1. Safety
8
PNEG-1901CE
CE Compliant Downwind Centrifugal Heater Installation and Operation
Electrical Safety
Equipment shall include:
1. Fuse protected main power supply.
a. The electrical supply should include earth leakage protection, eg Residual Current Device (RCD)
or Residual Current Circuit Breaker (RCCB), to provide automatic disconnection in the event of
a fault.
2. Lockable main safety disconnect.
a. Disconnects all electrical power.
3. Lockable motor service disconnect.
a. Adjacent to each heater.
b. Disconnects all power to the heater.
4. Emergency stops.
a. Stops all equipment immediately when pressed.
b. Must remain engaged until manually disengaged.
c. Equipment shall not immediately re-start when the emergency stop is re-set.
5. Door safety interlocks - Where doors provide
access to dangerous machinery and/or atmosphere.
a. Immediately stops and prevents re-start of all equipment when the door is open.
b. Equipment shall not immediately re-start when the door in closed.
c. Safety switches shall be SIL3 in accordance with IEC62061:2005.
d. Safety circuits should be Category 3 in accordance with EN954-1:1997 or PLc in accordance
with ISO 13849-1:2006.