Uv Lamp Replacement; Resetting Routine Timers; Prefilter, Mps, Carbon, Membrane, Pack Timers; Reservoir Vent Timers - Thermo Scientific 1403 Series Operating Manual

UV Lamp Replacement

The ultraviolet lamp requires periodic replacement. Lamp life will vary according to the number of
times the Thermo Scientific TII is turned on and off. Lamp life is based on the Thermo Scientific TII
being operated in the normal recirculating mode during regular working hours and then placed in the
Standby mode during off hours. Every fourth time the pump goes on in the Standby mode, the UV
light will go on. If the Thermo Scientific TII is cycled between the RUN and STANDBY modes
during the workday, this will result in a shorter lamp life. Therefore, it is recommended that the
Thermo Scientific TII be left in the normal RUN mode during regular working hours.
To replace the UV lamp, see

Resetting Routine Timers

Procedures to reset all routine timers follow.

Prefilter, MPS, Carbon, Membrane, Pack Timers

These timers record service time to ensure the reliability and to reduce the risk of bacterial
contamination. The Prefilter, MPS, Carbon, Membrane and Cartridge Pack Timers must all be reset
prior to initial operation and after cartridge replacement. See

Reservoir Vent Timers

The Reservoir Vent Timer will alert the user when the reservoir vent filtering capacity has expired,
six months from initial use or when the timer has been reset. The user must reset the Reservoir Vent
Timer each time the Ventgard filter element (25001-DB) is replaced.

System UV Timer

The user must reset the System UV Timer each time the UV lamp in the Thermo Scientific TII is
replaced. This will reset the UV timer for approximately six months calendar time.

Reservoir UV Timer

The user must reset the UV Timer each time the UV lamp in the Thermo Scientific TII storage
reservoir is replaced. This will reset the UV timer for approximately one year calendar time.

Sanitization Timer

The Cleaning Timer will automatically reset itself after a successful cleaning procedure. If the user
decides to manually reset the cleaning timer, follow procedure in table below. This will reset the
cleaning timer for approximately one year calendar time.
Thermo Scientific
UV Lamp Installation
Note When lamp is burned out or disconnected, the System Alarm LED will illuminate.
Press MENU and scroll to System Alarm for details.
procedure in this manual.
Routine Care Alerts
Maintenance and Servicing
Resetting Routine Timers
for more details.
TII Water System 5-5