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20ml VARIABLE AUTOMATIC DRENCHER / INJECTOR
!
The 20ml Automatic Drencher/Injector (referred to as
applicator) has been designed for the administration of
most solution and suspension drenches and injectable
solutions to livestock. It should never be used for
IMPORTANT
vaccination of small livestock at dose settings of 2ml or less.
As components in this instrument may be affected by
solvents in some 'pour-on' formulations no responsibility will be
accepted by the manufacturer should the instrument be used with
such products.
The 20ml Automatic Drencher/Injector has been designed for
the administration of most solution and suspension drenches
and injectable solutions to livestock. It should never be used for
vaccination of small livestock at dose settings of 2ml or less.
As components in this instrument may be affected by solvents in
some 'pour-on' formulations no responsibility will be accepted by
the manufacturer should the instrument be used with such products.
BEFORE DRENCHING/INJECTING
Always read the label.
Check the label on the pharmaceutical manufacturer's container
for dose rates, precautions, and safety information prior to use.
Use only the recommended dose rate.
Use only the pharmaceutical manufacturer's recommended
rates. Refer to the pharmaceutical manufacturer's dose rate chart
or specifi cation. The manufacturer will take no responsibility if
the applicator is used for any other purpose than specifi ed or
used contrary to the pharmaceutical manufacturer's dose rate
specifi cations.
Check the applicator.
Before each use, the nozzle should be inspected to ensure there
are no sharp edges. Should this occur, remove with fi le or emery
paper or replace nozzle.
INSTRUCTIONS FOR USE
Preparing the applicator.
Fit the appropriate nozzle or injection attachment assembly to the
handpiece, taking care to ensure the delivery valve and spring
(item 7) remain facing in direction shown in the handpiece diagram.
When drenching, use large barb inlet fi tting (item 20) as supplied
fi tted to the instrument, taking care to ensure the inlet valve and
spring (item 19) remain facing in direction shown in the handpiece
diagram.
!
Always exercise care when dosing animals. Do not
apply undue pressure and ensure the nozzle is not
forced against or through delicate mouth and throat
CAUTION
tissues.
When injecting, fi t dual barb inlet fi tting (item 21) to handpiece,
taking care to ensure the inlet valve and spring are positioned as
above.
When injecting, it is essential that this instrument and a supply
of needles be thoroughly sterilized before each use. A common
method of sterilization is as follows:
1 Fit injection attachment assembly (items 1, 2, 3, and 5) to
handpiece.
2 Connect feed tube and spring to handpiece.
3 Wrap cloth around handpiece and place end of feed tube into
container of clean hot water and draw hot water into cylinder
by depressing lever.
4 Remove cloth and suspend instrument by fully immersing in a
container of water and boil together with the needles for 10 to
20 minutes.
5 Remove instrument and needles from container, wrap cloth
around handle and pump dry, remove cloth and dry handpiece.
Suspending the instrument not only makes it easier
to remove, but also prevents damage should the
container boil dry. Chemical sterilization with antiseptic
NOTE
solutions is sometimes practised and in such instances
the recommendations of the chemical manufacturer
should be followed. DO NOT attempt to sterilize by
autoclaving.
Attach connecting tube to both the hand piece and draw off system.
Make sure the springs provided are screwed over the feed tube in
an anti-clockwise direction. This will prevent the tube from kinking
at these points.
Priming the applicator.
To prime, set to maximum dose and actuate the instrument by
depressing the lever quickly until material is drawn into the cylinder.
Expel all air by holding the instrument in a vertical position, with
the nozzle pointed upwards until both cylinder and nozzle are full.
!
Care must be taken to ensure the liquid does NOT
come into contact with any part of the operator's
body. Chemicals may cause injury to the operator.
WARNING
To adjust the dose.
Loosen item 30 (dose adjustor lock nut). Depress the lever to
take pressure off item 29, (dose adjustor screw). Adjust the dose
adjustor screw in or out depending on the dose setting required. To
set the correct dose, align item 13 (black piston) with the cylinder
marking. Once the piston is in the correct position, release pressure
on the lever and re-tighten item 30 (dose adjustor lock nut). (See
calibration instructions)
Calibration of the applicator.
As the graduation markings on the cylinder are for reference only,
check the accuracy of the instrument with a calibrated measuring
glass. To ensure repeatability, squirt 5 x 5ml doses into a calibrated
glass. The level of fl uid should be at the 25ml mark. If it is not,
readjust the applicator following the steps above then perform the
dose test again. If you have problems with dose accuracy contact
the manufacturer or place of purchase.
Cylinder fi ll rate and delivery pressure.
This can be varied by adjusting item 26 (return spring) tension.
Turning item 23 (adjustor nut) on the trunnion assembly clockwise,
will increase fi ll rate and delivery pressure, turning anticlockwise
will reduce fi ll rate and delivery pressure. Minimum return spring
tension should be used to achieve acceptable fi lling rate and
delivery speed. If spitting occurs reduce tension on return spring.
CARE AND MAINTENANCE
To ensure continued high performance from this instrument,
attention to cleanliness is essential. After each use, fl ush the
instrument and feed tube thoroughly by pumping through a warm
water detergent mix, followed by clean water. Remove the feed
tube from the instrument and suck a small quantity of NJ Phillips
Lubricant into the cylinder by immersing the inlet fi tting in the
lubricant and gently pumping the lever. If at any time the instrument
becomes sluggish in operation, maintenance by cleaning and
lubrication should overcome the problem.
!
