Helios SilentBox SB Serie Notice De Montage Et D'entretien page 20

Installation and Operating Instructions
EN
CHAPTER 4
FUNCTION
NOTE
CHAPTER 5
USER MAINTENAN-
CE
m
DANGER
m
WARNING
Centrifugal Fan Boxes – SilentBox
4.1 Functional description SB..
The Silentboxes SB.. can be controlled in different speed stages by means of a speed control unit or electronically
(continuous).
NOTE!
In case of strong vibrations and/or noises, maintenance must be carried out by a specialist according to
chapter 1.5.
5.1 Opening the casing
1. Disconnect the unit from the power supply and secure it against switching on again!
2. Loosen snap locks and remove cover (Fig. 4/Fig. 6).
3. Then loosen the fixing screws on the motor bedplate and swing out motor impeller (Fig. 5/Fig. 7).
SB series with forward-curved impeller
Fig. 4
SB series with backward-curved impeller
Fig. 6
5.2 Cleaning
m DANGER!
An insulation/installation fault may result in electric shock!
Before cleaning, isolate the fan from the mains power supply and protect against being switching on again!
m WARNING!
The unexpected rotating impeller can crush fingers.
Before cleaning, isolate the fan from the mains power supply and protect against being switching on again!
– Clean casing and impeller with a damp cloth.
– The motor must not come into contact with water!
– Do not use aggressive cleaning agents that could damage the paintwork!
– High pressure cleaners or water jets are not permitted!
® SB ...
Fig. 5
Fig. 7
6