R Series 30934 V2
Operating Manual Page 16
www.grantinstruments.com
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 Cleaning
Regular maintenance of the R unit is important to allow the unit to perform to its
specification and is required for warranty validity.
The removable grille enables easy access to the condenser for cleaning. Cooling power
will be reduced if the fins become clogged with dust. The condenser fins (see section
5.2.3) should be examined monthly and, if necessary, use a vacuum cleaner nozzle and
soft brush to remove the dust.
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
9.2 Fuses
Fuse replacement should only be carried out by a competent person.
The refrigeration unit has externally accessible fuses that can be changed by a qualified
technician. Disconnect the unit from the power supply socket. Remove the IEC power
plug from the rear of the unit. Press down the fuse drawer catch and pull out. Check
fuses and if necessary replace. Push the fuse drawer back in until fully engaged and
replace the IEC plug.
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