VERDER CARBOLITE GERO CAF G5 Installation, Operation And Maintenance Instructions Download

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Carefully swing the door arm in a clockwise direction (view from front) to its stop
position, ensuring that the door plug does not touch tube end guard. The door plug
should be clear of the furnace in its fully withdrawn position. It should not be possible to
push the door arm in towards the furnace until the door arm is rotated fully clockwise
(view from front) and the door plug is in line with the work tube front aperture.

The door arm assembly has an Ethernet cable running through it for the camera. The
cable has a connector at each end. One end of the cable comes out of the conduit cable
through the conduit plate and is connected to the Ethernet connector inside the aperture
in the left hand side of the furnace case see fig. 22. Once the cable is connected
carefully insert the connector into the aperture and fix the conduit plate into position.

Note

: take care to keep the cable away from sharp edges.

If no other options are to be added to the rear of the unit i.e. rear lighting option, the
back panel can be replaced, ensuring that the earth tag and fan connections are
securely fitted.

Carefully slide the door plug into the work tube ensuring that it is clear of the front seal
assembly. If the door plug is misaligned, adjustment of its position in relation to the
work tube can be achieved by loosening the front and back door arm fixing screws and
rotating the door arm about the door slide shaft axis. See fig 10a.

3.3.5

Pressure Testing of the Work Tube Assembly

Note

: To ensure that the work tube assembly has been correctly installed it is necessary

to pressure test the furnace prior to use.

Due to the high work tube temperatures used during CAF testing the tube ‘O’ ring seals
will deteriorate with time. The furnace work tube also has a finite life and may
eventually crack due to normal wear and tear. It is necessary to conduct a pressure test
of the work tube assembly at regular intervals during normal use of the furnace to
ensure integrity of the work tube and ‘O’ ring seals. The following procedure applies:

Connect one end of the flexible gas inlet pipe (normally connected between the
bulkhead connection on the front of the furnace case and the work tube front seal
assembly) to the work tube front seal assembly. See fig 11b. Connect the other end to
an adjustable compressed air test line or inert gas supply capable of delivering up to 4
psi. Check all air/ gas connections for leaks, any leakage from the air/ gas supply line
may affect the pressure test results.

Close the door assembly and clamp in position using the swing bolts.

Securely block the work tube vent at the back of the furnace using blanking plug.

Pressurise the work tube assembly via the flexible gas inlet pipe to 3 psi ± 1 psi using
compressed air or inert gas.

Once the furnace gas system is pressurised to 3 psi ±1 turn off the air supply, the gas
system should stay pressurised to 3 psi ±1 for 5 minutes.

Following successful pressure testing of the work tube assembly, connect the flexible gas
inlet pipe to the bulkhead connection on the front of the furnace case. Check all external
gas connections and vent tubes for leaks prior to using the furnace.