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Aztec 600 aluminium, ammonia, color, iron, manganese, phosphate
Single- and multi-stream colorimetric analyzers
13 Maintenance
72
IM/AZT6CR–EN Rev. R
7. Referring to Fig. 13.14, remove the four screws
N
and
remove the motor and sample tube
O
from the lower half
of the measuring cell.
8. Referring to Fig. 13.15:
a. Slide the sample tube
P
off the piston assembly
Q
. Discard the sample tube.
b. Loosen retaining grub screw
R
, unscrew the
piston assembly
Q
from the piston shaft
S
and
discard the piston assembly.
c. Remove O-ring
T
from the base of the motor
mounting plate and discard.
d. Fit new O-ring
T
ensuring it is located correctly in
the groove in the base of the motor mounting plate.
e. Screw the new piston
Q
and sample tube
P
assembly onto piston shaft
S
and tighten the
retaining grub screw
R
.
f. Slide sample tube
P
up to contact O-ring
T
.
Fig. 13.14 Removing the Motor and Sample Tube
O
N
Fig. 13.15 Dismantling/Reassembling the Piston
T
S
Q
R
P