T&D Martindale Electric TEK500 Instructions

3.4. After the microwave leakage test is found to give a satisfactory result, the following procedure can be used as
a simple functional test to assess the microwave heating power of the oven.
This functional test should be carried out with the microwave oven connected to its rated power source.
Fill the polypropylene beaker (supplied) with 275ml ± 15mls of tap water at a known temperature and place it in
the centre of the lowest shelf in the oven. Use the thermometer (supplied) to measure the initial temperature
accurately. Record the actual water volume and the Initial Temperature accurately.
DO NOT LEAVE THE THERMOMETER IN THE BEAKER.
The oven should then be operated at its maximum microwave power setting for 90 seconds.
FOR COMBINATION OVENS, WITH RADIANT HEATERS FOR ROAST OR BAKE SETTINGS, DO NOT RUN
THE OVEN AT RADIANT HEAT SETTINGS: USE MICROWAVE POWER ONLY.
(Note, The heating time is not critical, but must be recorded accurately: for an oven with an imprecise clockwork
timer, use a stopwatch or wristwatch with a second-hand to establish the duration of the test).
Immediately after the 90 seconds microwave heating episode, open the door, give the contents of the beaker a
very brief stir using the thermometer, then measure the final temperature of the water.
Determine the rise in temperature from:
Temperature Rise = (Final Temperature) - (Initial Temperature)
The microwave heating power of the oven can be estimated from the following formula:
Microwave Heating Power (Watts) = 4.19 X (Water Volume in ml) X (Temperature Rise)
(Note: This formula is simplified for convenience. Result should be rounded down to nearest 50W).
3.5. At the end of all testing, ensure that the TEK500 has been switched OFF, before returning it to its carry case.
Calibration
The recommended calibration interval is 12 months. Martindale Electric will carry out routine calibration (on a
chargeable basis) if the instrument is returned, carriage paid, to the address on the final page of this document.
Alternatively, a chargeable collection and return service is available.
Repair & Service
There are no user serviceable parts in this unit. Return to Martindale Electric if faulty. Our service department will
promptly quote to repair any faults that occur outside the warranty period.
Storage Conditions
The Tek500 should be kept in warm, dry conditions away from direct sources of heat or sunlight and in such a
manner as to preserve the working life of the instrument.
Warranty
Faults in manufacture and materials are fully guaranteed for 12 months from date of invoice and will be rectified by
us free of charge, provided the unit has not been tampered with and is returned to us with its housing unopened.
Damage due to dropping, abuse or misuse is not covered by the guarantee. Nothing in these instructions reduces
your statutory rights.
Martindale Electric Company Limited
Metrohm House, Penfold Trading Estate, Imperial Way, Watford, WD24 4YY, UK.
Tel: +44 (0)1923 441717 Fax: +44 (0)1923 446900
E-mail: sales@martindale-electric.co.uk
Website: www.martindale-electric.co.uk
Martindale Electric Company Ltd. Registered in England No. 3387451. Rev 2
Heating Time (seconds)
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MARTINDALE
E L E C T R I C
Microwave Leakage Detector
INSTRUCTIONS
TEK500