Nederman VAC 20 User manual

Vacuum unit
VAC 20
2018-11-16 2130204(04)
Original instrucon manual
EN INSTRUCTION MANUAL
Translaon of original instrucon manual
CS NÁVOD K OBSLUZE
DA BETJENINGSVEJLEDNING
DE BEDIENUNGSANLEITUNG
ES MANUAL DE INSTRUCCIONES
ET KASUTUSJUHEND
FI KÄYTTÖOHJEET
FR MANUEL D’INSTRUCTION
HU FELHASZNÁLÓI KÉZIKÖNYV
IT MANUALE D’ISTRUZIONE
NL HANDLEIDING
NO BRUKSANVISNING
PL INSTRUKCJA UŻYTKOWANIA
PT MANUAL DE INSTRUÇÕES
RU РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
SK NÁVODNAOBSLUHU
SV ANVÄNDARMANUAL
Instruconmanual

VAC 20
2

VAC 20
3
Declaraon of conformity................................................................................................ 4
ECO design informaon........................................................................................................ 7
Figures.................................................................................................................................................................. 8
English...............................................................................................................................................................15
Češna.............................................................................................................................................................33
Dansk.................................................................................................................................................................. 51
Deutsch...........................................................................................................................................................69
Español............................................................................................................................................................89
Ees...................................................................................................................................................................107
Suomi............................................................................................................................................................ 125
Français...................................................................................................................................................... 143
Magyar........................................................................................................................................................161
Italiano.........................................................................................................................................................179
Nederlands...........................................................................................................................................197
Norsk...............................................................................................................................................................215
Polski.............................................................................................................................................................. 233
Português...............................................................................................................................................253
Русский......................................................................................................................................................271
Slovensky................................................................................................................................................291
Svenska...................................................................................................................................................... 309

VAC 20
4
Declaraon of conformity
Declaraon of conformity
We, AB Ph. Nederman & Co., declare under our sole responsibility that the
Nederman product:
VAC 20 (Part No. **, and stated versions of **) to which this declaraon relates,
is in conformity with all the relevant provisions of the following direcves and
standards:
Direcves
2006/42/EC, 2014/30/EU.
Standards
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
The name and signature at the end of this document, is the person responsible
for both the declaraon of conformity and the technical le.
English
EN
Konformitätserklärung
Wir, AB Ph. Nederman & Co., erklären in alleiniger Verantwortung, dass das
Nederman Produkt
VAC 20 (Art.-Nr. **, und bauartgleiche Versionen **), auf welches sich diese
Erklärung bezieht, mit allen einschlägigen Besmmungen der folgenden
Richtlinien und Normen übereinsmmt:
Richtlinien
2006/42/EC, 2014/30/EU
Normen
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Name und Unterschri am Dokumentende geben diejenige Person an, die für
die Konformitätserklärung und die technische Dokumentaon verantwortlich ist.
Deutsch
DE
Overensstemmelseserklæring
AB Ph. Nederman & Co. erklærer som eneansvarlige, at følgende produkt fra
Nederman:
VAC 20 (Arkel nr. **, og erklærede versioner af **), som denne erklæring
vedrører, er i overensstemmelse med alle de relevante bestemmelser i de
følgende direkver og standarder:
Direkver
2006/42/EC, 2014/30/EU.
Standarder
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Navnet og underskrien sidst i dee dokument lhører den person, der
er ansvarlig for såvel overensstemmelseserklæringen som den tekniske
dokumentaon.
Dansk
DA
Declaración de Conformidad
Nosotros, AB Ph. Nederman & Co., declaramos bajo nuestra única
responsabilidad que el producto Nederman:
El producto, VAC 20 (Ref. nº **, y las versiones basadas **),, al que hace
referencia esta declaración, cumple con todas las disposiciones aplicables de las
Direcvas y normas que se indican a connuación:
Direcvas
2006/42/EC, 2014/30/EU.
Normas
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
El nombre y rma que guran al nal de este documento corresponden a la
persona responsable, tanto de la declaración como de la cha técnica.
Español
ES
Prohlášení o shodě
My, společnost AB Ph. Nederman & Co., prohlašujeme na svou zodpovědnost, že
výrobek Nederman:
VAC 20 (díl č. **, a uvedla, verze **), ke kterému se toto prohlášení vztahuje, je
v souladu se všemi příslušnými ustanoveními následujících směrnic a norem:
Směrnice
2006/42/EC, 2014/30/EU.
Normy
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Na konci tohoto dokumentu je jméno a podpis osoby zodpovědné za prohlášení
o shodě a soubor technické dokumentace.
Češna
CS
Vastavusdeklaratsioon
Meie, AB Ph. Nederman & Co., kinnitame ja kanname ainuisikuliselt vastutust
selle eest, et eevõe Nederman toode:
VAC 20 (arkkel nr **, ja märkis versioonid **), mida käesolev deklaratsioon
puudutab, vastab kõigi järgnevate direkivide ja standardite kohaldatavatele
sätetele:
Direkivid
2006/42/EC, 2014/30/EU.
Standardid
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Dokumendi lõpus on nii vastavusdeklaratsiooni kui ka tehnilise toimiku eest
vastutava isiku nimi ja allkiri.
Ees
ET

