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6. FUNCTIONAL DESCRIPTION
6.1 Regeneration Unit RU 24 connected to XR 24, XR 24 II, XR 24 NOVA
The regeneration pumps of the X-ray developer are activated every time that the appliance is
initially switched on and, furthermore, are reactivated after every length of 1.3m of developed
film material when the regeneration switch is correctly set (switch (C) to ON).
For the duration of time that the film intake is activated (via light barrier H) on a film being fed into
the appliance, an impulse generator (A) produces rotational impulses which are counted, the
number of impulses being proportional to the length of the film.
The potentiometer (D) allows the running time of the regeneration pumps to be set at any interval
between 0 s and 60 seconds.
The running time of the regeneration pump is factory set at 30 s. In this time the pumps feed c.
190 ml fresh chemicals into the developer and fixer baths of the X-ray developer from the 5l
regeneration canisters.
Switching off the pumps, and / or switching off the X-ray developer transmits a delete impulse to
the counter which then resets at zero.
A)
Impulse generator
A1) XR24:
Drive shaft light barrier
A2) XR24 II:
Drive motor impulse generator
A2) XR24 Nova:
Drive motor impulse generator
B)
Regeneration Unit
C)
PCB regeneration switch On/Off
D)
Potentiometer for time setting
G )
Reduction of regeneration time to 50% / 30s
H)
Film intake light barrier
6.2 Regeneration Unit RU 24 connected to XR 24 PRO
The regeneration pumps of the XR 24 PRO are reactivated after every length of 1.3m of
developed film material.
For the duration of time that the film intake is activated (via light barrier H) on a film being fed into
the appliance, a generator produces impulses which are counted, the number of impulses being
proportional to the length of the film.
The software in the service program of the XR 24 PRO allows the running time of the
regeneration pumps to be set at any interval between 0 s and 60 seconds, see section 11.3.
The running time of the regeneration pump is factory set at 30 s. In this time the pumps feed c.
190 ml fresh chemicals into the developer and fixer baths of the X-ray developer from the 5l
regeneration canisters.
The switching off of the pumps after a regeneration phase automatically transmits an impulse to
the counter which then resets at zero. The current counter reading is stored whenever the X-ray
developer is swiotched off or in case of a power down.
A)
Drive motor impulse generator
B)
Regeneration Unit
H)
Film intake light barrier
I)
PCB
J)
Display
