(c) Check that the tank solutions circulate. The developer and fix
circulation pumps are identical. If a pump motor is operating, but the solution is not
circulating, check for a stuck impeller. If you run the pumps when they are dry, the
impellers and plastic pump housings will be damaged by excessive heat, causing the
impeller to jam. A foreign object wedged between one of the impeller blades and the
housing could also cause a stuck impeller. To check for a stuck impeller, drain the
solution tank and remove and disassemble the pump. See Lesson 4, Remove and
Replace or Repair Defective Components of
X-ray Film Processors.
(d) Check for proper water solenoid activation. Refer to paragraphs 1-
4a(7)(a) through (d).
b. Dryer Section.
(1) Check the transport rack. The dryer rack rests on a support bearing and
a support spacer, which fit into the frame of the processor. Refer to figure 1-2. The
dryer rack must be seated into the processor frame for the rack to transport the film
(a) Clean off the rack rollers. Remove the dryer rack from the
processor and clean it. Examine the dryer rack to see that all of the rollers are being
driven and that the strippers and collars are all in place on the discharge rollers
(b) Lubricate the dryer drive shaft bearings beneath the support
(d) Check for unobstructed film transport through the rack.
(e) Vacuum the entire dryer section.
(2) Check the air system. The blower motors remain off during the initial
warm-up of developer solution. They turn on when power is first applied to the dryer
heaters. They remain on until you turn off the power at the end of the day.
(a) Clean the blower and air ducts.
(b) Clean the blower motor.
(c) Check the blower motor for excessive draw. Check the power to
the blower motor between TS3-4 and TS3-7, while the blower is running. There should
be line voltage. The power is switched on when the normally closed relay K3 is
switched off after solution warm-up. If the blower is not working at all, check fuse F3.