Indoor Heat Exchanger Cleaning - Hitachi RCI Service Manual

12 Maintenance notes

12.1.2 Indoor heat exchanger cleaning

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Cleaning tools
C A U T I O N
Before starting any of the servicing work described in this chapter, turn off all main switches and fit safety locks
or warnings to prevent them from being accidentally switched on.
Necessary cleaning tools
The necessary cleaning tools for all indoor units are described below.
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
384
SMGB0063 rev. 1 - 10/2010
Tool
Water pump for cleaning
Cleaning water tank
Nozzle
Brush (non-metal)
Water pan pipe
Bucket
Philips screwdriver
Tweezers
Adjustable wrench
Megohmmeter
Cleaning product
Pressurised water gun
Adhesive tape
Rope
Vinyl sheeting
Gloves
Remarks
Use of a water pump equipped with a tank is
recommended
Approximately 18 litres
—
If the heat exchanger is very blocked with dust,
clean with a brush. The brush must be 25 to 35
mm in length.
Select a pipe in line with the installation
requirements.
2 to 5 litres
1
1
1
It should withstand 500V
Use a neutral cleaning product.
To apply the cleaning water
To secure the vinyl sheeting so that the room is
protected from the cleaning water
4 ropes measuring 1 m
Use vinyl sheeting that is 0.5 mm in thickness
—