12
Hotels, offices and commercial
use
Two suction sockets can be employed
simultaneously if unit type 4000 is used.
Cleaning zones
The building can be divided into so-called
cleaning zones. A cleaning zone represents
the area cleaned by one person.
The suction sockets of a cleaning zone are
linked with a pipeline and connected to the
desired unit type.
With unit type 4000, two cleaning zones can
be connected (see Fig. 3-3).
Only one suction socket may be used at a
time without a drop in performance with unit
types 2000 and 3000.
Cleaning personnel
The number of required cleaning persons (R)
is calculated from the average cleaning
performance (A = 200 m
2
/h), the area to be
cleaned (F) and the specified cleaning time (t):
R = F / (t x A)
➜ Select central vacuum units, taking into
account the distance to the furthest
suction socket (design length) and the
number of simultaneous users.
Example:
R = 800 / (1.5 x 200) = 2.7
Result:
Three cleaning persons are required.
Cleaning zones 1 and 2
(two simultaneous users)
Design length up to 80 m:
Unit type 4000
Cleaning zone 3 (one user)
Design length up to 80 m:
Unit type 2000
➜ We recommend unit types 3000 and
4000 for commercial use (see Chap. 4,
Page 13).
Office building: F = 800 m
2
Three cleaning zones: t = 1.5 h
A = 200 m
2
/h
Fig. 3-3: Example for office building
A Cleaning zone 1
B Cleaning zone 2
C Cleaning zone 3
D Unit type 4000 (cleaning zones 1 and 2)
E Unit type 2000 (cleaning zone 3)