Zuwa UNISTAR 2000-A User manual

UNISTAR | COMBISTAR | NIROSTAR | ACOSTAR
Operating Instructions
Flexible Impeller Pumps
-Zumpe GmbH
Pumps for Pros

ZUWA Impeller Pumps
ZUWA Impeller Pumps
Operating Instructions (Translation)
Contents
1. Introduction.......………………………………………………... 3
1.1 Further applicable documents..............……………………… 3
1.2 Machine specifications.........……………………………….... 3
2. Declaration of conformity....................……………………..... 4
3. Safety....………………………………......……………….....… 6
3.1 Intended use........................................……………………… 6
3.2 Important safety instructions ………………………………... 6
3.3 Legend.......................………………………………..……….. 7
4. Technical data..............……………………………………….. 8
4.1 Type plate.....................……………………………………….. 9
4.2 Impeller materials.....................………………………………. 10
5. Transportation and unpacking..………………….…………… 10
6. Mounting...................................……………………...………. 10
6.1 Connection to hoses or pipes..........................……………... 11
6.2 Electrical connection................………………………………. 11
6.3 Operation with hand drill or cordless screwdriver......……… 13
6.4 Using other drive systems.................................……………. 14
7. Commissioning and operation......…………………………… 14
8. Storage..............……………………………………………….. 16
9. Maintenance......……………………………………………….. 16
9.1 Routine inspection.........………………………………………. 16
9.2 Cleaning.............……………………………………………….. 16
9.3 Disassembling the pump...........…………………………….... 16
9.4 Replacing components..………………...……………………. 21
9.5 Assembling the pump................……………………………… 22
9.6 Mounting and dismounting of transmission for V-belt drive.. 22
10. Accessories.......……………………………………………….. 24
10.1 Dry run protection..........………………………………………. 24
10.2 Flow control...................………………………………………. 24
10.3 Mechanical pressure switch......……………………………… 25
11. Troubleshooting..……………………………………………….. 26
12. Environmentally compatible disposal.......…………………… 26
13. Performance curves.....……………………………………….. 28

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1. Introduction
These operating instructions apply for the following pump types:
with motor without motor
UNISTAR 2000-A UNISTAR 2001-A
UNISTAR 2000-B UNISTAR 2001-B
UNISTAR 2000-C UNISTAR 2001-C
COMBISTAR 2000-A COMBISTAR 2001-A
COMBISTAR 2000-B COMBISTAR 2001-B
NIROSTAR 2000-A NIROSTAR 2001-A
NIROSTAR 2000-B
NIROSTAR 2000-C plus
NIROSTAR 2001-B
ACOSTAR 2000-A
The manual is intended for all users of the ZUWA impeller pumps which are
listed here.
1.1 Further applicable documents
► Parts lists with exploded drawings
1.2 Machine Specifications
All of the pumps are available in the following designs:
► Series 2000 – complete unit: Pump with electric motor, directly flanged
► Series 2000 PT – PT version: Pump with electric motor, coupling and
coupling protection
► Series 2001: Pump without motor and with bare shaft
complete unit PT version without motor

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2. Declaration of conformity

ZUWA Impeller Pumps
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3. Safety
3.1 Intended use
The pumps are designed for dry-well installation. Make sure that the motor
remains dry (protection class IP 55).
Pump types
UNISTAR Multi-purpose pump with aluminium casing designed for
transportingcleanorcontaminateduidsnotcontaining
abrasive substances. Not suitable for handling foods and
abrasiveorcorrosiveuids.
COMBISTAR Pump made from stainless steel (all parts which come into
contact with the liquid) and aluminium (cover), also suitable
for abrasive or slightly corrosive liquids.
Not suitable for foods.
NIROSTAR Stainless steel pump that is particularly suitable for
corrosive and abrasive liquids, as well as for food and
drinks.
ACOSTAR Syntheticpumpperfectforuidswithvariousviscosities,
acids, bases and solvents.
3.2 Important safety instructions
The manufacturer shall not be held liable for damage resulting
from nonobservant to the operating instructions.
► Store these instructions in such a way that they are accessible at all times
for pump operating personnel. Urge employees to read and follow these
instructions. Do not remove adhesive labels showing technical information.
► Observe plant-related specifications and provisions.
► Have work carried out by specialist personnel or personnel briefed
according to the VDE-standard.
► Only carry out work on the pump when the pump is not in operation and
the drive has been disconnected from the main power supply.
► In case of dangerous (e.g. hot, poisonous, explosive) pumped media,
use protective equipment.
► Do not pump any liquids that are corrosive to the pump material.

