Ruwac industriesauger NA 7-11 User manual

Instruction manual
Wet Separator
NA 7-11
06.2014
Caution! Please do not use the equipment until you have read this instruction manual!
Translation of the original instruction manual

2
Contents
Page
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16/17
18
19
20
21
22
23
24
Section
1
2
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
5
5.1
5.2
6
7
8
8.1
8.2
8.3
8.4
9
9.1
9.2
9.3
9.4
10
11
12
12.1
12.2
13
14
15
16
Contents
Introduction
Type designations
Health and safety
Information on workplace safety
Safety precautions
Transport
Installation and storage
Installation
Cleaning
Maintenance
Dismantling / disposal
Zones
Applications and use for the intended purpose
Description of the function
Liquid consumption
Intended use
Improper use
Classification by dust class
Setup and function
A 7-11 Standard
A 7-11 with peripheral equipment
Technical specifications
Accident prevention
Commissioning
Establishing potential equalisation
Switching the industrial vacuum system on and off
Filling with liquid
Checking the function of the degasification valve
Emptying / Cleaning
Emptying / cleaning the container
Cleaning / Changing the moisture separator
Cleaning / Checking the viewing panel
Assembly of the wet separator
Vacuum gauge
Changing the filter cartridges
Fill level monitoring
Visually by the viewing panel
Automatically by the fill level indicator
Maintenance check list
Troubleshooting
Spares and consumable parts
Peripheral equipment for use when handling reactive materials

3
1. Introduction
Thank you for choosing a Ruwac wet
separator. This is a top-quality product
featuring state-of-the-art disposal tech-
nology. Ruwac wet separators are
designed in accordance with health
and safety directives and standards
and are subject to continuous function-
al testing and improvement. You have
chosen a high-quality product
renowned for its excellent reliability,
robustness and long service life.
n order to get the most from this prod-
uct, we recommend that you carefully
follow the instructions given in this
manual. This will also ensure that you
operate the unit in compliance with
accident prevention regulations. t will
also prevent faults that could result in
downtime and unnecessary costs.
Please contact us if you have any
problems or enquiries. We will be glad
to help.
Ruwac Industriesauger GmbH
Telefon: 0 52 26 - 98 30 - 0
Telefax: 0 52 26 - 98 30 - 44
General instructions
This A 7 wet separator is a state-of-the-art product and has been designed, manufactured and tested in accor-
dance with the recognised safety regulations.
However, use of this equipment could involve the risk of injury or death of users and third parties or damage to the wet
separator and other equipment.
All persons involved in the installation, commissioning, operation and maintenance of the wet separator must carefully
read and observe the following instructions. These precautions and instructions are designed to protect your health
and safety.
Keep this instruction manual in a conve-
nient place for future reference.
2. Type designations
A 7-11 A = wet separator
7 = container capacity 7 litre
11 = 1.1 kW

4
3. Health and safety
Read the instruction manual
carefully before installing or
commissioning the wet separa-
tor, paying particular attention to
the safety precautions. Follow all
instructions exactly.
The customer must ensure that
the wet separator is only operat-
ed and maintained by suitably
skilled personnel. Operators
must be instructed and trained
by an authorised person before
using the equipment for the first
time. Staff must be informed dur-
ing this training of all relevant
safety precautions, prohibited
uses and any potential risks
involved.
The wet separator must only be
operated, maintained and
repaired by authorised, skilled
and suitably trained personnel.
All working procedures which
endanger the safety of persons,
the wet separator or the working
environment are strictly forbid-
den.
The operator must immediately
report any safety critical faults
which occur on the equipment to
the person in charge.
Check the fill level in the wet sep-
arator through the viewing panel
before commissioning and
before each start-up, and at regu-
lar intervals during operation.
The Ruwac wet separator is a state-of-
the-art product and is safe to operate.
However, the safety of this equipment
cannot be guaranteed if it is used by
untrained personnel, operated incor-
rectly or used for purposes other than
those intended
3.1 Information on health
and safety
The equipment must be inspected at
regular intervals in accordance with
German safety regulations BGV A3.
Observe the warning signs on the
equipment.
Do not allow under-age persons to use
the equipment.
Switch off the equipment during breaks
in working.
Ensure that repair work is only carried
out by authorised RUWAC service
technicians.
During maintenance and repair work,
observe the special safety precautions
for working with electrical equipment
and hazardous dust.
Switch off and unplug the wet separa-
tor before repairing any faults.
Do not modify, bypass or remove safe-
ty devices or guards.
f a fault or hazard occurs, switch off
the wet separator immediately.
Always switch off and unplug the wet
separator before carrying maintenance
and replacing parts.
Check the mains cable at regular inter-
vals for signs of damage.
Do not use the wet separator if the
power supply cable is damaged.
Ensure that the power supply cable
cannot be driven over, crushed,
strained or damaged in any way.

