instrument preparation
n
Place instrument on a solid surface
n
Connect ground terminal to a suitable earth connector
n
Fit selected electrodes to the threaded shafts in the
test vessel taking care not to scratch electrode surfaces
n
Adjust the electrode gap with the feeler gauges
provided, then lock the adjustment wheels and
recheck the gap
n
Fit test vessel into instrument chamber
n
Connect line power
n
Turn on the instrument
instrument controls
The OTS80PB/OTS60PB is controlled by four directional
keys, ‘OK’ key and ‘TEST’ key.
Pressing the ‘TEST’ key will initiate a test. Directional and
‘OK’ keys are used to navigate and select options.
Display
The display is a 3.5” colour TFT display with backlight.
Six tabbed windows are provided to facilitate instrument
setup, test execution and other functions. Users navigate
between top level tabbed windows using left and right
arrows. Up and down arrows are used to highlight items
and ‘OK’ toggles options positioned opposite each item.
Main tab icons
Home (Test)
File
Tools
Setup
Information
Language
initial settings
It is advisable to set the following before initiating a test:
n
Set date and time – time/date option
n
Adjust the display backlight for optimum legibility –
display setup option
n
Select units – metric or imperial
Care of batteries
Customers should be mindful of the need to maintain
battery capacity. As a minimum, lead acid batteries should
be fully charged every 3 months. Customers with NiMH
battery option are advised to operate from battery without
line power periodically to exercise the battery. Batteries
have a finite lifetime and are only replaceable at Megger
authorised repair centres.
Care of instrument
n
Always keep the instrument clean and free from dust
and fibrous material
n
Cleanliness of the test chamber is very important
n
Cleaning the test vessel is mandatory and a thorough
clean must be done daily/weekly depending on
frequency of testing
n
Introducing fibres or other particles into the test
vessel will result in erroneous breakdown values. A
small volume of a test sample can be used to rinse out
remnants of old oil
n
If there is any damage to the test vessel, chamber or
lid, the instrument should be repaired by a Megger
authorised repair facility