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► Do not pump any liquids containing particles of diameter greater than 2 mm.
► Do not use pumps under water.
► Do not allow pumps to run without liquid for longer than one minute.
► Only use genuine replacement parts, otherwise the warranty shall cease to
be valid.
► Impeller and seals are wear parts and wear out over time
3.3 Legend
Danger of death and severe injury
Danger of death and severe injury due to electric shock
Danger of light bodily injuries and material damage
Information, note

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UNISTAR 2000-A
UNISTAR 2001-A
UNISTAR 2000-B
UNISTAR 2001-B
UNISTAR 2000-C
UNISTAR 2001-C
COMBISTAR 2000-A
COMBISTAR 2001-A
COMBISTAR 2000-B
COMBISTAR 2001-B
NIROSTAR 2000-A
NIROSTAR 2001-A
NIROSTAR 2000-B
NIROSTAR 2001-B
NIROSTAR 2000-C plus
ACOSTAR 2000-A
max.owrate in L/min
30
30
60
60
90
90
30
30
60
60
30
30
60
60
120
30
max. pressure in bar (with Perbunan impeller)
5
4
5
4
5
4
5
4
5
4
5
4
5
4
3
3
connections In/Out external thread (inches and nominal width in mm)
¾“
19
¾“
19
1“
25
1“
25
1¼“
32
1¼“
32
¾“
19
¾“
19
1“
25
1“
25
¾“
19
¾“
19
1“
25
1“
25
1¼“
¾“
19
max. speed
12 or 24-Volt motors: 3000 rpm
230- or 400-Volt motors: 2800 rpm
230- 400V
motor protection class
IP 55
max. temperature90°C (with plastic impeller 60°C)
60°C
max. suction height7 metres (dry 3 metres) maximum viscosity ofiud
20.000 mPas
sound pressure level
74 dB(A)
4. Technical data

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Antrieb:
00→nomotor,openshaft
01→doublebearingforbeltdrive
02→hydraulicdrive
03→airmotor
13→gearmotorDC12V
14→DC12V-S1
15→DC12V-KEB
24→DC24V-S1
25→DC24V-KEB
26→DC24V-IP67
34→DC48V
51→el.Motor230VspecialshaftACOSTAR
52→el.Motor400VspecialshaftACOSTAR
53→el.Motor230Vspecialshaft
55→el.Motor230VL/Rspecialshaft„C“
60→el.Motor110V/50Hzspecial shaft
61→el.Motor110V/50HzL/Rspecial shaft
62→el.Motor110V/60Hzspecial shaft
63→el.Motor230Vspecial shaft
64→el.Motor230Vstandardshaft
65→el.Motor230VL/Rspecial shaft
66→el.Motor230VL/Rstandardshaft
67→el.Motor230V/60Hzspecial shaft
68→el.Motor220V/60Hzspecial shaft
69→el.Motor230V/50HzspecialshaftATEX
70→el.Motor240V/60Hzspecial shaft
71→el.Motor400Vspecial shaft„C“
72→el.Motor400V/50HzspecialshaftATEX
73→el.Motor400Vspecial shaft
74→el.Motor400Vstandardshaft
75→el.Motor400VL/Rspecial shaft
76→el.Motor400V/60Hzspecial shaft
77→el.Motor480V/60Hzspecial shaft
78→el.Motor360V/60Hzspecial shaft
80→Liveranimotor230V
82→Liveranimotor400V
86→gearmotor.400V
98→combustionmotor2stroke
99→combustion motor 4stroke
PT→Pumpheadwithpumpcarrier
PF→Pumpheaddirectlyflanged
Impeller
(1st. digit)
1 →NBR
2 →EPDM
3 →FKM
4 →CR
5 →NR
6 →Alu
7 →brass
8 →stainless
9 →plastic
Bush
(2nd digit)
1 →Polyamide
2 →
3 →
4 →
5 →
6 →Alu
7 →brass
8 →ss
9 →ss-spec.
Seal type
(1st. digit)
1 →shaft seal
2 →mechanical seal
Seal material
(2nd digit)
shaft seal:
1 →NBR
2 →EPDM
3 →FKM
4 →CR
5 →VQM
6 →Eco-PE
7 →AWC
mechanical seal:
1 →ss-graphite-NBR
2 →tungsten-carbi-
de-NBR
3 →tungsten-carbi-
de-Viton
4 →Carbon-Cera-
mik-EPDM
5 →Carbon-Cera-
mik-FKM
6 →SIC-SIC-EPDM
7 →SIC-SIC-FKM
8 →SIS-SIC-NBR
Type plate, example:
note: ss = stainless steel
4.1 Type plate