DO NOT store your applicator or feed tube full of
product. Clean as per the "Care and Maintenance"
instructions.
IMPORTANT
LUER LOCK NEEDLE FITTING
1. Position the needle in
front of the needle nut.
2. Locate the needle
onto the needle mount
and turn clockwise
to tighten.
3. The needle is now
secured in place.
33
VALVE
&
SPRING
DELIVERY
CAGE
HOOK
NOZZLE
DETAIL
LEGEND:
6. Delivery Cage
10. Cylinder Seal
15. Push Rod
1. Nozzle Nut
Lock Nut
Ring
Seal Ring
2. Luer Lock
7. Delivery Valve
11. Cylinder
(Delivery End)
Fitting
Complete
12. Piston Seal
16. Push Rod
3. Injection
8. Nozzle Nut
Ring
17. Push Rod
Attachment
Retaining Seal
13. Piston
Seal Ring (Inlet
4. Sheep Nozzle
Ring
14. Lubricating
End)
5. Nozzle Seal
9. Delivery Valve
Washer
18. Push Rod
Ring
Cage
Guide
IMPORTANT: QUICK REFERENCE TROUBLESHOOTING GUIDE
SYMPTOM
PROBABLE CAUSE
Foreign matter lodged under the inlet valve.
1a.
P r o d u c t b e i n g
r e t u r n e d t o t h e
container from the
applicator.
Inlet valve spring is missing.
1b.
U n a b l e t o d r a w
Inlet valve and spring incorrectly assembled.
product from the
Foreign matter lodged under delivery valve.
container.
Nozzle seal ring damaged.
2.
Product leaking out
of the nozzle or air
Delivery valve and spring incorrectly assembled.
being drawn into the
Delivery valve sealing edge damaged.
cylinder from the
nozzle end.
Delivery cage seal ring damaged.
Applicator is hanging at end of feed tube when
3.
Fluid dripping out
not in use.
of nozzle when not
in use.
4.
Air is being drawn
Foreign matter lodged on or around piston o-ring.
into the cylinder
Piston not sealing against push rod.
from in and around
the piston.
Delivery valve and spring incorrectly assembled.
Feed tube damaged.
Feed tube connection at container or applicator
is split or damaged.
5.
Piston not returning
Piston o-ring and lubricating washer dry.
fully on fi lling stroke.
Blockage in inlet line.
Kinking or restriction of feed tube.
Binding of push rod within dose adjustor
assembly caused by foreign matter between
sliding surfaces.
Product too viscous for draw-off and feed tube.
Chemical container not collapsing as instrument
draws fl uid.
Hard delivery stroke
6.
Foreign matter in delivery valve spring or
pressure
blockage in nozzle.
CHECK FOR FOREIGN MATTER
A
SPRING MISSING
CHECK FOR FOREIGN MATTER
D
WRONG WAY AROUND
19. Inlet Valve
24. Trunnion
32
Complete
25. Spring
20. Large Barb
Adjustor Spindle
Inlet Fitting (Fitted
26. Return Spring
30. Dose Adjustor Lock
to Instrument)
27. Lever
Nut
21. Dual Barb
28. Lever Pads
31. Circlip
Inlet Fitting
29. Dose
32. Lever Pin
22. Handle
Adjustor Screw
33. Hook Nozzle
23. Adjustor Nut
CORRECTIVE ACTION
SEE A. Remove inlet adaptor (20) and clean the internal seat by removing valve
and spring (19), rinse with clean water then wipe with a soft cloth. Reassemble
ensuring correct orientation of the valve and spring (19).
SEE B. Replace inlet valve spring (19).
SEE C. Reassemble valve and spring (19) correctly (as shown in the top photo).
SEE D. Remove nozzle (4), valve and spring (7). Clean valve seat located in
front of cylinder by rinsing and wiping with a soft cloth. Clean valve and spring
(7) and reassemble ensuring valve and spring are oriented correctly.
SEE E. Replace nozzle seal ring (5).
SEE E. Reassemble valve and spring (7) correctly (see parts illustration).
SEE D. Replace the delivery valve and spring (7).
Replace the delivery cage seal ring (10).
SEE F. Hang applicator at same height or higher than off take point of feed
tube on container of product. This ensures the delivery valve is free of load
which can cause the product to leak past the valve assembly.
SEE G. Replace piston o-ring (12) and lubricate liberally.
SEE G. Remove cylinder (11). Hold rear push rod (16), tighten piston (13) fi rmly
using wide blade screwdriver or replace push rod / piston seal ring (if applicable).
SEE E. Reassemble valve and spring (7) correctly (see parts illustration).
Replace the feed tube.
Replace container fi tting or inlet adaptor to ensure an air tight seal. Cut feed
tube for clean ends.
SEE G. Remove cylinder (11), soak piston o-ring (12) and lubricating washer
(14) in NJ Phillips Lubricant.
Check inlet valve and spring (19), inlet adaptor (20), feed tube and container
draw off fi tting for foreign matter.
Remove restriction or reposition feed tube.
Dismantle push rod (16) from instrument and rinse it and dose adjustor
assembly with clean water. Inspect for damage. If damaged, replace
affected part.
Increase feed tube and draw off bore size.
Vent pack or use a Phillips Vented Draw-Off system.
SEE D. Remove nozzle (4). Clean delivery valve &, spring and nozzle fl uid
hole. Reassemble.
B
C
1
2
VALVE WRONG WAY AROUND
E
G
LUBRICATE IN
PISTON
CYLINDER
O-RING
ENSURE PISTON IS TIGHT
3
4
F
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