Motor Cooling Fan Inspection And Cleaning; Tightness Inspection; Disposing Of The Vacuum Cleaner; Wiring Diagrams - Nilfisk VHW320 Manuel D'instructions

VHW320 - VHW321 - VHW420 - VHW421 - VHW440 - VHW441 ClassII Div2 Group F, G
Original instructions

Motor cooling fan inspection and cleaning

WARNING!
These operations can only be carried out by trained
and qualified personnel.
Periodically clean the motor cooling fan to prevent the motor
from overheating, especially if the vacuum cleaner is used in a
dusty place (1, Fig. 5).
Any other servicing should be performed by an authorized
representative.
Commissioning after longer standstill
Before recommissioning after a longer standstill, measure the
insulation resistance of the drive motor. With values ≤ 1 kΩ per
volt of nominal voltage, the winding is too dry. In such case, do
not use the vacuum cleaner and contact the manufacturer's
service center.

Tightness inspection

Hoses check
Figure 15
Make sure that connecting hose is in a good condition and
correctly fixed (1).
If the hose is damaged, broken or badly connected to the
unions, it must be replaced.
When sticky materials are treated, check for possible clogging
along the hose, in the inlet and on the baffle plate inside the
filtering chamber.
Scrape the inlet (2) from the outside and remove the deposited
waste as indicated in the figure.
Filtering chamber seal check
Figure 16
If the gasket (2) between the collection container (3) and the
filter chamber (1) is torn, broken, etc. replace the gasket (2).
US

Disposing of the vacuum cleaner

Dispose of the vacuum cleaner in compliance with the laws in
force.
C430

Wiring diagrams

Figure 18
1. Plug
2. Vacuum cleaner
3. Circuit breaker
Model
1phase
Item Part
VHW320 - VHW321
120V 230V
Circuit breaker Z8 39683 Z8 39681
Q1
Box for Q1 4083901448
Model
3phase
Item Part
VHW320 - VHW321
220V 460V 575V
Circuit breaker 8 39680 8 39679 8 39678
Q1
Box for Q1 4083901448
Model
3phase
Item Part
VHW420 - VHW421
220V 460V 575V
Circuit breaker 8 39681 8 39679 8 39679
Q1
Box for Q1 4083901448
Model
3phase
Item Part
VHW440 - VHW441
220V 460V 575V
Circuit breaker 8 39681 8 39680 8 39680
Q1
Box for Q1 4083901448
14
VHW320 - VHW321 - VHW420 - VHW421 - VHW440 - VHW441 ClassII Div2 Group F, G

TYPE PLATE

Type plate
Mod X
1
S/N X
2
P/N X
3
Typ X
10
T code X 14°F≤ Ta ≤+X
11
X
13
Nilfisk S.p.A
Industrial-vacuum.nilfisk.com
X : model Type X : current
1 7
X : serial number X : total weight
2 8
X : month and year of
9
X : part number
3
production
X : voltage X : model description
4 10
X : number of phases X : temperature code
5 11
X
: Max ambient
X : frequency 12
6 temperature
Model Code reading
VHW320 N4 ..... C2D2
02/2017 02/2017
X V X ~ X A
4 5 7
X Hz X kg
6 8
X
9
°F
12
X
14
X
Conforms to
15
X
Certified to
16
Made in Italy
Via Porrettana 1991
41059 Zocca (MO) - ITALY
X : Hazardous Marking
13
X : control number
14
X : US standards
15
X : Canadian standards
16
.....
for internal use (can be
present or not)
Certified for Class II Div2
for internal use (can be
present or not)
Feeding voltage:
N1 120V – 1 ph
N2 230V – 1 ph
N5 220V
N4 460V
N7 575V
Model Name:
VHW320
VHW321
VHW420
VHW421
VHW440
VHW441
15
Original instructions
US
C430