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4.2 Impeller materials
Impeller pumps are equipped with NBR impellers as standard.
Material designation Suitable for: Properties
NBR
Acrylonitrile butadiene rubber
(Perbunan®, Buna-N®)
water,antifreeze,heat
transferuid,vegetable
oil and grease
high impact elasticity and
good mechanical strength
good for applications
involving high pressures
up to max. 5 bar
EPDM
Ethylene propylene diene
rubber(Keltan®,BunaEP®)
high temperatures,
acids and alkalis
high elasticity and very
good mechanical stability
FKM or FPM
Fluorocarbon rubber (Viton®,
Fluorel®)
oil, diesel, fuel oil, palm
oil, soy bean oil and
oleaginous wood
preservatives
very good chemical
resistance, low mechanical
strength
CR
Chloroprene rubber
(Neoprene®, Bayprene®)
food, drinks ameresistant,tearproof,
durable
plastic
(not for NIROSTAR 2000-
C plus)
water, mineral and
vegetable oils, diesel,
heattransferuid,
antifreeze
extremely tear resistant
and good mechanical
stabilitymax.uid
temperature 60°C
5. Transportation and unpacking
► After unpacking, immediately check the pump for completeness and damage.
► Immediately report any transit damage to the supplying company.
► Dispose of packaging material according to the respective local regulations.
6. Mounting
Danger
Danger of death due to electric shock
• Work on the electrics may only be carried out by specialists.

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Danger
Danger of injury from rotating components
• Cover drive and pump shaft.
Caution
Material damage due to overheating of engine
• Ensuresu󰀩cientspaceandairsupplyforthemotor.
Thepumpcanbefittedverticallyorhorizontally.Incaseofvertical
fitting, it is advantageous to direct the pump head downwards, so
that in case of leaking the motor is protected against escaping liquid.
6.1 Connection of hoses or pipes
Hoses or lines must be suitable for the respective pumped medium.
Avoid long suction lines.
Observe correct direction of rotation of pump,
indicated by an arrow on the type plate and the
lettering In – Out.
Affix hoses as follows:
• Screw suction line onto the side marked “In”.
• Screw pressure line onto the side marked “Out”.
• Verify that the connections are leaktight.
Inthecasethatthesuctionheightismorethan3metres,tfoot
valve in the suction line in order to prevent drainage of the pump
and suction line.
6.2 Electrical connection
6.2.1 Series 2000-A, 2000-B, und 2000-C
Danger
Danger of death due to electric shock
• Fit the pump’s electric circuit with a ground fault circuit interrupter.
• Fit a motor overload switch.

