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Tooland DT20005N Mode D'emploi page 6

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Pump Non-Return Valve
(situated at bottom of the pump barrel)
This stops the compressed air in the container from escaping back into the pump.
If it is faulty, the unlocked pump handle will rise when the container is pressurized.
To remove the valve, lift the edge of the valve and pull. (take care not to damage the
sealing face of the barrel).
To replace place the valve over the centre hole and push down firmly.
Pump Barrel Seal Rings
These make an airtight seal between both the pump barrel and adapter.
Also, between the adapter and container when both are screwed down tight.
To check this, turn the pressurized sprayer upside down and if there is a leak, liquid will be
forced from the joints.
Nozzle Cap
Keep this clean and free from obstruction.
Also, the two swirl grooves at the end of the lance must be kept clean and free from
sediment to ensure a good spray pattern.
The nozzle O-Ring should be kept lubricated with silicone grease.
Lance
Keep the trigger clean and free from sediment and chemicals by regularly flushing through
after use.
If necessary, remove and clean the shuttle in the trigger.
Outlet and Dip Tube
To rewash the outlet or replace the dip tube, unscrew the hose nut and pull the outlet
spigot and dip tube through the outlet body.
Winter Use
Drain liquid from all parts after use to prevent damage from freezing.
Annual Maintenance
At least once a year thoroughly clean the whole sprayer and apply silicone grease to all
moving parts.
Test with water and if any washer or seal has perished it must be replaced.
8.
Fault Finding Chart
Weak or no spray.
Distorted spray.
Leaks.
Unit will not function.
Handle rises.
V. 01 – 18/10/2021
All manuals and user guides at all-guidesbox.com
DT20005N
fault
Insufficient pressure or loss of
air.
Obstruction.
Partial blockage in spindle or
nozzle.
Build-up of sediment or
foreign matter on internal
sealing surfaces.
Swelling of sealing rings or
total blockage.
Faulty non-return valve.
may be due to
6
remedy
Check maintenance.
Check maintenance.
Check maintenance.
Check maintenance and
replace sealing rings if
necessary.
Check maintenance.
Check maintenance.
©Velleman Group nv

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