104
8024493/AE00/V1-0/2020-09| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-2K
Subject to change without notice
12
MAINTENANCE
Take suitable measures to prevent dust from entering the control unit
enclosure when the door is open.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Make sure that the environment allows the door of the control unit to be opened and
open it after the waiting time has elapsed.
3
Open the MCUDH with the control cabinet key.
4
Loosen three nuts (1) and remove transparent protective cover (2).
Fig. 50: Illustrations, power supply replacement
5
Disconnect power plug (3) and DC plug (4) from the power supply unit.
6
Use a screwdriver to unlock the hat rail lock of the power supply unit (pull the black
plastic latch downwards) and remove the power supply unit from the hat rail.
7
Plug the new power supply unit onto the hat rail.
8
Connect power plug (3) and DC plug (4) to the power supply unit.
9
Place the protective cover on the three stud bolts and fasten it with the nuts.
10
Close the MCUDH Ex-3K with the control cabinet key.
11
Put the complete device back into operation (switch on voltage and check measured and
status values).
12.6.16
Exchanging the RS485 Interface module
Exchange criterion: In case of damage.
Ex-condition:
Replacement can be carried out in the Ex-area when the absence of a
potentially explosive atmosphere has been verified with a gas warning
device.
Take suitable measures to prevent dust from entering the control unit
enclosure when the door is open.
Work steps:
1
Disconnect the entire device (control unit and sender/receiver unit) from the power
supply.
2
Make sure that the environment allows the door of the control unit to be opened and
open it after the waiting time has elapsed.
3
Open the MCUDH with the control cabinet key.