Hitachi RCD-2.5FSN2, Service Manual, Page: 418 / 429

12 Maintenance notes
406
SMGB0077 rev.0 - 01/2013
N O T E
1 Set the pressure of the water pump so as not to damage
the funs.
2 Any cleaning water left behind will rust the fins. Set the
pump pressure to between 2.5 and 5 kg/cm
3
to protect the
fins.
Insert the nozzle of the pressurised water gun into the hole in the
cleaning water manifold. Start the water pump and clean the heat
exchanger of any dust.
After cleaning, spray and remove all remains of water.
1 After cleaning, fit the drain pan by lowering the rope.
2 Dry the remains of any water on the indoor unit.
3 Check the insulation of the drain pump using a megohmme-
ter. Check that the insulation is above 1 MΩ when 500V are
applied.
4 Connect the wiring.
5 Perform the neutralisation treatment after cleaning.