5
3. Health and safety
3.2 Safety precautions
The wet separator must be suitably
earthed to discharge electrostatic
charges - or must be used with electri-
cally conductive vacuuming acces-
sories.
Flammable gas caused by chemical
reactions (e.g. liquid with aluminium
dust) may develop in the separator
during operation and idle time. All
NA 7-11 separators are equipped with
a degasification valve.
The electrical power supply must be
properly earthed in order to ensure
that electrostatic charges are dis-
charged.
Do not by-pass or disable safety
devices. Vacuuming accessories and
user retrofits connected to the vacuum
unit must be conductive to dissipate
static charges.
Switch off the wet separator immedi-
ately whenever the suction points are
not in use (e.g. during a break in work
or when the suction hose is blocked).
Suction of a non-homogenous materi-
als is prohibited, lest chemical reac-
tions between them occur.
VOR INBETRIEBNAHME:
1. Potentialausgleic erstellen. Erdungskabel an
Bearbeitungsmasc ine ansc ließen.
2. Geeignete Flüssigkeit einfüllen.
- Der Flüssigkeitsstand ist wä rend des
Betriebs zu kontrollieren.
- Gegebenenfalls Flüssigkeit aufzufüllen.
- Bei Bedarf - mindestens aber täglic -
ist der Be älter zu reinigen.
BEFORE START-UP:
1. Establis t e potential equalization.
Connect t e ground cable wit mac ine.
2. Fill in a suitable liquid.
- T e liquid level as to be monitored during
operation.
- If necessary fill-up t e liquid.
-As needed – but at least daily – t e liquid
container as to be cleaned.
If you notice a reduction in suction power, proceed as follows:
1. Switch off the vacuum unit
2. Clean the moisture separator / filter, replace it if necessary
3. Check the hose for deposits, clean it if necessary.
4. Check the vacuum gauge.
WAR I G!
On finishing work, ALWAYS store the NA 7-11 in a well-ventilated area.
Risk of explosion!
f the wet separator is fitted with an additional earthing clip / angled socket, this
will carry an information plate:
Tends the suction medium to develop hydrogen in conjunction with water, it is
necessary to add an appropriate additive (e. g. Hysol) to the precipitation liquid.
Tends the suction medium to develop foam in conjunction with the precipitation
liquid, it is necessary to add defoamer to the precipitation liquid.
.

3. Health and safety
6
The user must ensure that...
... the floor on which the wet separator
is placed has an adequate load bear-
ing capacity.
..,. because of the ventilation slots
arranged at the side of the wet separa-
tor, keep it a minimum of 20 cm away
from walls and adjoining objects.
... the wet separator is always emptied
and cleaned before it is removed from
service or stored.
... the wet separator is always posi-
tioned on a level surface (base) if
removed from service or stored.
... the parking brake (if fitted) is always
applied.
... the wet separator is secured in posi-
tion by additional means and cannot
roll away when stored on a non-slip-
proof floor or sloping surfaces with
gradients of more than 10°.
3.4 Positioning and storage
The user must ensure that...
... the equipment is only cleaned with
water or standard commercially avail-
able cleaning agents.
... the person cleaning the wet separa-
tor wears personal protective equip-
ment appropriate to the medium.
See Section 9
CAUTIO !
Before cleaning the equipment, check
that the cleaning agents to be used will
not react with the material that was
vacuumed up.
3.6 Cleaning
The user must ensure that...
... the equipment has been cleaned
before it is transported.
... the liquid container is locked using
the lever.
... all load handling equipment used
during transportation is suitable for the
task and has a minimum load capacity
greater than the weight of the wet sep-
arator being moved.
... the wet separator is secured to pre-
vent sliding and tipping during trans-
portation in a vehicle.
3.3 Transportation 3.7 Servicing
The user must ensure that...
... the floor on which the wet separator
is placed has an adequate load bear-
ing capacity.
... the vacuum hose (and any other
accessories) are connected.
3.5 Assembly
3.8 Disassembly / Disposal
The user must ensure that...
... wet separators are emptied and
cleaned before dismantling.
... ndustrial vacuum systems are dis-
posed of only in accordance with
national legislation.
... the dispose of the equipment at the
end of its service life will be in accor-
dance with applicable legal regulations.
The user must ensure that...
... maintenance is only carried out on
wet separators that are empty and
clean.
... The equipment must be discon-
nected from the power supply
before any service or repair work is
performed on it.
... before working on the equipment,
unplug it from the mains.
Storage
O LY WITHOUT liquid:
Temperature: 0° - 30°C
Humidity: 30% - 95%,
non-condensing