VAC 20
5
Dichiarazione di conformità
AB Ph. Nederman & Co., dichiara soo la propria esclusiva responsabilità che il
prodoo Nederman:
VAC 20 (Art. N. **, e le versioni di deo **) al quale è relava la presente
dichiarazione, è conforme alle disposizioni delle seguen direve e normave:
Direve
2006/42/EC, 2014/30/EU.
Normave
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Il nome e la rma in calce al presente documento appartengono al responsabile
della dichiarazione di conformità e della documentazione tecnica.
Italiano
IT
Megfelelőségi nyilatkozat
Az AB Ph. Nederman & Co. vállalat teljes felelőssége tudatában kijelen, hogy
a(z)
VAC 20 (cikkszám: **, és módosíto verziói **) termék, amelyre ez a nyilatkozat
vonatkozik, megfelel az alábbi irányelveknek és szabványoknak:
Irányelvek:
2006/42/EC, 2014/30/EU.
Szabványok:
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
A dokumentum végén található név és aláírás a megfelelőségi nyilatkozatért és a
műszaki dokumentációért felelős személy neve és aláírása.
Magyar
HU
Declaração de conformidade
Nós, AB Ph. Nederman & Co., declaramos sob nossa inteira responsabilidade
que o produto Nederman:
VAC 20 (Argo nº ** e as versões do indicado **), ao qual esta declaração se
refere, está em conformidade com todas as disposições relevantes das seguintes
direvas e normas:
Direcvas
2006/42/EC, 2014/30/EU.
Normas
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
O nome e a assinatura no nal deste documento são os da pessoa responsável
pela declaração de conformidade e pelo cheiro técnico.
Português
PT
Deklaracja zgodności
Firma AB Ph. Nederman & Co. niniejszym deklaruje z pełną odpowiedzialnością,
że oferowany przez nią produkt VAC 20 (nr części ** i oznaczenie wersji **), do
którego odnosi się ta deklaracja, spełnia wszystkie odpowiednie wymagania
poniższych dyrektyw i norm:
Dyrektywy
2006/42/EC, 2014/30/EU.
Normy
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Na końcu niniejszego dokumentu znajdują się imię, nazwisko oraz podpis osoby
odpowiedzialnej za deklarację zgodności oraz dokumentację techniczną.
Polski
PL
Conformiteitsverklaring
Wij, AB Ph. Nederman & Co, verklaren in uitsluitende aansprakelijkheid dat het
product van Nederman:
VAC 20 (Arkelnr. **, en verklaarde versies van **), waarop deze verklaring van
toepassing is, in overeenstemming is met alle relevante voorschrien van de
volgende richtlijnen en normen:
Richtlijnen
2006/42/EC, 2014/30/EU.
Normen
EEN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Naam en handtekening onder dit document zijn van degene die
verantwoordelijk is voor zowel de Verklaring van Overeenstemming als het
technische document.
Nederlands
NL
Samsvarserklæring
Vi, AB Ph. Nederman & Co, erklærer på eget ansvar at Nedermans produkt:
VAC 20 (Del nr. **, og ualte versjoner av **) som denne erklæringen gjelder
for, er i overensstemmelse med følgende direkver og standarder:
Direkver
2006/42/EC, 2014/30/EU.
Standarder
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Navnet og signaturen l slu i dee dokumentet lhører vedkommende som er
ansvarlig for både samsvarserklæringen og den tekniske len.
Norsk
NO
Déclaraon de conformité
Nous, AB Ph. Nederman & Co., déclarons sous notre seule responsabilité que le
produit Nederman :
VAC 20 (Réf. **, et les modèles basés sur les réf. **) auquel fait référence la
présente déclaraon est en conformité avec toutes les disposions applicables
des direcves et normes suivantes :
Direcves
2006/42/EC, 2014/30/EU.
Normes
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Le nom et la signature en bas de ce document apparennent à la personne
responsable de la déclaraon de conformité et du chier technique.
Français
FR
Vaamustenmukaisuusvakuutus
Me, AB Ph. Nederman & Co., vakuutamme yksinomaan omalla vastuullamme,
eä Nederman-tuote
VAC 20 (tuotenro **, ja totesi versioita **), jota tämä vakuutus koskee, on
seuraavien direkivien ja standardien kaikkien asianmukaisten säännösten
mukainen:
Direkivit:
2006/42/EC, 2014/30/EU.
Standardit
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Tämä asiakirjan lopussa oleva nimi ja allekirjoitus ovat henkilön, joka vastaa sekä
vaamuksenmukaisuusvakuutuksesta eä teknisestä edostosta.
Suomi
FI

