Cleaning Method - Hitachi RCUE40AG2 Service Manual

Maintenance
Nº Name

Chiller unit
 
Water inlet
 
acid-proof pump
 
hose
 
Cleaning solution

Water outlet
Circulation tank

(tank for cleaning) (tank for cleaning)
Tank for waste

water collection

Step 1:
Cleaning circuit installation

Step 2: Confi rmation of circulation circuit
An acid-proof pump is run while water is put in the tank for cleaning, and confi rm

Step 3: Cleaning
pag. 158
SMGB0003 rev.0 - 11/2006
6.4.1. Cleaning method>
Cleaning whole system using the existing pump and cleaning only water circuit
of chiller unit (single body cleaning) are the popular cleaning methods. Here, it is
explained how to do concretely in simple body cleaning.
Chiller unit operation is stopped.
−
Circulation pump operation is stopped.
−
Water inlet/outlet connection is removed from the water circuit of unit, and another
−
circulation circuit used the acid-proof pump is installed separately from the water
circuit.
if water is not leaked from the cleaning circuit.
−
If cleaning hose is fi xed.
−
if devices installed around the unit is not contaminated by cleaning liquid, possible to
−
overfl ow from the tank
if air is not clogged.
−
if there is no strange noise.
−
Drain off the water in cleaning circuit.
−
Adequate quantity of cleaning agent is put in the tank for cleaning and while diluting it,
−
operate the acid-proof pump so that the diluted cleaning liquid circulates in the circuit.
Perform the circulation cleaning during prescribed time (it is determined in each
−
cleaning agent, although it differs from liquid type or density). It is necessary to
change the cleaning time according to the dirtiness.