7
3. Health and safety
Defini ion of zone classifica ion
Zone 1:
Area in which a dangerous explosive
atmosphere comprising a mixture of air
and flammable gases, vapours or mist
can occasionally form in normal use.
Flammable gas caused by chemical reac ions (e.g. liquid / aluminium dus ) may develop in he
separa or whils i is swi ched on and whils i is idle.
Zonenein eilung - Größ mögliches Gefährdungspo en ial
3.9 Zones
Degasifica ion valve
Zone 1
Within an area r = 100mm
around the exhaust port
Degasifica ion valve
Zone 2
Within an area r = 200mm
around the exhaust port
Zone 2:
Area in which a dangerous explosive
atmosphere comprising a mixture of air
and flammable gases, vapours or mist
does not usually occur or may occur
briefly in normal use.

8
4. Applications and use for the intended purpose
Wet separator, suitable for Zone 22,
designation according to ATEX 3D
for the precipitation of dusts in a liquid.
The NA 7-11 wet separator can be
used to precipitate dry, wet, hot,
smouldering and explosive, fine and
coarse media (except for explosives to
§ 1...) in water or other liquids as may
be necessary.
The wet separator NA 7-11 must be
operated only with a sufficient quantity
of receiving liquid appropriate to the
material to be vacuumed.
Always check the safety data sheets
for information about handling the
materials to be vacuumed in combina-
tion with the receiving liquid.
WAR I G!
It is important to use only water or other O -FOAMI G liquid for wetting the
vacuumed material.
Operation of the wet separator if the fill
level of the liquid receiver is above the
maximum or below the minimum level.
Failure to check the safety data sheets
for information about handling the
materials to be vacuumed in combina-
tion with the receiving liquid.
Positioning the wet separator in rooms
(or outdoors) where temperatures can
drop below freezing. This could cause
the materials and liquid to become fully
or partially frozen.
4.4 Improper use
4.3 Intended use
The vacuumed material is drawn
through a suction connection into the
wet separator. Air, dust and liquid are
swirled around inside the liquid con-
tainer. The dust particles become wet
on contact with the liquid, causing
them to collect in the form of sediment
at the bottom of the container.
Liquid that is drawn in along with the
transport air collects on the moisture
4.1 Functional description
f the NA 7-11 is operated with a water
seal, the water consumption at an air
flow rate of
130 m3/h = approx. 0.26 l/h.
4.2 Liquid consumption
separator positioned in the suction air
stream and drips into the liquid con-
tainer. Any remaining dust particles are
separated out in the three filter car-
tridges (dust class M as standard; dust
class H available as an option). The
vacuum is generated by a side chan-
nel blower.
Check the fill level in the wet separator through the viewing panel before
commissioning and before each start-up, and at regular intervals during
operation.
Avoid any bodily contact with the
hose - even during the suction
process.
Do not route the hose over the shoul-
der or around the body.

9
4. Applications and use for the intended purpose
The A 7 - 11 wet separator is fitted with three dust class M filter cartridges.
Dust class H cartridges are available as an option.
4.5 Classification by dust class
Zone 22
CE-mark
All products carry the "CE mark"
(European Conformity). The Declara-
tion of Conformity is included in the
delivery documentation.
.
Wet separator suitable for intake of
flammable dust in zone 22.
WARN NG! This appliance contains dust that is hazardous to
health. Emptying and servicing, including removal of the dust
bin, must only be carried out by qualified personnel wearing the
appropriate personal protective equipment (PPE). Do not oper-
ate the appliance unless the complete filtration system is fitted.