VAC 20
6
Декларация о соответствии
Компания AB Ph. Nederman & Co. со всей ответственностью заявляет, что
оборудование Nederman:
VAC 20 (№ по каталогу **, и заявил, версии **), к которому относится
данная декларация, соответствует всем требуемым положениям
следующих директив и стандартов.
Директивы
2006/42/EC, 2014/30/EU.
Стандарты
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Сотрудник, поставивший свою подпись под данным документом, отвечает
как за соблюдение декларации о соответствии, так и за достоверность
технических данных.
Русский
RU
Försäkran om överensstämmelse
Vi, AB Ph. Nederman & Co., försäkrar under eget ansvar a Nederman-
produkten:
VAC 20 (arkelnr **, och fastställda versioner av **.), som denna försäkran
avser, överensstämmer med alla llämpliga bestämmelser i följande direkv och
standarder:
Direkv
2006/42/EC, 2014/30/EU.
Standarder
EN ISO 12100, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
Namn och namnteckningen i slutet av dea dokument är den person som
ansvarar både för försäkran om överensstämmelse och för den tekniska
dokumentaonen.
Svenska
SV
**
40103102, 40103122, 40103132, 40103142, 40103152, 40103162, 40103172, 40103222, 40103232, 40103252, 40103262, 40103272, 40103282, 40103292,
40103352, 40103362, 40103372, 40103382, 40103392, 40103402, 40103412, 40103462, 40103482, 40103492, 40103502, 40103512, 40103522, 40103532,
40377162
AB Ph. Nederman & Co.
P.O. Box 602
SE-251 06 Helsingborg
Sweden
Frank Christensen
VP Operaons EMEA
2018-11-16
Vyhlásenie o zhode
My, spoločnosť AB Ph. Nederman & Co., vyhlasujeme na svoju výhradnú
zodpovednosť, že výrobok Nederman:
Produkt VAC 20 (č. dielu **, a uviedla, verzia **), ktorého sa toto vyhlásenie
týka, je v zhode so všetkými príslušnými ustanoveniami nasledujúcich smerníc a
noriem:
Smernice
2006/42/EC, 2014/30/EU.
Normy
EN 12100, EN 60335-2-69, EN60335-1, EN55014-1, EN55014-2, EN61000-3-2
EN61000-3-3: 2008.
Meno a podpis na záver tohto dokumentu patria osobe zodpovednej za
vyhlásenie o zhode a technickú dokumentáciu.
Slovensky
SK

