74
8024250/18HT/V2-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | ZIRKOR200 Ex-G
Subject to change without notice
8
MAINTENANCE
All fuses listed in the Table are available as a spare parts set under the SICK Part No.
2089370 E-SET FUSES.
8.6.2
Replacing the filter head
▸
To replace the filter head, loosen the locking screw on the filter head.
▸
The filter head can now be unscrewed and removed.
▸
Screw the new filter head to the measuring probe.
▸
Before tightening the locking screw again, align the V-shield towards the flue gas flow.
8.6.3
Replacing an analyzer unit
Fuse
Rated current
SICK Part No. Type
Task
1 F3
0.5 A
2116785
Slow 5x20 mm glass
tube fuse
To protect the
electronics
2 F4
0.5 A
Slow 5x20 mm glass
tube fuse
To protect the
electronics
3 F5
1 A
Medium slow 5x20 mm
glass tube fuse
To protect the 115 V AC
solenoid valves as well
as the test and
reference air pump
5 F1
2.0 A (230 V AC)
4.0 A (115 V AC)
Slow 5x20 mm ceramic
tube fuse
To protect the entire
system
6 F2
4 A
Medium slow 5x20 mm
ceramic tube fuse
To protect the
measuring probe
heater
WARNING: Danger of explosion through breaching the flameproof enclosure
An Allen screw, damaged due to incomplete loosening during filter replacement or a
loose Allen screw can damage the flameproof enclosure by damaging the flameproof
joint and thus lead to an explosion.
▸
Loosen and tighten the hexagon socket screw completely.
▸
Replace damaged hexagon socket screws.
WARNING: Danger of burns on hot components which are in the process gas
The temperature of the filter head and all parts in the process gas is 150 °C to 800 °C
(302 °F to 1472 °F) during operation. Directly touching the parts for disassembly or
maintenance causes serious burns.
▸
Use heat protection gloves when removing the measuring probe.
▸
Switch the electronics supply voltage off before removing the measuring probe.
▸
Place the analyzer unit in a safe, protected area after removal and wait until the
measuring probe temperature has cooled down to the ambient temperature.
WARNING: Risk of burns
The temperature of the filter head and all parts in the process gas is 150 °C to 800 °C
(302 °F to 1472 °F) during operation. Directly touching the parts for disassembly or
maintenance causes serious burns.
▸
Use heat protection gloves when removing the measuring probe.
▸
Switch the electronics supply voltage off before removing the measuring probe.
▸
Place the analyzer unit in a safe, protected area after removal and wait until the
measuring probe temperature has cooled down to the ambient temperature.
