4
Roll a small cone of ordinary copy paper, leaving a small opening at
the end of the cone, and pour the mercury through this cone into an-
other clean paper cup or glass container. Repeat a few times. Residue
will adhere to paper.
Remove the graduated plastic cartridge tube and clean it. The bore of
the tube may be easily cleaned with alcohol and a lint free pipe brush.
The outside of the tube should also be cleaned occasionally by wiping
with a damp cloth.
Replace the graduated plastic tube and return the clean mercury to
the instrument through the opening at the top of the tube, using the
paper cone described above. Check the mercury level - it should be at
the “0” line on the plastic tube with the inflation system discon-
nected and the instrument in its correct position (vertical for desk or
wall mount models, 15° incline for mobile instruments). If some mer-
cury has been lost, add enough (through the top of the plastic tube)
to bring the rim of the mercury meniscus to the “0” calibration mark.
Then replace the knurled cap at the top of the graduated plastic tube,
and screw it down firmly.
REMOVING THE GRADUATED PLASTIC TUBE
ADC’s EZ-Tube
™
system facilitates removal of the 5mm graduated
plastic cartridge tube. To remove, follow these steps:
1. Force mercury out of the cartridge tube by tilting instrument
TOWARDS reservoir (to the right on 922, to the back on 932, 952, or
972).
Note:
The 952 must first be removed from its swivel wall bracket.
3. Lift on the spring loaded EZ-Tube
™
mechanism located at the top
of the instrument (932, 952, 972). Tilt instrument forward to free
tube. If necessary use a small flathead screwdriver to help dislodge
the top of the tube. On 922, remove knurled top cap by turning
counterclockwise. Remove tube, by sliding upward until fully dis-
lodged.
2. Secure the mercury within the reservoir by moving the lock switch
to the “Off” position.
Note:
Make sure all mercury is out of the cartridge tube.