VAC 20
7
#Product informaon requirements VAC 20-1500 VAC 20-2500 VAC 20-3000 VAC 20-4000
1. Overall eciency (%). 49,1 47,9 47,3 45,7
2. Measurement category (A-D).(1) DDDD
3. Eciency category (Total). Total Total Total Total
4. Eciency grade at opmum energy eciency point. 61 61 61 61
5. Did fan eciency calculaon use an integrated VSD. No No No No
6. Year of manufacture. See the product’s nameplate.
7a. Manufacturer’s name. See the product’s nameplate.
7b. Commercial registraon number. See the product’s nameplate.
7c. Place of manufacturer. See the product’s nameplate.
8Model number. See the product’s nameplate.
9a Rated motor power input (kW). See secon ‘3.1 Technical data’ .
9b Flow rate at opmum energy eciency (m3/h). 2000 2500 3000 3000
9c. Pressure at opmum energy eciency (Pa). 19500 20000 19500 19900
10. Rotaons per minute at the opmum energy eciency
point (rpm).
4250 4480 4480 4470
11. Specic rao.(2) 1,24 1,25 1,24 1,24
12. Fan disassembly, recycling and disposal at end-of-life: See the secons for maintenance and recycling.
13. To minimize environmental impact and ensure opmal life
expectancy for the fan:
Carefully follow the installaon, use and maintenance instrucons for the
fan.
14. Addional items.(3)
1. According to Comission regulaon (EU) No 327/2011 implemenng Direcve 2009/125/EC.
2. The stagnaon pressure measured at the fan outlet divided by the stagnaon pressure at the fan inlet at the opmal energy
eciency point of the fan.
3. Addional items used when determining the fan energy eciency that are not described in the measurement category and not
supplied with the fan.
ECO design informaon

VAC 20
8
Figures
1
2
3
45
6
7
8
1 2
3
4
5
6
7
8
1
2
3
1
1
2
4
3

VAC 20
9
12
3
4
7
11
10
5 6
8
9
5

VAC 20
10
JB
110 °C
CAS
P
V1
TVS
200
N L1 L1
ASC
Valve
Motor 110 °C
P
Start Up Valve
C°
Close Valve
Open Valve
(1) (2) (1) (2) (1) (2)
(1) (2) (3)
Fan Bearing
Temperature
Supervision
Anti Surge Motor
Damper
Compressed Air
Low Pressure
Supervision
(Accessory)
P>3Bar
= Closed T<110 °C
= Closed
32 33 34 35
30 31
33 34 35 36
31 32
76 77 78
(1) (2) (3) (4) (5) (6)
High Vacuum Starter (Advance) & VAC ASC By PLC
S1 S2
L1
B
C
A
ASC
S1 S2 22 23 24 25
22 23 24 25
Adaptation kit for VAC ASC by
PLC and Older control system
High Vacum Starter (Advance)
(1)
(2)
(3)
6
JB
110 °C
CAS
P
V1
TVS
200
110 °C
P
Start Up Valve
C° Close Valve
Open Valve
(1) (2) (1) (2) (1) (2) (1) (2) (3)
Fan Bearing
Temperature
Supervision
Anti Surge Motor
Damper
Compressed Air
Low Pressure
Supervision
(Accessory)
P>3Bar
= Closed T<110 °C
= Closed
33 34 35 36
31 32 76 77 78 28 29
24V
AC(E)
Switched
+24VDC
27
0VDC0VDC 0VAC
33 34 35 36
31 32 76 77 78 28 2927
(1) (2) (3) (4) (5) (6) (7) (8) (9)
High Vacuum Control Panel (HVCP) & VAC ASC By PLC
HVCP
VAC By
PLC
(10) (11)
N L1 L1
ASC
Valve
Motor
7

