Technical data

16
Central vacuum systems
Choice of the central vacuum cleaner
Decisive factors in the choice of a central unit.
1. the number of operators working simultaneously
2. the pipe length.
If we consider that in normal condition every 1,000
m
2
of surface works 1 operator, the length of the
tubes is lower than the vacuum power of the
motors. In a building of 1,500 m
2
you need about
30 inlet valves and about 300 m of hose. Airlosses
calculation are not requested if we consider this
indication. If not so please contact the technical
office Disan.
3. the quantity of dust that is vacuumed. In the
buildings with many people (offices, banks, hotels,
theatres, etc.) we advise dust container capacity
in order to avoid many emptying.
Considerations about the number of operators
working simultaneously needed
From the graph we can deduce that in normal
conditions the attendants do not work simultaneously
on the system.
If in a hotel work 6 attendants, on average the
system is used by 4 operators at the most, while
the other 2 persons do other works.
6°
5°
4°
3°
2°
1°
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
N
u
m
b
e
r
o
f
a
t
t
e
n
d
a
n
t
s
Daily hours
4 3 4 2 2 3
Number of effective attendants
Choice of the cleaning
accessories
Approximate calculation of labour for
the complete installation of the system
Approximate estimate of the working hours needed
to install a system with 15 inlet valves. If the
system has more inlet valves, use as model the
needed hours with a proportional calculation of
the hours in the schedule.
INLET LABOUR
VALVES HOURS
16
2 8,30
3 10,30
4 12,30
515
617
719
8 21,30
9 23,30
10 25,30
11 29
12 31
13 33
14 35,30
15 37,30
Z 855
CHOICE OF THE CLEANING ACCESSORIES CODE
Deluxe set
with flexible 7,5-m-hose SZN301
with flexible 9-m-hose SZN303
Deluxe Super set
with flexible 7,5-m-hose SZN301S
with flexible 9-m-hose SZN303S
with flexible 11-m-hose SZN305S
Standard set
with flexible 7,5-m-hose SZN302
with flexible 9-m-hose SZN308
Standard Super set
with flexible 7,5-m-hose SZN302S
with flexible 9-m-hose SZN308S
Garage set
with flexible 9-m-hose SZN307
Animal care tools
with flexible 9-m-hose SZN347
Professional set
with flexible 9-m-hose SZN309
See Disan general catalogue, Disan price list and
Disan instructions of use.
Please notice: inlet valves and cleaning accessories
are interdependent. If you choose cleaning tools
with on-off switches on the handle of the hose, you
necessarily have to install inlet valves with pin-jacks.