Membrane Replacement; Micron Final Filter Replacement; Fuse Replacement - Thermo Scientific 1403 Series Operating Manual

Maintenance and Servicing

Micron Final Filter Replacement

Membrane Replacement

It is recommended to replace RO carbon prefilter when replacing the RO membrane. Refer to the
Carbon Filter Installation
1. Turn off the Thermo Scientific TII and disconnect it from the power supply.
2. Disconnect inlet feed water connection.
3. Locate the RO membrane(s) inside the left door (see Fig. 9).
4. Remove the old membrane(s) by disconnecting the reject and product tubing from the top of the
membrane and the feed water connection from the bottom. See
tubing removal instructions.
5. Install new membranes per the
6. Reattach power cord and feed water supply.
7. Reset the membrane timer by following the
manual.
8. Proceed per
Micron Final Filter Replacement
Replace the 0.2 micron final filter whenever any of the following conditions occur: the product water
flow rate is reduced, when you experience bacteria break through, when cartridges are replaced, or
when system is sanitized. The 0.2 micron final filter is shipped assembled with a bell. To replace the
0.2 micron final filter assembly:
1. Remove the old 0.2 micron final filter assembly by turning it to the left to unscrew it from the
dispense valve.
2. Remove the new 0.2 micron final filter assembly from its bag and insert it into the dispense
valve. Gently tighten, turning the filter to the right.
3. Open the dispense valve and flush at least 3 liters of water through the 0.2 micron final filter.

Fuse Replacement

1. Turn off the Thermo Scientific TII and disconnect it from the power supply.
2. Pull out the fuse drawer located in the power entry module.
3. Remove old fuses and replace with fuses of the same type and rating.
(See Replacement Parts section.)
4. Replace fuse drawer.
5. Reconnect the unit to the power supply.
Operate normally.
6.
5-4 TII Water System
section of this manual.
RO Membrane Rinse
Note It is suggested that PTFE tape be applied to the threads of the 0.2 micron final filter
to ensure a tight seal.
RO Membrane Installation
Procedures to Reset Routine Timers
section earlier in this manual.
Feed Water Connections
section of this manual.
section of this
for
Thermo Scientific