VAC 20
11
1214 mm
47.80"C-C
770 mm
30.31"C-C
(4x) 13 mm
1/2"
1256 mm 49.45"
2372 mm 93.39"
587 mm 23.11"(VAC 20)
121 mm
4.76"
200 mm
7.87"
1510 mm
59.45"
1070 mm 42.13"
204 mm
8.01"
415 mm
16.34"
488 mm
19.21"(VAC 20)
543 mm
21.38"(VAC 12)
645 mm 25.39"(VAC 12)
2450 mm 96.46"
VAC 12-3000
VAC 20-3000
VAC 20-4000
250 mm
9.84"
200 mm
7.87"
VAC 20-1500
VAC 20-2500
Ø
Ø
Ø
Ø
8

VAC 20
12
~35 mlATF
70-85 mm
X
U1
V1
W1
W2
U2
V2
X
9
11
10
10mm (0.39")
12
13
1
6
7
5
4
3
2

VAC 20
13
14
15
16

VAC 20
14
High Vacuum Starter
Current Sensor
S1 S2
L1
S2S1
I < I >
M E1 MaxMin
E1 M
24
25
12 14
11
12 14
11
31
2
Valve
Motor
L1
Close Valve
L1
Open Valve
N
A
C B
A1
A2
Min A1
A2
Max
22(-)
23(+)
A2
A1
R1
Min Max
R1
17
Min
!
Max
!A B C S1 S2 22 23 24 25
MaxMin
A1 11 M
E1 E2 E3
14 12 A2
EIH
A1 11 M
E1 E2 E3
14 12 A2
EIH
5
R1
Settings (min & max relay)
T1 = min
T2 = min
Hyst % = min
Ie % (amps) = See text
M16x 1,5
5-10
M16x 1,5
5-10
x x
Releco
12
1
14
11 2
3
4 (A1)
6
5(A2)
Releco
2
11
S10
A
2
5
RELECO
DC24V
1 3 2
VAC Terminal Box Control Cabinet
18

VAC 20
15
EN
1 Preface............................................................................................................................................................................................16
2 Safety...............................................................................................................................................................................................16
2.1 General ..........................................................................................................................................................................16
3 Descripon ...................................................................................................................................................................................17
3.1 Technical data..............................................................................................................................................................17
3.2 Funcon..........................................................................................................................................................................18
3.2.1 An surge control..........................................................................................................................................18
4 Main components ....................................................................................................................................................................19
4.1 Overview........................................................................................................................................................................19
4.2 Connecons..................................................................................................................................................................19
4.3 Start-up valve...............................................................................................................................................................19
4.4 Flow restrictor FR 160.............................................................................................................................................19
4.5 An surge control......................................................................................................................................................20
4.6 Bearing temperature switches...........................................................................................................................20
4.7 Oponal: Compressed air switch......................................................................................................................20
5 Before installaon ....................................................................................................................................................................20
5.1 Delivery check.............................................................................................................................................................20
5.2 Installaon requirements .....................................................................................................................................21
5.2.1 Locaon..............................................................................................................................................................21
5.2.2 Foundaon........................................................................................................................................................21
6 Installaon....................................................................................................................................................................................21
6.1 Installing VAC 20 ........................................................................................................................................................21
6.1.1 Indoor installaon ........................................................................................................................................21
6.1.2 Outdoor installaon ....................................................................................................................................22
6.1.3 Electrical installaon...................................................................................................................................22
6.1.4 Compressed air installaon.....................................................................................................................23
7 Using VAC 20 ...............................................................................................................................................................................23
7.1 Before start-up............................................................................................................................................................23
7.2 Inial start-up..............................................................................................................................................................24
7.2.1 Checking the direcon of rotaon.......................................................................................................24
7.2.2 Checking the Y/D me seng................................................................................................................24
7.2.3 Inial start-up with pilot signal cable.................................................................................................24
7.2.4 Adjusng An Surge Control by PLC...................................................................................................24
7.2.5 Adjusng An surge control by oponal adapon kit..............................................................25
8 Maintenance ...............................................................................................................................................................................26
8.1 General inspecon....................................................................................................................................................26
8.2 Belt transmission.......................................................................................................................................................27
8.3 An surge control......................................................................................................................................................27
8.4 Start-up valve...............................................................................................................................................................27
8.5 Flow restrictor FR 160.............................................................................................................................................27
8.5.1 Adjusng FR 160............................................................................................................................................28
8.5.2 Flow restrictor oil..........................................................................................................................................28
8.6 Fan bearings temperature....................................................................................................................................28
8.7 Fan bearings.................................................................................................................................................................28
8.8 Motor bearings...........................................................................................................................................................29
Figures............................................................................................................................................................................................... 8
Table of contents
English
Instrucon manual

