NEOTECHA SAPRO SAMPLING DEVICES
MAINTENANCE AND REPAIR INSTRUCTIONS
Before installation these instructions must be fully read and understood
1 SAPRO SAMPLING DEVICES
Thank you for purchasing Neotecha sampling
equipment. These products incorporate the
latest in design and mated technology and
require little maintenance when applied and
cared for correctly.
Before undertaking any maintenance work on
Wafer body bayonet adaptor
Wafer body bottle adaptor
Neotecha Sapro sampling devices the following
instructions should be read and understood
thoroughly. Any questions about these
instructions should be directed to Neotecha or
any authorized distributor.
2 OPERATION
Details of the installation and operating
procedures will be found in a separate
publication: Maintenance and Installation
Instructions VCIOM-01977 and VCIOM-01978.
Flanged body bayonet adaptor
Flanged body bottle adaptor
3 SAFETY
Prior to any disassembly, ensure that the unit
has been thoroughly cleaned. In every case,
protective equipment such as gloves, eye
protection etc., should be used when operating,
cleaning or maintaining the system. Attention
must be given to any national or company
regulations regarding dangerous media.
Environmental protection regulations may vary
according to the country or industry involved
and must be strictly observed.
Sapro piston syringe
Emerson.com/FinalControl © 2017 Emerson. All Rights Reserved. VCIOM-01984-EN 21/04
NEOTECHA SAPRO SAMPLING DEVICES
MAINTENANCE AND REPAIR INSTRUCTIONS
4 ROUTINE INSPECTION
Sapro sampling valves and syringes are
precision engineered devices and need to
be kept clean and well maintained to ensure
perfect operation. The Sapro units should be
inspected periodically to ensure that seals are
not leaking, as follows:
a. Valve seat
Excessive moisture on the head of the safety
plug may indicate a leaking valve seat.
(Refertoreplacement instruction further on).
b. Spindle seal
Remove the yellow screwed plastic plug at
theleak detection port on the Sapro valve body.
Excessive moisture at this point may indicate
a leaking spindle seal. (Refer to replacement
instructions further on).
c. Syringe nozzle seal
When a sample has been drawn into the
syringe, examine the nozzle seal area and
the O-ring and piston seals on the cylinder.
Any leakage indicates the need to replace
the relevant seals. (Refer to replacement
instruction further on).
5 CLEANING THE SYRINGE
After each use of the Sapro syringe, the unit
should be cleaned by thoroughly rinsing with an
appropriate cleaning fluid as follows:
1. Press the operating lever (8) against
thecylinder cage (9) and lock into position
by moving with the locking lever (6) from
position B and to position C.
2. Immerse the tip of the nozzle into a jar
containing the cleaning fluid.
3. Pull and push the piston rod repeatedly until
the syringe cylinder is clean.
9
8
C
B
Cleaning the syringe
6
2
NEOTECHA SAPRO SAMPLING DEVICES
MAINTENANCE AND REPAIR INSTRUCTIONS
Figure 1
a
b
11
10
9
5
6
2/3
7
4a 4
Figure 2
6 SAPRO SYRINGE: MAINTENANCE
6.1 Syringe disassembly
Disassembly of the syringe unit for cleaning,
sterilization or replacement of components,
isundertaken as follows (see Fig. 1).
1. Unscrew the cage end cap (13) and remove
the cylinder assembly (10, 11, 12, 13 and 14)
from the syringe cage (9).
2. Unscrew the grip (14) and remove the cage
end cap (13).
3. Push the piston assembly (11) out of the
cylinder (12) in the direction of arrow (a), thus
pushing off the cylinder base (10) from the
cylinder. The direction of removal is important
to prevent damage to the piston seals.
4. Clean all disassembled parts and replace
asnecessary.
13
14
12
Figure 3
6.4 Seal replacement
1. Place the nozzle (5) in tool No. 4, asshown
(see Fig. 4).
2. Apply a little silicone oil to the replacement
nozzle seal assembly (2 and 3) and insert it
into the nozzle cavity.
3. Insert tool No. 3 into the nozzle and place
tool No. 2 over tool No. 3, as shown.
4. Tap tool No. 2 with a mallet until the nozzle
seal assembly is correctly located within
thenozzle.
5. Replace the spacer (4) and washer (4a) over
the syringe spindle as shown in Fig. 2.
6. Replace the nozzle assembly over the
syringe spindle and screw into position.
7. Secure the nozzle by tightening set
screws(6).
Nozzle tool
No. 1
Figure 4
Nozzle tool
No. 2
Nozzle tool
No. 3
Nozzle tool
No. 4
CAUTION
Reassemble the syringe by reversing the above
procedure, ensuring that the piston is inserted
into the cylinder in the direction of arrow (b).
6.2 Replacement of syringe nozzle seal
If the nozzle seal is leaking, it should be
replaced by implementing the following
procedure.
6.3 Seal removal (see Fig. 2)
1. With the syringe cap removed, loosen
thetwo set screws (6).
2. Unscrew the nozzle (5) from the syringe
head (7).
3. Ensure that the spacer (4) and washer (4a)
are removed from the nozzle.
4. Place the nozzle on a firm surface. Place
tool No. 1 on top of the nozzle and tap with
a mallet until the nozzle seal assembly
(2 and 3) falls out of the nozzle (see Fig. 3).
3
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