AWH Tanko RT, Руководство по эксплуатации и установке, Страница: 80 / 132

ATEX Retractor System TANKO-RT/-RTS
70/121 Translation - Operating/installation instructions 2020/01 6 Start-up
NOTE ON EXPLOSION PROTECTION
Temperatures over 70 °C on the pneumatic cylinder in the area of the limit switch result
in the limit switch malfunctioning.
If this is not observed, the explosion protection could be disabled.
 If the cleaning medium and/or container temperatures exceed 70 °C, the supplied
resistance thermometer must be installed on the pneumatic cylinder, see
Figure 5.2-11: Resistance thermometer position
.
 Connect, calibrate and evaluate the resistance thermometer according to the
manufacturer's instructions.
 The signal that corresponds to a temperature of 66 °C must be set as a limit value.
All values from 66 °C must trigger a fault and the retractor system must be placed in
a secure state.
 The cause of the temperature increase must be determined and solved immediately.
 Before reactivation and confirmation of the fault, all limit switches and all throttle
check valves (see
Figure 5.2-1: Device Interfaces ) must be replaced by original spare
parts.
NOTE ON EXPLOSION PROTECTION
The device must have a flow resistance between the piston rod and the housing.
If this is not observed, the explosion protection could be disabled.
 A flow resistance of ≤ 1 MΩ between the piston rod and the housing must be
guaranteed on the TANKO-RT/RTS. This must be ensured by appropriate
measurements (see
Figure
7.4-1
maintenance point G).