Nilfisk M90068 User Manual

Instructions/Spare Parts Manual

Nilfisk Model VHS255
Drum Top Vacuum

Nilfisk, Inc.

Industrial Vacuum Division

740 Hemlock Drive Suite 100

Morgantown, PA 19543

Tel: [phone]

Fax: [phone]

www.nilfiskindustrialvacuums.com

e-mail: [e-mail]

Under no circumstances may this vacuum
cleaner be used safely for the collection of
hazardous or toxic materials unless equipped
with a HEPA filter. Be sure to install the HEPA
filter according to Nilfisk’s written instructions. It
is never to be used in a classified (hazardous)
environment, or to collect combustible dust in a
non-classified environment.

Do not use this vacuum cleaner for the removal
of hazardous substances unless you are
licensed and/or certified for this work by the all
authorities having jurisdiction.

EMPTYING: If this vacuum cleaner is used to collect hazardous material, do not attempt to open
or empty its contents without personal protective clothing and respiratory protection. This
procedure must be completed in a contained environment. Contact with the cleaner, filters and
all other accessories used when picking-up hazardous materials must be handled according to
federal (EPA, OSHA), state and local regulations valid for the vacuumed substance.

ATTENTION EMPLOYER: Please ensure these instructions are made available to, and
understood by your employees or any other persons who may use this equipment.

This manual does not list all toxic and hazardous materials. It is the employer’s responsibility to
identify, for employees’ and others’ information, hazardous or toxic materials which may be
collected by this equipment. Such information must be communicated to your employees and
other potential users of this equipment.

CAUTION: This Nilfisk vacuum cleaner is
not to be used in classified (hazardous)
environments, as serious injury could
result.

Manual 01702482 (10-2015)

SAFETY INSTRUCTIONS

THIS VACUUM CLEANER IS DESIGNED FOR COMMERCIAL USE. ACCIDENTS DUE TO

MISUSE CAN ONLY BE PREVENTED BY THOSE USING THE MACHINE. READ AND FOLLOW

ALL SAFETY INSTRUCTIONS.

WARNING!

Note: The VHS255 has not been certified for sales or use in Canada.

To reduce the risk of fire, electric shock or injury, please
read and follow all safety instructions and caution
markings before use. This vacuum cleaner is designed to
be safe when used for cleaning functions as specified.
Should damage occur to electrical or mechanical parts,
the cleaner and/or accessory should be repaired by a
competent service technician or the manufacturer directly
before continuing use to avoid further damage to the
machine or physical injury to the user.

 Do not use outdoors.
 Do not leave the machine unattended when it is

plugged in. Unplug from the socket when not in use
and before performing maintenance.

 Do not use with a damaged cord or plug. To unplug

grasp the plug, not the cord. Do not handle plug or
cleaner with wet hands. Turn off all controls before
unplugging.

 Do not pull or carry by the power cord, close doors on

the cord, or pull the cord around sharp corners. Do not
run over the cord. Keep the cord away from heated
surfaces.

 Keep hair, loose clothing, fingers and all parts of the

body away from openings and moving parts. Do not
put any objects into openings or use with openings
blocked. Keep openings free of dust, lint, hair and
anything else that could reduce the flow of air.

 CAUTION: Do not use this device to vacuum dust

which may be considered hazardous to health without
a properly installed HEPA filter.

 Do not use to pick up flammable or combustible liquids

such as gasoline, or use in areas where they may be
present.

 Do not use to collect combustible dusts or use in an

area classified as combustible dust hazard.

 Do not use to collect hot or burning material such as

cigarettes, matches or hot ashes.

 The machine is not intended for use by young children

or infirm persons. Young children must be supervised
to ensure they do not play with or near the vacuum.

 Do not operate the vacuum without filters.

 Use only as described in this manual and

only with the manufacturers recommended
attachments.

 If the unit is damaged, dropped in water, or

left outdoors exposed to weather, it should
be serviced by a qualified repair technician
before further operation.

 Use extra care when cleaning on stairs or

overhead.

General Information

Before plugging in the machine, check the rating
plate located at the back of the vacuum. The
available voltage should be within 10% of the
rating of the machine.
Do not oil the motor(s). They are sealed and
permanently lubricated at the factory.

Service Information

To maintain consistent performance over the life
of your vacuum, read through these instructions
and keep them handy for future reference. If you
require service, contact the dealer from whom
you purchased the vacuum or an authorized
Nilfisk service location. For prompt and complete
service information, always refer to the model,
type and serial number indicated on the rating
plate.

IMPORTANT!

The machine is equipped with a specially
designed cord which if damaged must be
replaced with a cord of the same type.
Replacement cords are available from Nilfisk
dealers and at authorized service locations, and
must be installed by qualified personnel.

Manual 01702482 (10-2015)

GROUNDING / DOUBLE INSULATION

Grounding Instructions

Fig. A

Fig. B

Applicable to machines with a three-pin plug
This vacuum must be grounded. If it should
malfunction or breakdown, grounding
provides a path of least resistance for
electrical current, and reduces the risk of
electrical shock.

This vacuum is equipped with a cord having
an equipment-grounding conductor and
grounding plug. The plug must be plugged
into an appropriate outlet that is properly
installed and grounded in accordance with
local codes and ordinances.

box cover. Whenever the adapter is used,
the tab must be held in place by a metal

screw. If the power supply cord or the plug
end is damaged, it must be replaced
immediately by a qualified repair technician
or service location.