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230 Volt motors:
Thermal protection is fitted. Fitting of a motor overload switch is advisable.
400 Volt motors:
No thermal protection is fitted. Fitting of a motor overload switch is required
(available as accessory)
Direct current motors::
Protection against overcurrent by means of safety fuses:
• 12 Volt motors: 0,25 kW - 50 A; 0,37 kW – 80 A
• 24 Volt motors: 0,25 kW - 30 A; 0,37 kW – 50 A
The connecting cable must be adapted to the current intensities
(see type plate)!
Caution
Motor damage can arise due to unsuitable extension cable
• For extension cables of length up to 20 metres: Use cables with
at least the same cross section as the pump cable.
• For extension cables with a length of more than 20 metres: Use
cables with a larger cross section than the pump cable.
6.2.2 Series 2001-A, 2001-B und 2001-C
The pumps can, for example, be driven with the following drive systems:
► power drill
► gear motor
► hydraulic motor
► pneumatic motor
When using external drive systems, observe the manufacturer’s
instructions.

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Ensure correct speed and output of the drive system:
Max. speed 3000 rpm
Minimum output of the drive system:
• 370 Watt for types of series 2001 A
• 550 Watt for types of series 2001 B
• 1100 Watt for types of series 2001 C
Impeller pumps require an increased
starting torque.
For pumps with three-phase motor,
observe the direction of rotation of the
motor. The direction of rotation is
indicated by an arrow on the type plate.
6.3 Operation with hand drill or cordless screwdriver
The pump needs to be fixed when it is used with a hand drill or any other
electric drill to avoid that it rotates with the drill.
Fixation can be done in two ways:
A) with drill adapter
The adapter either comes with the pump or can be ordered separately from the
manufacturer. The adapter is suitable for any standard drills and screwdrivers.
Article No. adapter: 11012300
► Fix adapter on pump (see below).
► Insert pump shaft into chuck and tighten.
► Insert depth stop into upper aperture and tighten fixing screw.

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B) with mounting feet and regraded support
Mounting feet and support can be ordered directly from the manufacturer.
Article No. mounting feet: 11012710
Article No. regraded support: 11012310
The support needs to be suitable for the drill. The
grading has to be high enough to provide for a
preciselyhorizontalalignmentofdrillandpump.
► Fix mounting feet on top of the support.
► Insert pump shaft into chuck. Pump and drill
must be precisely aligned. Tighten chuck
Caution
Material damage due to pressure on the shaft
• Donotxthedrilltothesupport,allowittolielooselytoallowit
some play.
6.4 Using other drive systems
If an external drive is being used, a claw coupling with adapter for the
connection of the pump with the motor (optional accessories, see parts list
from item 200) is necessary.
Caution
Material damage due to incorrect alignment of the pump
• If the claw coupling is being used, ensure precise alignment of
the pump and motor to prevent the shaft from breaking. The claw
coupling can only compensate a tolerance of 0.1 mm.
7. Commissioning and operation
Danger
Danger of death due to explosion
• Donotpumpanyliquidswithaashpointoflessthan55°C.
• Do not pump petrol/gasoline.
Danger
Danger of death and injury due to rotating parts
• Do not touch pump while it is in operation.

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Danger
Danger of injury due to items of clothing and hair being
caught in the running drive
• Do not wear loose items of clothing such as ties, scarves and
shawls.
• Tie back long hair and protect using a head covering or hood.
Warning
Danger of injury and poisoning due to dangerous pumped
media
• Safely collect escaping pumped media and dispose of in an
environmentally-friendly manner.
Caution
Material damage due to high temperatures of the pumped
medium
• Do not pump liquids with a temperature of more than 90 °C in
order to avoid damage to the impeller material.
ZUWAimpellerpumpsaredryself-priming.Forwater-likeuidsit
isnotnecessarytollthepumpspriortocommissioningexcept
whenthesuctiondepthismorethan3metres.Foruidswith
higherviscositiesitisalwaysrecommendtorstprimethepumpto
ensure satisfactory device life.
Caution
Material damage due to dry running
• Incaseofasuctiondepthofmorethan3metres,llpriorto
commissioning.
• Never allow the pump to run dry for more than one minute.
► Open pressure line.
► To start the pump, switch on drive..
► Service interruption: wait 3 - 4 seconds before restarting.
Caution
Material damage due to overpressure in the pump
• Do not block pressure side for more than a minute while the
drive is running.
All ZUWA impeller pumps are suitable for continuous operation.
After extended periods of pump down time prior to starting check
that the impeller wheel turns freely and that the pump starts. See
also chapter 11: “Troubleshooting”.

