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16/20LTR BACK PACK HAND PUMP
SPRAYERS
MODELS:16LBP/20LBP
PART NO: 3402272 & 3402277
USER INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC0219 ISS2
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INTRODUCTION
Thank you for purchasing this CLARKE Sprayer, designed only for use with
insecticides or other water-based products.
Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you, and you can look forward to your purchase
giving you long and satisfactory service.
GUARANTEE
This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.
GENERAL SAFETY PRECAUTIONS
1. Never use this sprayer to store or spray flammable solvent-based
chemicals.
2. Empty the contents if the sprayer is not to be used for long periods.
3. If insecticide is being sprayed, always wear a protective mask, safety
glasses, footwear, overalls and gloves to protect the skin and face. Never
spray chemical products facing into the wind.
4. Never spray pesticide towards other people, animals or foodstuffs.
5. Never use the sprayer for handling hot liquids and avoid operating in
excessively hot environments.
6. Always comply with any applicable insecticide manufacturers safety
instructions/directives before use.
7. Stop using the sprayer if the container or hose is found to be damaged.
8. Always ensure all hose and lance connections are tight and leak-free.
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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
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ASSEMBLY
The sprayer is supplied with an accessories pack containing the following
items. The numbers in brackets refer to the diagram/list on pages 6 & 7Any
deficiencies should be reported to your Clarke dealer..
2 x Connecting collets (46) 1 x Handle securing clip (17)
3 x Spray nozzles (Twin headed (53),
Conical (54) and Flat Fan (55)
1 x Piston cup seal (4)
1. Push the lance into the trigger
assembly and secure with the
screw cap containing the collet
and O-ring.
2. Attach one of the nozzles to the
other end of the lance and
secure with the screw cap.
3. The shoulder straps can be
adjusted for length using the
buckles, so as to position the
sprayer comfortably on the operators back, ensuring they are not twisted.
1 x Complete set of O-rings
• 3 x to fit nozzles (53/54/55)
• 2 x to fit lance (47)
• 2 x to fit spray gun body (34)
• 1 x thin/1 x thick to fit trigger
valve piston (35/36)
OPERATION
1. Unscrew the container filler cap
and ensure the filter is in place.
2. Fill the container with the required
liquid up to the desired
graduation on the end and
replace the filler cap.
3. Pump the operating arm a few
times to pressurise the container
until the pump action stiffens.
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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
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4. Squeeze the trigger of the spray
gun to start spraying.
5. If spraying continuously, squeeze
the trigger and engage the
trigger lock by sliding it back with
your thumb.
6. Pump the operating arm when
necessary to maintain pressure.
• The sprayer will require regular
re-pressurising approx every
0.3-0.5L to maintain the optimum output pressure.
7. Secure the operating arm in its retaining clip when not in use. Likewise
attach the lance to the clip on the operating arm.
MAINTENANCE
AFTER USE
After use, the sprayer should be flushed thoroughly with clean water to avoid
the possibility of blockages from product residue, or any cross-contamination
between different products.
After extensive use, unscrew the
trigger body and remove and clean
the filter inside the trigger assembly.
If not used for long periods or used
continuously for several days, add a
light smear of vaseline to the sealing
washers and moving parts to reduce
wear and assist free movement.
REPLACING THE PISTON CUP SEAL
In order to lubricate or replace the
piston cup seal with the spare item
supplied, the pump assembly can be
removed as follows:
1. Remove the split pin and release
the retaining clip from the
operating rod.
2. Withdraw the operating rod from
the top of the pump assembly.
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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
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3. Unscrew the retaining ring and withdraw the pump from the container.
• The pump will lift out of the container, complete with felt seal and
rubber o-ring.
4. Draw the piston out of the cylinder
to expose the cup seal.
5. Prise the cup seal off the piston
and fit the replacement, making
sure to smear a layer of vaseline
before re-assembly.
6. Re-assemble the components in
reverse order.
FAULTFINDING
Symptom Cause Remedy
Poor delivery and
leaking lance.
Operating handle
stiff/hard to move.
After pumping the
unit to pressurize
the chamber,
pressure is quickly
lost as soon as the
pump is operated.
After pumping the
unit to pressurize
the chamber, the
lever rises slowly
when released.
Handle is hard to
operate and
sprayer only
discharges air
without water.
Loose connections or
damaged connecting collets/o-rings.
Filter screen or spray head is
blocked.
The piston, sealing ball or
sealing ring may be
damaged or out of position.
The chamber valve is not
seating correctly due to
wear or foreign material
present.
The hose in the air chamber
may have come off.
Inspect condition of
connecting collets and orings & replace if necessary.
Clean out the filter screen
and spray head.
Dismantle unit and refit
loose or damaged parts.
Clean or replace the valve.
Remove end nut and drain
out any water. Insert suction
hose tightly into the plastic
tube and apply waterproof
adhesive to the joint.
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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
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COMPONENT PARTS
No Description No Description
1 Fixing clamp 29 Spray gun handle
2 Handle securing clip 30 Trigger lock
3 Air chamber 31 Pivot pin
4Piston cup seal 32Filter
5 Ball 33 Sealing washer
6 O-ring 20.5 x 2.5 34 Spray gun body
7 Locking nut 35 O-ring
8 Operating handle 36 O-ring
9 Split pin 37 Trigger valve piston
10 Collet 38 Spring
11 O-ring 39 Screw cap
12 Air chamber lid 40 Trigger
13 Felt ring 41 Shoulder pad
14 Pump cylinder gasket 42 Shoulder strap
15 Pump cylinder 43 Straight tube
16 Container 44 Strap sleeve
17 Handle securing clip 45 Strap hook
18 Locking wedges 46 Collet
19 Base 47 O-ring
20 Buckle 48 Nozzle body
21 Filter screen 49 O-ring
22 Sealing ring 50 O-ring
23 Container lid 51 O-ring
24 Vent plug 52 Nozzle cap
25 Flexible hose 53 Twin headed nozzle
26 Locking cap 54 Conical style nozzle
27 Collar 55 Fan style nozzle
28 Internal bush 56 Lance Assembly (complete)
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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
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