M&C TechGroup SP2400-H Operator's manual - Manual (Page 38)

38 Gas sampling and gas conditioning technology 2-1.1-ME
 Replace protection shield.
 Open (if available) ball valve.
In order to change prefilters, the entire probe unit must be removed from the process. The prefilters
can be cleaned to an extent depending on the manner of soiling mechanicaly or in a ultra sonic bath
and can used again.
N O T E !
Prior to carrying out maintenance work on electrical parts, mains
voltage should be disconnected from all poles!
This also applies to any external control circuits which may be
connected.
17.2
CHANGE OF THE OPTIONAL PREFILTER
For changing the prefilter the complete probe unit has to be dismounted and removed out of the pro-
cess :
W A R N I N G !
When working during operation:
High surface temperatures!
Touching the surfaces can result in burns. Wear protective gloves
and any unauthorized access to the probe must be made impossi-
ble !
 Loosen the 4 flange nuts and remove if possible the fixing screws (not for prefilters V12...,
adapter flanges or SP30-H....)
 Extract probe with prefilter out of the process.
 Let prefilters cool and than screw out resp. for prefilters V12... remove the 4 flange nuts on
probe side (see also Fig. 6).
 Change or clean prefilter.
N O T E !
Prefilters depending on type and degree of contamination can be
partly cleaned mechanically or in an ultra sonic bath and reused.
17.3
CHANGE OF HEATING CARTRIDGE AND THERMOSTAT
W A R N I N G !
Before effecting any maintenance work, the mains voltage has to
be switched off on all poles! This is also valid for eventually con-
nected alarm or control circuits.
 Switch the probe free of tension (switch off the mains voltage) and let it cool down.
 Open the toggle type fasteners and take off the protection cover.
 Take off the lid of the electrical connection box after having unfastened the 4 screws.