How To Prevent Algae And Bacteria; Warranty Information; Maintenance And Service; Routine Maintenance - Grant Optima TX150 Manual Del Operador

7.3

How to prevent algae and bacteria

Water baths provide the ideal environment for the growth of micro-organisms. If left
uncontrolled the growth of these organisms can result in a range of serious problems and
health risks from pathogenic bacteria.
The growth of algae on the surface of parts will cause biofouling which can reduce
performance. Micro-organisms that produce acidic metabolic by-products can cause bio-
corrosion by depolarisation of metal surfaces.
There are a number of biocides available on the market.
8.0

Warranty information

When used in laboratory conditions according to this manual, this product is guaranteed
for THREE YEARS against faulty materials or workmanship.
Extended warranty for years four and five can be purchased by contacting our sales
department at labsales@grantinstruments.com.
9.0

Maintenance and service

9.1

Routine maintenance

The over-temperature cut-out on the TX150/TXF200 should be checked periodically by
turning the over-temperature dial with a screwdriver anticlockwise until the alarm is
triggered. The unit will sound a buzzer and "Overtemperature Alarm" will be shown on
the display. The over-temperature dial should then be turned to 10°C above liquid
temperature and the TX150/TXF200 powered off and back on to confirm that the cut-out
can be reset correctly. If the alarm is triggered when the value indicated on the over-
temperature dial is more than 10°C below the current temperature as indicated by the
main display, then the unit should be checked by a competent person.
The float liquid level protection should also be checked periodically by lowering the level
of liquid in the bath and noting that the "Low liquid alarm" is triggered with the top turn of
the heater still immersed in the liquid. The float should also be checked periodically to
ensure no limescale, dirt or debris could impede the operation at low liquid level.
When hoses are fitted to the pump they should be inspected periodically and replaced as
necessary to avoid hose failure.
No other routine maintenance is required.
9.2

Cleaning

Clean the outside of the equipment with a damp cloth, using water only. Do not use
chemical cleaning agents. Before using any other cleaning or decontamination method,
check with Grant Instruments or your local representative to make sure that the proposed
method will not damage the equipment. Scale on immersed parts can be removed using
chemical de-scaling products designed for use on equipment that has metal parts.
De-scaling products may be toxic and manufacturer's instructions should
always be followed
30424 V6
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TX150 & TXF200
Operating Manual