Michell Instruments XZR500ST, Руководство пользователя

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XZR500 User’s Manual
Michell Instruments 37
MAINTENANCE
4.3 Replacement of the Furnace
• Remove the probe inner tube ( Figure 4 (23)).
• Turn off the analyzer and disconnect the power lead.
• Wait until the furnace and the sensor housing cool down (around 45 minutes).
• Remove the cover of the sensor housing.
• Disconnect the cable.
• Disconnect all the wires from the MSRS, the furnace and the connector block
(
Figure 4 (11)).
• Remove the MSRS ( Figure 4 (5)).
• Remove the sealing head ( Figure 4 (3)).
MSRS
O ring
Sealing
head
• Clean the sealing head if necessary.
• Loosen the probe mounting plate
fastener ( Figure 4 (19, 20)).
• Unscrew the corner plate (2 CHC
screws M6).
• Draw back the mounting plate.
• Remove the furnace.
• Place the new furnace (you may
have to enlarge the holes in the
corner plate to allow the furnace
wire’s terminals to pass).
• Replace the stop washers.
• Replace the corner plate.
• Bring the attachment plate close to the corner plate.
• Fasten the corner plate by pushing it down so that the lock washers lay against
the furnace upper cheek.
• Tighten up the probe mounting plate fastener.
• Re-insert the clean sealing head with the new MSRS (Ref 204 011) and new
o-rings (Ref 108 006) (CAUTION: the head of the MSRS (1) has to stop
against the bearing of the sealing head body (3)). (See Figure 16.)
• Connect the MSRS and the cable according to the diagram
(Figure 16).
• Replace the cover.
• Power up the analyzer.
• Wait for one hour.
• Re- fi t the probe inner tube.
• Set self-cleaning (0.10 code).
• Wait for a few hours before calibrating the analyzer (see Section 3.3.3).