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HARDI
®
N-SERIES 3-PT SPRAYER DIAPHRAGM OPERATOR'S MANUAL
7.0 Off-Season Storage
When the spraying season is over, you should de vote some extra time
to the Spray er. If chem i cal res i dues are left over in the spray er for long
periods, it can reduce the life of the individual com po nents. To pre serve
the sprayer and pro tect the com po nents, carry out the following off-
sea son stor age pro gram:
1. Clean the sprayer completely - inside and outside - as described
under "Cleaning The Spray er" (section 6.1). Make sure that all
valves, hos es and auxiliary equipment have been cleaned with
de ter gent and fl ushed with clean wa ter afterwards, so no chem i cal
residues are left in the sprayer.
2. Replace any damaged seals and repair any 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
out of the spraying circuit as pos si ble. Let the pump run until air is
coming out of all the nozzles.
4. Pour in a mixture of ethylene glycol base antifreeze and water at the
ratio for the desired temperature protection (there will be a small
amount of water left in the hoses, pump and bottom of tank). The
volume of the mixture needs to be enough keep the tank sump full
while the pump is running fl uid through the entire circuit.
5. En gage the pump and op er ate all valves and func tions of the
plumbing system. Spray the spraygun (optional) into the tank until
antifreeze sprays out to make sure the line is full of antifreeze.
Open the distribution valves so the an ti freeze is sprayed through
the nozzles as well. The an ti freeze will also pre vent O-rings, seals,
di a phragms etc. from dry ing out.
6. When the sprayer is dry, re move rust from any scratch es or
damages in the paint and touch up the paint.
7. Lubricate all lubricating points according to the lu bri cat ing scheme
regardless of intervals stated.
8. Re move the glycerine-fi lled pres sure gaug e and store in a vertical
position in frost free con di tions.
9. Apply a thin layer of an ti cor ro sive oil (e.g. SHELL ENSIS FLU ID,
CASTROL RUSTILLO or sim i lar) on all metal parts. Avoid oil on
rubber parts, hoses and tires.