Use of a temporary adapter as described
here is prohibited in Canada, regardless of
whether the machine bears an NRTL mark
for Canada.

Servicing of double-

DANGER!

Improper connection of an equipment­grounding conductor can result in risk of
electric shock. Check with a qualified
electrician or service technician if you are
unsure whether the outlet is properly
grounded. Do not modify the plug provided
with the machine. If it will not fit the outlet,
have a proper outlet installed by a qualified
electrician.

This vacuum is intended for use on a
nominal 120V circuit and has a grounding
plug similar to the plug in Figure A.

A temporary adapter which looks like the
adapter in Figure B may be used to connect
this plug to a two-pole receptacle if a
properly grounded outlet is not available.
The temporary adaptor should only be used
until a properly grounded outlet designed to
accept the plug in Figure A can be installed
by a qualified electrician. The green colored
tab must be connected to a permanent
ground, such as a correctly grounded outlet

insulated equipment

In a double-insulated appliance, two
systems of insulation are provided instead of
grounding. No means of grounding is
provided on a double-insulated machine, nor
should means for grounding be added to it.
Servicing double-insulated equipment
requires extreme care and knowledge of the

system, and should only be performed by
qualified service personnel. Replacement
parts for a double-insulated machine must
be identical to the parts they replace. A
double-insulated device is marked

“DOUBLE INSULATION” or “DOUBLE
INSULATED” and will likely also bear the

symbol for double insulation, shown in
Figure B.

IMPORTANT

If the power supply cord or plug is damaged,
it must be replaced immediately by a
qualified repair technician or service
location.

Manual 01702482 (10-2015)

General Information

BEFORE CONNECTING THE MACHINE TO A POWER SUPPLY, check the electrical rating

plate located on the back of the motor head to see if the rated voltage agrees within 10% of the
voltage available.

DO NOT OIL the motor in this vacuum cleaner. It is permanently lubricated and sealed.

DO NOT OPERATE the vacuum cleaner without any filters. The Dry Filter, Wet/Dry Cartridge

Filter or HEPA filter should be installed to prevent dirt and dust from entering the motors.

This machine is equipped with a thermal breaker to protect the motor and other vital machine
parts from overheating. Should this breaker open, you will have to wait at least 5-10 minutes
before starting the machine again. You must reset the machine by switching the ON/OFF button.
While you are waiting, switch the machine off and unplug it. Check the hose and filters to be sure
that nothing is blocking the flow of air through the machine.

Service Information

UNPLUG THE MACHINE BEFORE PERFORMING ANY MAINTENANCE.

To obtain consistent performance over the life of your vacuum, read through these instructions
and keep them handy for future reference. If you require service, contact the dealer from whom
the vacuum was purchased, or the local authorized Service Station. Always refer to your Service
Station for complete service information. For prompt and complete service information, always
refer to the model, type and serial number indicated on the rating plate on the back of the motor
head.

IMPORTANT

The machine is equipped with a specially designed cord which if damaged, must be replaced by
a cord of the same type. This cord is available at authorized service centers and dealers and
must be installed by trained personnel.

Manual 01702482 (10-2015)

Machine Setup

The VHS255 Drum Top Vacuum
can be equipped for either dry or
wet/dry collection. Follow the
instructions below before attempting
to use your new machine to insure
that you have assembled the unit
correctly. NOTE: For wet/dry
collection, you must purchase the
optional float chamber & wet/dry
cartridge filter assembly (5) shown
below.

Dry Collection - Install the sack
filter support (2A) on the underside
of the motor head (1). See next
page for installation instructions.
Center the drum ring (4) onto a 30
or 55 gallon drum. Place the sack
filter (3) on top of the drum ring.
Carefully place the motor head/filter
support onto the drum ring and
clamp the entire assembly together
using the latches.

The sack filter should be used when
collecting dry powders or fine dust.
This washable filter is easy to clean
and will dry much faster than the
wet/dry cartridge filter. Small
amounts of water can be collected using the dry filter; however, it is best to allow the filter to dry
completely before resuming the collection of dry powder. An optional HEPA (2B) filter can be
added in place of the filter support (see HEPA filter installation).

Wet/Dry Collection - Center the drum ring (4) onto a 30 or 55 gallon drum. [Note: The float
chamber and wet/dry cartridge filter assembly (5) must be installed prior to collecting wet material
or liquids. Failure to do so can potentially result in damage to the motors and repairs will not be
covered under warranty.] Place the float chamber and wet/dry cartridge filter assembly into the

drum ring. Carefully place the motor head and sack filter onto the drum ring and clamp the entire
assembly together using the latches.

The wet/dry cartridge filter is best used for collecting large amounts of water. The float ball inside
the float chamber will restrict the flow of air in the vacuum hose when the drum is approximately
75% full. This will stop the drum from overfilling and will prevent water from entering the motor

head. The vacuum’s motors are cooled by circulating outside air through the motor head and will

continue to run even after the flow of air in the hose has stopped, but both motors should be turned
off once the drum capacity has been reached. The wet/dry cartridge filter can also serve as a dry
filter; however, it is best to allow the filter to dry completely before switching to dry collection. An
optional HEPA filter can be added (see HEPA Filter installation).

Manual 01702482 (10-2015)