VAC 20EN
16
1 Preface
Read all product documentaon and product idencaon plate carefully before
installaon, use, and service of this product. Replace documentaon immediately if lost.
Nederman reserves the right, without previous noce, to modify and improve its products
including documentaon.
This product is designed to meet the requirements of relevant EU direcves. To maintain
this status, all installaon, maintenance and repair is to be done by qualied personnel
using only Nederman original spare parts and accessories. Contact the nearest authorized
distributor or Nederman for advice on technical service and obtaining spare parts. If there
are any damaged or missing parts when the product is delivered, nofy the carrier and the
local Nederman representave immediately.
2 Safety
This document contains important informaon that is presented as either a warning,
cauon or note. See the following examples:
WARNING! Risk of personal injury.
Warnings indicate a potenal hazard to the health and safety of personnel, and how that
hazard may be avoided.
CAUTION! Risk of equipment damage.
Cauons indicate a potenal hazard to the product but not to personnel, and how that
hazard may be avoided.
NOTE! Notes contain other informaon that is important for personnel.
2.1 General
NOTE! For reasons of safety, this manual must be studied before using the product for
the rst me.
NEVER start the unit before installaon is complete.
WARNING! Risk of eye injury.
Always stop the unit before looking into the outlet. The fan rotates at high speed and
even small parcles of dust could severely damage the eyes.
WARNING! Risk of cung injury.
Ensure the dust collector is aached to the unit’s inlet and the silencer aached to the
outlet. Sucon at the inlet is very powerful and any contact with the fan wheel could
result in severe injury.
8.9 Spare parts....................................................................................................................................................................29
9 Recycling........................................................................................................................................................................................29
10 Acronyms and abbreviaons..............................................................................................................................................29

VAC 20
17
EN
WARNING! Risk of personal injury.
The belt guard must always be ed except during maintenance work on the
transmission. Maintenance must be undertaken by qualied personnel. Ret the guard
when the work is nished. The Figures in this manual without the guard in place are for
illustraon purposes only and do not imply that the unit ever is to be run without the
guard.
WARNING! Risk of electric shock.
The thermal switches in the unit must always be enabled. Switch o and lock the mains
maintenance switch or remove the mains fuses before starng the inspecon.
CAUTION! Risk of equipment damage.
The dust collector must be posioned before the vacuum unit. The dust collector must
be designed and maintained to prevent coarse parcles and dust from being sucked into
the fan. The ltering of ne dust must be sucient to prevent undue wear to the fan.
The unit must be stopped immediately for inspecon by suitably qualied personnel if
the fan rotates unevenly, or if damage to the fan or its bearings is suspected.
3 Descripon
3.1 Technical data
Table 3-1: Technical data
VAC 20-1500 20-2500 20-3000 20-4000
Operang temperature -20 °C to +40 °C (60 °F to 104 °F)
Dimensions See Figure 8
Inlet mm(in) Ø 200 (7.78")
Outlet mm (in) Ø 200 (7.78") Ø 200 (7.78") Ø 250 (9.84") Ø 250 (9.84")
Weight without motor, kg (lb) 370 (815) 370 (805) 370 (805) 370 (805)
Total weight*, Europe and Asia, kg (lb) 573 (1263) 616 (1358) 626 (1380) 698 (1539)
Total weight*, North America, kg (lb) 546 (1204) 614 (1354) 635 (1400) 786 (1733)
Total weight*, Brazil, kg (lb) 505 (1113) 602 (1327) 628 (1385) 663 (1462)
Maximum vacuum, kPa (in.W.G.) 20.1 (81) 21.5 (86) 21.5 (86) 22 (88)
Specied capacity, m3/h /kPa (cfm/in.W.G.) 1500/20
(883/80)
2500/20
(1471/80)
3000/19
(1766/76)
4000/16.5
(2354/66)
Maximum ow at rated motor power m3/h
(cfm)
2300 (1354) 3000 (1766) 3900 (2295) 5000 (2943)
Noise level
ISO 11201 dB(A)
71 74.5 74.5 74.5
Noise level**
ISO 11201 dB(A)
66 67 68 68
Motor data See motor label
Motor power, kW (HP) 22 (30) 30 (40) 37 (50) 45 (60)
Control voltage 24 V DC ± 10% (solenoid for 24 V AC enclosed)
* Motor weight included.
** With oponal silencer.

