
Model 415C & 415SGS Instruction Manual
D01669102
April 2019, Revision A
38
7.4 Removing Slurry Cup Plug from Pressure Vessel
In the case where the head cannot be removed by hand alone please take caution
and follow these steps:
Air pressure can be very dangerous and head can easily be
ejected with force causing injury or component damage. Use
safety gear not limited to eye, face, hand and foot protection.
1.
Remove pressure vessel from the instrument and place in vise with slurry
cup above table or flat surface.
2.
Attach pressurized head removal nipple to the hand-driven air pump. The
nipple is shown attached to the head and the hand-driven air pump.
3.
Attach head removal nipple using the medium pressure nut to the head.
4.
Loosen the slurry cup cap about 2 rotations making sure it does not come
completely loose. This leaves a gap between the cap and the head to allow
the head to dislodge from the cup.
5.
Slowly apply increasing air pressure to move head. The head may eject with
a “pop” or gently ease out of the slurry cup. The cap will stop the head from
coming completely off the cup.
6.
Undo the head removal nipple and remove the slurry cup cap.
7.
Remove the head from the cup using caution.
8.
If the head does not come loose it may be necessary to reinstall the slurry
cup cap with an increased gap between the head and cap. Reattach the head
removal nipple and hand-driven air pump and continue applying air
pressure. Repeat steps 6-7.
9.
If the head still does not come loose, it may be necessary to leave the slurry
cup cap completely off and employ the use of a second individual with a
pair of hands. This person must use caution and care while holding the
slurry head and apply more air pressure via the removal nipple and air
pump. The head may eject with a “popping” sound and with force. Take
care to not let go of the head while ejecting from the cup. Damage to the
head or technician may occur if proper protection and safe guards are not
used.