10
5. Setup and function
5.1 A 7-11 Standard
1 Housing sheet steel
2 Cover sheet steel
5 Liquid container, 7 litre capacity
7.1 Moisture separator
7.2 Filter cartridges, 3 x 0.1 m2
8 Hose connection Ø30 mm
10.1 Side-channel blower
10,2 Motor circuit breaker On / Off
16.1 Locking lever
16.2 Lifting mechanism
18 Vacuum gauge
26 Feet
35 Noise level with soundproofing
36 Noise suppressor
43 Shut-off valve Ø30 mm
54.1 Degasification valve
54.2 Vent
58 Viewing panel
79 Swirl filter / insert
81 Holder for filter cartridges

11
5. Setup and function
5.2 A 7-11 with peripheral equipment
1 Housing sheet steel
2 Cover sheet steel
5 Liquid container, 7 litre capacity
7.1 Moisture separator
7.2 Filter cartridges, 3 x 0.1 m2
8 Hose connection Ø30 mm
10.1 Side-channel blower
10,2 Motor circuit breaker On / Off
12.1 Steering castor Ø75 mm,
with brake
12.2 Steering castor Ø75 mm
14 Push handle
16.1 Locking lever
16.2 Lifting mechanism
17 Control unit
18 Vacuum gauge
35 Noise level with soundproofing
36 Noise suppressor
41 Fill Level Monitoring
43 Shut-off valve Ø30 mm
54.1 Degasification valve
54.2 Vent
56 Accessories box
58 Viewing panel
67 Cable holder
79 Swirl filter / insert
81 Holder for filter cartridges
87 Hose holder
98 Earthing cable for equipotential
bonding

12
6. Technical specifications
Drive type: Single-phase AC
Motor power (kW): 1.1
Voltage (Volts): 230
Power consumption (Amps): 7.6
Protection class: IP65
Frequency (Hz): 50
Housing: Sheet steel
Sound pressure level, SPL (dB (A)): 60
Air flow rate (m3/h): 130
Sustained vacuum (mbar): - 145
Short period vacuum (mbar): - 235
Bypass air valve: Yes
Vacuum Monitoring: Pressure gauge with setting dial
Filter type: Cartridge
Filter category: M (H optional)
Moisture filter: removable
Liquid separator: removable
Liquid volume (l): 7
Water consumption (l/h): approx. 0.26
Length (mm): 800
Width (Standard) (mm): 480
Width (Peripheral Equipment) (mm): 570
Height (Standard) (mm): 755
Height (Peripheral Equipment) (mm): 850
Weight (Standard) (kg): 91,5
Weight (Peripheral Equipment) (kg): 95

13
7. Accident preventionr
1. Guards, mechanical hazard
protection
2. Electrical hazard protection 3. Protection against
hazardous media
All moving parts have fixed guards
which are securely fastened and can
only be removed using tools.
Residual risk:
Using tools to remove the fastenings
for the fixed guards when the unit is
still running can cause injury.
All live components on the unit are
insulated or covered with fixed,
securely fastened guards which can
only be removed using tools. The
machine complies with the require-
ments of Protection Class as per
EN 60 335-1.
Residual risk:
Electric shock hazard. Using tools to
remove fixed guards when the power
supply is not unplugged can cause
injuries due to electric shock.
Risk of explosion associated with gas
formation: nstallation of a degasifica-
tion valve.
On finishing work, always store the
wet separator in a well-ventilated area.
Residual risk:
Failure to check the degasification
valve is working correctly.
Storing the wet separator without
cleaning it.
The wet separator has the following hazard prevention features:

14
8. Commissioning / Operation
Attach the earthing clip to the metal
part of the suction connection.
Connect the angle socket to the pro-
cessing machine.
8.1 Establishing equipotential bonding (when and earthing clip / angle socket is available)
8.2 Switching on / Switching off
Always wear suitable protective clothing
appropriate to the vacuum medium.
Apply the parking brake (if fitted) to
prevent the wet separator from rolling
away.
Switch on the vacuum unit. Switch off the vacuum unit.

8. Commissioning / Operation
Fill the liquid directly into the liquid
container.
Use the viewing panel to monitor the
level of the liquid.
Use the viewing panel to monitor the
level of the liquid.
15
8.3 Filling with liquid / topping up
8.3.1 Filling with liquid
8.3.2 Topping up with liquid
8.4. Checking the function of the degasification valve
The degasification valve should always
be checked for correct operation
before commissioning and each time
before starting the wet separator.
Ensure that the machine is switched
off before carrying out this check. The
valve head should slot into place with
gentle pressure and automatically
return to its original position with the
help of the spring.
Fill the liquid directly into the liquid
container
OPTIO AL:
f the NA 7-11 if equipped with a warn-
ing light, this will light up to indicate a
low liquid level in the wet separator.
The vacuum unit will then shut down
automatically.