VAC 20EN
18
VAC 20-1500 20-2500 20-3000 20-4000
Compressed air quality Clean dry, ISO 8573-1 class 5
Required air pressure 6–8 bar (87–116 PSI)
Maximum air consumpon intermient 70 N-Litres/min (2.5 cfm)
Material descripon Powder coated steel, copper, stone wool insulaon.
Material recycling Approximately 95% to 97% of the weight.
FR 160 spring, see Figure 3.1 - six turns Ø 2
mm wire
2 - four turns Ø
2 mm wire
3 - six turns Ø
2,5 mm wire
-
* Motor weight included.
** With oponal silencer.
3.2 Funcon
VAC 20 is a series of vacuum units that operate for an air ow up to the level specied in
‘Table 3-1: Technical data’.
Units are delivered with dierent capacies, voltages, and frequencies. The motor is a
3-phase asynchronous motor. The motor power matches the unit’s capacity. The vacuum
source is a belt-driven high-pressure fan. The power consumpon of the fan increases with
increasing air ow. It is necessary to minimise the power requirement during Y/D - starng.
This is done by restricng the air ow while the motor is operang in Y-mode.
VAC 20 units have a start-up valve at the fan inlet. The valve is, apart from a small leakage
ow, closed when the unit is at stand sll and during start up in Y-mode. The valve will open
when the motor switches over to full power in D-mode. The valve is controlled from the
unit’s start and control unit.
See Secon ‘4.6 Bearing temperature switches’ regarding the bearing overheang cut-out
on VAC 20. See Secon ‘4.7 Oponal: Compressed air switch’ regarding compressed air
switch.
3.2.1 An surge control
A high pressure centrifugal fan operang with too small an air ow, will run in a surge. This
means that the operaon is not stable. A characterisc ‘pumping’ or ‘breathing’ sound can
be heard and the air stream at the fan outlet will be uneven. The vacuum generaon is
unstable and this can, under certain circumstances, cause the ducng to move in rhythm
with the pumping.
The motor current is closely related to the air ow through the fan. By monitoring the
current by means of a current transformer in the start and control unit, it is possible to
determine whether the ow is small enough to cause a surge. If this is the case, a valve
inside the vacuum unit will gradually open to let some more air into the fan.
There are two versions of VAC-20 with the ASC funcon. One is controlled with the current
transformer and the current sensing relays. The other version is controlled by the PLC in the
HV Control Panel and has the text ASC by PLC on the base label.

