Hardi Mercury Covamax series, Operator'S Instruction Manual, Page: 56 / 110

5 - Operation
5. 2
Adjusting Pressure equalisation
Pressure equalisation on machines fitted with HARDI EVC or
Braglia CB/2 control units are adjusted using these steps;
• With the boom section valves open, run the sprayer at normal
average spraying pressure.
• Note the reading on the pressure gauge (B)
• Close the first section valve (1) by turning off at the
switchbox.
• When system pressure has stabilised, adjust the first
equalisation valve (A) until the original spraying pressure is
restored, then reopen the valve at switchbox.
• Repeat the procedure until both valves have been balanced.
μ Attention: After service procedures it is recommended to re-
calibrate equipment before spraying. The equalisation procedure
is generally only required after servicing, changing nozzle size or
when compensating for worn nozzles.