 ATEX 6027 X
4