16
9. Emptying / Cleaning
Switch off the wet separator and apply
the parking brake - if fitted.
The container must be emptied and
cleaned when the pointer of the vacu-
um gauge is above the factory set
value.
n this case, either the filters or mois-
ture separator is dirty, or the container
contains sludge.
The container should also be cleaned
once the M N MUM level has been
reached..
Then remove the suction hose.
Then unlock the container. Pull the container out of the housing
using the handle.
Take hold of the recessed grips on the
side of the container.
f an earthing clip is fitted, take this off
together with the hose.
9.1 Emptying / cleaning the container

17
9. Emptying / Cleaning
Carefully lift the housing of the mois-
ture separator.
Pulling out the hose automatically acti-
vates the shut-off valve, thereby clos-
ing the suction connection.
Suction connection is closed by the
shut-off valve.
Remove the swirl filter insert. f neces-
sary, also wash out the strainer using a
strong jet of water.
Replace the strainer only when it is
clean.
The contents of the container should
be emptied out into a suitable vessel.
Dispose of the vacuumed material in
accordance with all applicable, nation-
al environmental regulations
Take the container out of the housing,
using both hands..
Carefully lift the housing of the mois-
ture separator.
Clean the container using a strong
water jet.
The wet separator including the mois-
ture separator should be cleaned regu-
larly.
How often cleaning is needed will vary
depending on duration of use and the
quantity and properties of the materials
that were vacuumed.

9. Emptying / Cleaning
The viewing panel should be regularly
wiped clean, inside and out, using a
soft cloth
Lift the shut-off valve to allow insertion
of the hose. (arrowed)
The window of the fill level indicator
should also be regularly wiped clean,
inside and out, using a soft cloth.
To insert the container into the housing, reverse the order.
Switch off the vacuum unit.
Pull the container out of the
housing using the handle.
Lift the moisture separator housing.
Clean the moisture separator using a
strong water jet. Dry until only slightly
moist (use compressed air if neces-
sary).
f despite being cleaned the moisture
separator is still dirty it must be
replaced. Remove the moisture sepa-
rator from the housing. Then insert a
new moisture separator.
The shut-off valve in the liquid contain-
er avoids the possibility that after the
container has been cleaned an attempt
may be made to run the suction unit
without reinstalling the swirl filter.
9.2 Cleaning / Changing the moisture separator
9.3 Cleaning / Checking the viewing panel
9.4 Assembly of the wet separator
18

19
First ensure that the wet separator is switched off.
11. Changing the filter cartridges
f the filter cartridges are extremely
dirty, replace them. Always change all
three cartridges at the same time
To do this, simply remove the filter
cartridges and dispose of them in
accordance with environmental regula-
tions.
The vacuum gauge indicates the vacu-
um present inside the suction housing.
Setting pointer:
Type Hose
Ø
mbar
NA 7-11 30 - 130
10. Vacuum pressure gauge
f the flow velocity in the hose falls
below 20m/sec - according to the vac-
uum gauge reading - switch the unit off
immediately.
This visual warning device (vacuum
gauge) operates reliably when a hose
of length 2.5m - 5.0m and diameter 30
mm is connected to the industrial vac-
uum unit. (Open cross-section without
nozzles, etc.)
Setting pointer
Vacuum pressure gauge
This ensures that the flow velocity in
the hose does not fall below the safe
value of 20 m/sec. f the pointer indi-
cates a value H GHER THAN the fac-
tory setting, then the flow velocity in
the hose will be less than 20 m/sec.
That means that safe operation of the
unit can no longer be guaranteed.
There is then the possibility that dust
may have been deposited in the hose.
During operation, the pressure gauge
pointer must indicate a value LOWER
THAN the factory setting (see values).

20
12. Fill level monitoring
Regularly check the level via the view-
ing panel
12.1 Visually by the viewing panel
f necessary, fill the liquid directly into
the liquid container
f necessary, fill the liquid directly into
the liquid container
12.2 Automatically by the fill level indicator
Fill Level ndicator (optional) automatic
shutdown at low liquid level.
f the NA 7-11 if equipped with a warn-
ing light, this will light up to indicate a
low liquid level in the wet separator.
The vacuum unit will then shut down
automatically.