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UNISTAR 2000-C
This pump is equipped with a rotary switch to change
operating direction. Prior to changing the rotating
directionturno󰀨pumpandwaitfor3-4seconds.Then
turn switch into the new direction.
8. Storage
► Empty pump completely
► Clean pump in order to avoid adhesions and damage to the impeller
► Store pump under frost-protected conditions
9. Maintenance
Danger
Danger of death due to electric shock
• Prior to work on the pump, always disconnect the drive from the
power supply.
9.1 Routine inspection
► Regularly check the line connections for leak-tightness.
► The pump is supposed to be turned on in regular intervals for 2-3 seconds
to keep the impeller from getting glued to the pump body.
9.2 Cleaning
Caution
Material damage due to aggressive cleaning agents
• Donotusecleaningagentsthata󰀨ectthematerialsofpumpor
impeller wheel.
9.3 Disassembling the pump
The pumps of the NIROSTAR series are not fitted with lateral
discs.
In addition to the disassembling as described on the following
pages the lateral connection flanges can be dismantled from
pumps of the 2000-C and 2001-C series.
rotary switch
lateral connection ange

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9.3.1 Series 2000-A, 2000-B and 2000-C directly flanged
1. Disconnect hose connections. 2. Release screws, remove cover.
3. Remove wear plate (without hole) and
O-ring.
4. Remove housing with impeller.
5. Remove O-ring, rear wear plate (with
hole) and rear cover. Detach locking ring
and press out shaft seal.
6. Press impeller out of housing.
7. Housing with small rim on top, turn
impeller counter-clockwise into housing.
Push impeller as far up as possible.
In Out
small rim
Danger of death due to eletrical
shock. Prior to work on the pump
always disconnect the drive from
power supply.

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9.3.2 Series 2000-A, 2000-B and 2000-C with pump adapter
1. Disconnect hose connections. 2. Release bolts and nuts, remove pump
head from pump carrier.
3. Release bolts, remove cover, O-rings
and wear plate (with hole).
4. Remove housing with impeller, Orings
and wear plate (with hole).
5. Detach locking ring and press out
shaft.
6. Release safety rings and press out
bearing respectively shaft seal ring.
7. Push impeller out of housing.
8. Housing with small rim on top, turn
impeller counter-clockwise into housing.
Push impeller as far up as possible.
In Out
small rim
Danger of death due to eletrical
shock. Prior to work on the pump
always disconnect the drive from
power supply.

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9.3.3 Series NIROSTAR 2000-C plus
Service instructions NIROSTAR 2000-C plus
Reassemble the pump following the steps in reverse order.
Step 1
Step 2
Step 3
Release safety screw, lower bracket, remove front cover and front wear plate.
Remove the housing with the impeller, then press out the impeller or use the special tool
for changing the impeller.
Remove the rear wear plate and the screws of the cylinder head, remove the cylinder head itself
and withdraw the mechanical seal
Flexible impeller pump NIROSTAR 2000-C plus
replacement of flexible impeller
replacement of flexible impeller
Erstellt von Huber J.
Geprüft von Wimmer H.
Version 1.0
05.02.2019Page 1
Danger of death due to eletrical
shock. Prior to work on the pump
always disconnect the drive from
power supply.

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9.3.4 Series synthetic pump ACOSTAR 2000-A
1. Disconnect line connections. 2. Loose the star knobs and remove lid.
3. Remove wear plate (without hole)
and O-ring. 4. Remove pump/impeller from shaft.
Squeezeimpelleroutofthepumpbody.
5. Remove O-ring, lateral disc (with
hole) and PTFE ring.
6.Loosesafetyrings,withdrawo󰀨rod
and shaft seal.
7. Remove ceramic sleeve and Orings.
Reassemble the pump following the
steps in reverse order.
Danger of death due to eletrical
shock. Prior to work on the pump
always disconnect the drive from
power supply.