Ecotech Serinus 40 - 6.4.10 Battery Replacement; 6.4.11 Ozone Generator Maintenance

Service
Page 107
6.4.10 Battery Replacement
The replaceable battery (BT1) on the main controller board may need to be replaced. If the clock
resets or does not increment when the power is off, then the battery is going flat. The battery should
be replaced with the correct type of battery, a 3V Lithium CR2025 type should be used and installed
correctly as follows:
1. Turn off the instrument, open the lid and remove the 2 screws holding down the main controller
PCB.
2. Lift the PCB up to its open position. The battery (BT1) is located toward the front of the PCB.
3. Using a small flat screwdriver, lift the metallic clip holding the battery whilst sliding the old
battery out.
4. Now place the new battery in with the positive (+) side facing up.
5. Close the main PCB and return the screws. Close the lid again.
6. Turn on the instrument and set the clock time and date in the General Settings Menu (refer to
Section 3.5.9).
6.4.11 Ozone Generator Maintenance
Ozone production in the Serinus 40 is achieved via a corona discharge method. Ambient air is drawn
through a DFU (disposable filter unit), a Nafion dryer and then into the ozone generator and high
levels (≈6,000ppm) of ozone are produced. This reactive gas can deteriorate the Viton O-rings over
time that are found in the ozone generator assembly (pre ID11-1040) part number H011107.
CAUTION
Risk of electric shock. Do not power assembly during
maintenance procedures.
The Viton O-rings require replacement at least every 12 months. More recent ozone generators use
Teflon seals which virtually eliminates the need for regular maintenance. Ecotech has used Teflon
seals on all instruments with serial numbers after ID 11-0140. If your instrument has an ID number
before this, follow the procedure outlined below to change the O-rings.
O ring replacement procedure for ozone generator (pre ID 11-0140)
1. To remove the ozone generator assembly from the instrument chassis. Firstly, undo the two
captive screws found on top of the ozone generator assembly.
Figure 62 – Ozone generator assembly