Hardi ZENIT, Instruction Book

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6 - Ma int e n a nc e
6.9
When the spraying season is over, you should devote some extra time to the sprayer. If chemical residue is left over in the
sprayer for longer periods, it can reduce the life of the individual components. To preserve the sprayer intact and to pro-
tect the components, carry out following off-season storage program.
1. Clean the sprayer completely - inside and outside - as described in “Cleaning” in the “Operation” section. Make sure that
all valves, hoses and auxiliary equipment have been cleaned with detergent and flushed with clean water afterwards, so
no chemical residue is left in the sprayer.
2. Replace possible damaged seals and repair possible leaks.
3. Empty the sprayer completely and let the pump work for a few minutes. Operate all valves and handles to drain as
much water off the spraying circuit as possible. Let the pump run until air is coming out of all nozzles.
4. Pour appr. 3 gal. (11 liters) anti-freeze mixture consisting of 1/3 automotive anti-freeze and 2/3 water into the tank.
5. Engage the pump and operate all valves and functions on the MANIFOLD, operating unit, etc. allowing the anti-freeze
mixture to be distributed around the entire circuit. Open the operating unit main on/off valve and distribution valves so
the anti-freeze is sprayed through the nozzles as well. The anti-freeze will also prevent O-rings, seals, diaphragms etc.
from drying out.
6. Lubricate all lubricating points according to the lubricating scheme - regardless of intervals stated.
7. When the sprayer is dry, remove rust from possible scratches or damages in the paint and touch up the paint.
8. Remove the glycerine-filled pressure gauges and store them frost free in vertical position.
9. Apply a thin layer of anti-corrosion oil (e.g. SHELL ENSIS FLUID, CASTROL RUSTILLO or similar) on all metal parts. Avoid
oil on rubber parts, hoses and tires.
10. Relieve pressure from all hydraulic functions.
11. Wipe hydraulic snap-couplers clean and fit the dust caps.
12. Apply grease on all hydraulic ram piston rods which are not fully retracted in the barrel to protect against corrosion.
13. To protect against dust the sprayer can be covered by a tarpaulin. Ensure ventilation to prevent condensation.
After a storage period the sprayer should be prepared for the next season the following way:
1. Remove the cover.
2. Wipe off the grease from hydraulic ram piston rods.
3. Fit the pressure gauges again. Seal with Teflon tape.
4. Connect the sprayer to the tractor including hydraulics.
5. Check all hydraulic functions.
6. Empty the tank of remaining anti-freeze.
7. Rinse the entire liquid circuit on the sprayer with clean water.
8. Fill with clean water and check all functions.
P r epa rin g t he s p r aye r f or us e af t e r stor age
Off- s ea son stor age p ro g r am
Off- s ea son stor age