Thermo Scientific TCF-32 Instruction Manual page 51

Table 6 Defective phenomena and corrective action of sealed sections
Symptom
Part name
Leak from Shaft (D)
overlay
solution line
Bypassing, Seal tube
and leak of head ass'y
sample and
overlay
solution
Bypassing, Seal
and leak of
sample and
overlay
solution
Bypassing
Overlay
solution line
leaks
Bypassing, Seal body
and leak of ass'y
sample and
overlay
solution
Water
Cooling Bath
Location
Portion
O-ring (1AS5)
Insertion recess
for O-ring
Portion in
contact with
O-ring
Contact face
Insertion recess
for O-ring
O-ring (1AP3)
O-ring (1AP14)
WC sealing face
(in contact with
seal)
Cooling Water
pressure
-32-
Probable cause
1. Poor sealing due to
degradation or injury
2. Poor sealing due to
insufficient grease
Poor sealing due to injury
in recess portion in contact
with O-ring
Poor sealing due to injury
in portion in contact with
O-ring (at 2 places, shaft
(D) and seal sides)
Poor sealing due to
surface roughness, injury
or step between inner and
outer rings
Poor sealing due to injury
in recess portion in contact
with O-ring
1. Poor sealing due to
degradation or injury
2. Poor sealing due to
insufficient grease
1. Poor sealing due to
degradation or injury
2. Poor sealing due to
insufficient grease
1. Poor sealing due to
surface roughness or
injury
2. Poor follow-up in
vertical direction of seal
body ass'y with seal
(large friction resistance
of seal body and
bearing housing
Poor pressure
2
<0.2Kgf/cm
Corrective action
Replace the
O-ring.
Apply grease.
Replace the shaft
(D).
Replace the seal
tube head ass'y.
Replace the seal.
Replace the seal.
Apply grease.
Replace the
O-ring
Apply grease.
Replace the seal
body ass'y.
1. Apply grease to
O-ring (1AG30)
of the seal
body ass'y.
2. Apply grease to
O-ring of the
bearing
housing).
Make water
pressure rise.