Maintenance And Servicing; Cartridge Replacement - Thermo Scientific MEGA-PURE 680 D440046 Series Operation Manual And Parts List

Automatic deionizer
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Maintenance and Servicing

Cartridge Replacement

If the system has been idle for a period of time, the red
change cartridge light may have come on. Place the
Mode Switch in the PURGE position and run 1-2 liters of
water through the system. Place the Mode Switch back in
the RUN position. If the red light does not go out, the
deionization cartridge needs to be changed. Replace as
follows:
1.
Disconnect power cord.
2.
Turn drain valve to "open" then turn water sup-
ply valve to "off".
3.
When water stops flowing from the drain hose,
loosen the bottom knob, remove the deioniza-
tion cartridge and discard.
4.
Check gaskets and replace if necessary.
5.
Replace cartridges per steps 2 & 3 under
Cartridge Installation.
6.
Refer to Operation Sequence for start-up.
17

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Mega-pure 681 d440066 series

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