Oil Sump Heater - GEA Bock EX-HG88e Series Assembly Instructions Manual

8| Accessories
8.2 Oil sump heater (retrofit kit item no. 81193)
The explosion-protected heating element in self-limited design, including immersion sleeve and ap-
proved cable fitting (Es d), is supplied with an electrical supply line of approx. 3.2 metres. Installation
in the terminal box of the compressor is already prepared.
The connection line for the heating element must be laid permanently and mechanically protected.
During assembly and installation, the requirements of EN 60079-14 and EN 60079-17 must be
observed. In addition, nationally applicable laws, safety regulations (BetrSichV) or provisions must
be observed.
ATTENTION The supply line length of 3.2 m must not be shortened under any
Additional installation instructions as well as the assembly / disassembly manual can be referred to in
the enclosed documentation of the kit.
Conductor cross-section of the supply line: 3 x 1.5 mm
Outside diameter of the supply line: 8 mm.
Operation: The oil sump heater must be operated as a standstill heater, the appropriate control must
be performed by the equipment manufacturer / installer.
ATTENTION To limit the heat resulting from abnormal earth-connection and
circumstances during installation (integrity of protection against
arcing or flame penetration within the cable insulation).
earth-conducting current, the following protective equipment
must be installed in addition to excess-current protection:
• In a TT- or TN system, a residual current protection device
(RCD) must be used with a rated triggering current not exceeding
100 mA. Residual current protective equipment with a rated
triggering current of 30 mA is preferable. The maximum switchoff
time of the equipment for must not exceed 5 seconds for rated
triggering current and 0.15 seconds in case of five-times the rated
triggering current.
• In an IT system, an insulation monitoring device must be used to
check whether the feed is switched off as soon as the insulation
resistance drops to 50 Ω per volt of rated voltage.
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