What is the main purpose of preventive maintenance?
Under normal use, how often must you clean the cylinder and the tank
for iron scale and slivers?
Every five days.
Every three days.
Once a week.
As often as needed.
Which of the following listed items should NOT be used for cleaning of
the EK-1 Washer?
2- to 5-percent oxalic acid
Steel wool and wire brush
All of the above.
PHOTOGRAPHIC FILM DRIER EL-4(1)
This section contains
3-24 Purpose and Use
Photographic Film Drier EL-4(1) (figure 3-5) is a thermostatically
controlled metal cabinet that dries roll and sheet (cut) photographic film.
It is used in a film laboratory and is located as close as possible to the