INGOS Ltd. Laboratory Instruments division Page 9
4. MAINTENANCE
4.1 Apparatus maintenance
Do not leave the evaporator surface contaminated from corrosive substances. It could damage the
evaporator coating. Clean the contamined surface with a clean soft cloth. The cloth may be moistened
but not wet. It is also possible to use ordinary washing means for cleaning purposes. It is forbidden to
clean the heating bath with the means which could spoil its smooth surface. In case of sediments of
furning,impurities, particulates of water rusts ,use the cleaning compounds for cleaning of furning or
mellow solution of HCL. In process of cleaning use the protective means recommended by producer of
applied cleaning compounds.
Caution: Disconnect the apparatus from the network while cleaning it with a wet cloth!
4.2 Sealing replacement
Disassemble the condenser, remove the releasing pipe with the valve, remove the ball-and-
socket ground joint flask, release the nut of the ball adapter and carefully remove the actual adapter.
Release the gufero sealing, clean the ball adapter, slightly apply silicone Vaseline onto the new sealing
and mount it into the ball adapter. The sealing cavity faces out of the ball adapter. If necessary, replace
also the flat sealing between the ball adapter and the head fitted with a rotary casing. Perform the
assembly according to the point 3.2. Apply a light layer of silicone Vaseline to the gufero sealing
approximately after 80 operation hours (more often if necessary).
5. DEFECTS AND TROUBLESHOOTING
5.1 Leakage
The main cause of leakage is usually an incorrect sealing assembly. At first you should check that
all joints have been installed correctly. If it is the case, disassemble the glass and verify the condition of
the ball adapter sealing and flat sealing, if necessary replace them. Carefully assemble according to the
instructions, switch the rotation ON and start the vacuum pressure up.
5.2 Other failures
The instrument does not react after being turned on. Check the fuse or replace for a new one
of the same parameters, as appropriate. Check that the rotation is not hindered (turning by hand),
turn on and off the network switch.
The window of the rotation key is flashing, rotating parts are not moving. Ensure that Rotation
blocking knob is set to ”Unlock” and than press rotation key again.
The window of the rotation key is
flashing. Check that there is not anything which could impede the flask from its rotation (manually),
switch the mains switch OFF and ON again.
The bath no warms. Put out the socket plug of the bath and let the bath cool down. Plug in again fill
up the water or oil and set required temperature.
