Instruction Manual MIC type EC-912
Revision no.4
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a)
Assemble the MIC by pressing down the housing and aligning the three distance pieces
with the three holes in the housing and fasten the screws. Make sure that the alignment
marks on the housing and mounting plate match.
b)
Screw the holder with radioactive source in the top of the housing and fasten the locking
screw (Allen screw 1.5 mm, metric).
Analog and Intelligent MIC Control Unit (AMCU and IMCU)
No maintenance of the AMCU and the IMCU is required.
Flow Control Unit (FCU)
The maintenance of the FCU concerns cleaning of the flow meter and needle valve and exchange of
filter element.
Cleaning of flow meter:
Before cleaning the flow meter is has to be dismounted from the FCU and disassembled in the
following way:
a)
Remove the FCU from the CC by loosen the four screws in the front plate, remove the
two air hoses from the pipe branch on the rear plate and on the filter and pull out the
FCU by pressing on the filter unit.
b)
Remove the four screws in the rear plate, loosen the hose connections on the flow
meter and remove the rear plate with the filter and the two hoses.
c)
Loosen the four screws holding the flow meter mounting plate and pull back the
mounting plate with the flow meter approx. 5 cm. The screws are accessible through
holes in the two side profiles of the FCU and can slice in the two slices in the side
profiles.
e)
Remove the two screws holding the flow meter to its mounting plate and pull out the
flow meter.
d)
Turn the flow meter needle valve fully C.C.W. and pull out the needle. Remove the
upper hose connector and unscrew the rest of the needle valve with a 16 mm ratchet
socket.
e)
Remove the screw on the top of the flow meter and take out the ball by inverting the
flow meter and allowing the ball to fall into your hand.
The flow tube, needle valve and ball can now be cleaned with a little pure soap and wa-ter and a bottle
brush. Avoid the use of benzene, acetone, carbon tetrachloride, alkaline detergents, caustic soda,
liquid soaps which may contain chlorinated solvents, etc. and avoid prolonged immersion. Remove the
soap water by rinsing with clean water and allow the flow meter to dry before assembling.
To assemble the flow meter and the FCU just follow the above instructions in the op-posite order. A
little stop cock grease or petroleum jelly on the O-rings will help main-tain a good seal as well as
facilitate assembly.
