Replacing The Seal On The Drain Valve; Storing The Mistblower At The End Of The Season - Hardi NEPTUN Series Instruction Book

Replacing the seal on the drain valve

If the drain valve leaks, the seal and the seat can be replaced as follows:
1. Make sure that the tank is empty and clean.
2. The valve must be closed and the lever loose.
3. Remove the U-clip A and pull the connection part B. Now the
whole valve can be removed.
4. Check the condition and wear of the cord and the valve C,
replace the seal D and reassemble.
5. Grease all o-rings F before assembling.
6. Fit the U-clip A again.
DANGER! Do not enter the tank – the parts can be replaced from
outside the tank!
WARNING! Use a protective face mask when disassembling the
drain valve!

Storing the mistblower at the end of the season

When the spraying season is over, you should devote some extra time on the machine before storing it. If any chemical
residues are left on the mistblower for a long period, it can reduce the service life of the components. To keep the mistblower
intact and protect the components, you should perform the tasks as part of an off -season storage programme.
1. Clean the mistblower completely inside and out, as described in 'Cleaning the mistblower' . Make sure that all the
valves, hoses and auxiliary equipment have been washed with detergent and rinsed with clean water afterwards, to
ensure that no traces of chemical products are left on the mistblower.
2. Replace the o-rings and repair any possible leaks.
3. Empty the mistblower completely and let the pump work for fi ve minutes. Open all the valves to drain as much
water as possible from the circuit.
4. Pour approximately 50 litres Glycol / anti-freeze mixture in the tank, in order to lubricate diaphragms, valves etc. to
prevent it from drying up, and aff ected from that. (1/3 anti-freeze and 2/3 water)
Alternatively to anti frees, products like sun fl ower cooking oil can as well be used, but Glycol / anti-freeze liquid is
bets.
5. Start the pump and operate the controls of the 3-way valves, operating unit, etc. so that the anti-freeze is distributed
throughout the entire circuit. Open the main ON/OFF valve and the distribution valves so that the anti-freeze is
delivered through the nozzles also. The anti-freeze prevents the o-rings, seals, diaphragms, etc. from drying out.
6. Lubricate all the lubrication points according to the lubrication scheme. Disregard the normal lubrication intervals
in this case.
7. When the mistblower is dry, remove the rust from any possible scratches or marks in the paint, and touch up the
paintwork.
8. Remove the pressure gauge and store it a vertical position in a frost-free location.
9. Apply a thin layer of anti-corrosion oil (e.g. SHELL ENSIS FLUID, CASTROL RUSTILLO or similar) to all metal parts. Do
not apply to hoses or rubber parts. See page of lubrication products.
10. All the electric plugs and sockets must be kept in plastic bags to protect them from damp, dirt and rust.
11. Remove the control box from the tractor (if fi tted), and store it in a clean, dry place (in-house).
12. To protect the mistblower against dust, it can be covered with a tarpaulin. Make sure that it is ventilated to prevent
condensation.
6 - Maintenance
B
A
D
E
B
A
C
F
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