VAC 20
19
EN
4 Main components
4.1 Overview
Figure 1 shows the main components of the VAC 20 unit. These are as follows:
1. Acousc enclosure.
2. Motor.
3. 2-stage high pressure fan.
4. Start-up valve. SUV 200 which also serves as a back ush valve. 24 V DC is supplied as
standard but a solenoid for 24 V AC is also enclosed.
5. An surge valve. (TVS76, Control motor and silencer).
6. VAC 20-1500/2500/3000: Flow restrictor FR 160, see also Figure 4.
7. Manual reset thermal switch for the fan bearings.
8. Belt transmission.
The oponal inlet silencer is shown in Figure 2.
1. Oponal: Inlet silencer for extra low noise levels indoors.
4.2 Connecons
Figure 5 is a schemac diagram of the normal connecons to a VAC unit. Figure 5 shows the
normal connecons to VAC 20. These are as follows:
1. Exhaust duct.
2. Vacuum pipe from dust collector.
3. Dirt and water separator for compressed air. The separator is supplied with unit.
4. 6 mm (1/4”) tube air line to start-up valve. The line is supplied with unit.
5. Control cable for start up valve, thermal switches and ASC damper.
6. Oponal: Control cable for when not using ASC by PLC.
7. Motor power supply.
8. Oponal: Maintenance switch. This is required in most countries.
9. Start and control unit normally with Y/D-starng. Direct starng is also an opon.
10. Terminal box
11. Oponal: ASC terminal box for when not using ASC by PLC. Sold as an accessory.
4.3 Start-up valve
Figures 6and 7 show a circuit diagram for the control of the start-up valve. The solenoid
valve V1 is engaged only aer the start and control unit has switched over to D-mode. The
valve needs compressed air to work.
4.4 Flow restrictor FR 160
A ow restrictor, FR 160, is mounted close to the fan outlet on most VAC 20 units, see
Figure 4. The restrictor protects the motor from overloading by gradually closing a valve
restricng the air ow.
The ow restrictor is fully mechanical. It consists of a valve blade, Item 1, welded to a sha,
Item 3. The sha turns in ball bearings ed to the housing, Item 2. The spring, Item 6,
holds the blade in the normal open posion.

VAC 20EN
20
The spring keeps the blade fully open when the ow is lower than the restrictor seng
point. At the seng point, the blade starts turning and closes more and more as the
ow increases. This result in a ow restricted to a value corresponding to the nominal
motor power. The spring is correctly adjusted before delivery of the unit. See Chapter ‘8
Maintenance’ for readjustment of the spring (if necessary).
The ow restrictor is ed with a damper, see Figure 4 Item 4, to prevent the ow
restrictor from self oscillang. It consists of a cylinder lled with oil. In the cylinder a piston
moves freely. The damper only aects rapid movements that could cause self-oscillang.
Rapid movements are hindered by the oil that must pass by the piston in a small gap
between the piston and the cylinder wall.
4.5 An surge control
Figure 13 shows the main components of the An surge control. These are as follows:
1. Silencer.
2. Valve TVS 76.
3. Control motor. 24 V AC.
4. Cable.
5. Oponal: Current transformer. 100/1 A.
6. Oponal: Universal relay. 24 V AC.
7. Oponal: Current sensing relay, 2 units MAX and MIN. 24 V AC.
The version of the VAC controlled by the PLC in the HV Control Panel does not have the
components 5, 6 and 7.
4.6 Bearing temperature switches
The circuit trips at temperatures over 110 °C (230 °F) and the unit is stopped. Thermal
tripping results in an error indicaon in the starng equipment. Figures 6and 7 show a
circuit diagram for the overheang cut-out for the bearings on VAC 20. The circuit in the
start and control unit must require a manual reset. The voltage must not exceed 24 V.
4.7 Oponal: Compressed air switch
An oponal compressed air switch can be mounted in the vacuum unit to prevent it from
starng with no compressed air supply. No air supply must result in an error indicaon in
the start and control unit.
For electrical connecons, see gures 6 or 7 and also the Start and Control Unit manual.
The compressed air switch is wired in series with the thermal fuse. Use a jumper to connect
the terminals if no compressed air switch is used.
5 Before installaon
5.1 Delivery check
Check the VAC 20 unit for any transport damages. In case of damage or parts missing,
nofy the carrier and your local Nederman representave immediately. It is recommended
to transport the VAC 20 unit to the installaon site while sll in the factory packing.