Pfeiffer Vacuum TPH 2301 P User manual

Turbomolecular Pumps
With Electronic Drive Unit TC 750
PT 0104 BE/H (0703)
TPH 2301 P / P C
TPU 2301 P / P C
Betriebsanleitung • Operating Instructions
Translation of the Original Operating Instructions

2
Index
Page Page
1. Safety Instructions .......................... 3
1.1. For Your Orientation........................................... 3
1.2. Pictogram Definitions......................................... 3
2 Understanding The Pumps............. 4
2.1. Main Features.................................................... 4
Proper Use......................................................... 4
Improper Use..................................................... 5
2.2. Differences Between The Pump Types............. 5
2.3. Scope Of Delivery.............................................. 5
3. Installation ....................................... 6
3.1. Preparations For Installation............................... 6
3.2. Connecting The High Vacuum Side ................... 6
3.3. Connecting The Fore-Vacuum Side ................... 9
3.4. Connecting The Cooling Unit ........................... 10
3.5. Connecting The Casing Heating Unit .............. 10
3.6. Connecting The Electronic Drive Unit TC 750.. 11
3.7. Installing The Power Supply............................. 11
3.8. Installing The Cover Plate For The TC 750....... 12
3.9. Connecting The Venting Valve......................... 13
3.10.Connecting The Sealing Gas Valve.................. 13
3.11.Connecting The Remote Control Unit ............. 14
3.12.Connecting The Serial Interface RS 485.......... 15
Connection....................................................... 15
Connecting The RS 485 ................................... 15
3.13.Connections Diagram ...................................... 16
4. Operations...................................... 17
4.1. Filling In The Lubricant..................................... 17
4.2. Before Switching ON....................................... 17
4.3. Switching ON................................................... 18
4.4. Gas Type Dependent Operations .................... 18
4.5. Circulatory Lubrication ..................................... 19
4.6. Switching OFF And Venting............................. 19
4.7. Shutting Down For Longer Periods.................. 19
4.8. Operations With The DCU 001/DCU 600
or HPU 001 ...................................................... 19
4.9. Operations With The Remote Control Unit...... 20
Venting Release (Optional)............................... 20
Motor, Turbopump .......................................... 20
Heating/Reset ................................................. 20
Standby............................................................ 20
Pumping Station .............................................. 20
Rotation Speed Setting Operations
Via Input PWM ................................................ 20
Switching Outputs ........................................... 20
5. Monitoring Operations.................. 21
5.1. Operations Display Via LED ............................. 21
5.2. Turbopump Temperature Monitoring............... 21
6. What To Do In Case
Of Breakdowns?............................. 22
7. Service............................................ 23
8. Maintenance/Replacement .......... 24
8.1. Replacing The Lubricant .................................. 24
8.2. Cleaning The Lubricant Pump.......................... 25
8.3. Replacing The Lubricant Pump ........................ 25
8.4. Replacing The Electronic Drive Unit TC 750 .... 25
9. Technical Data ................................ 26
9.1. Dimensions Diagram........................................ 27
10. Spare Parts ..................................... 29
11. Accessories .................................... 30
11.1.Lubricant.......................................................... 30
Declaration of Contamination............ 31
Manufacturer´s Declaration .. (last page)
PPlleeaasseennoottee::Current operating instructions are available via
www.pfeiffer-vacuum.net
For information about certifications, if applicable, please see
the signet on the pump or:
☞www.tuvdotcom.com
☞TUVdotCOM-ID 0000021320

1.1. For Your Orientation
Instruction in the text
➡Working instruction: here, you have to do something.
Symbols used
The following symbols are used throughout in illustrations:
High vacuum flange
Fore-vacuum flange
Venting connection
Cooling water connection
Electric connection
Sealing gas connection
Abbreviations used
DCU = Display and operating unit
HPU = Display and operating unit
TC = Electronic drive unit, turbopump
TPS = Power supply
Position numbers
The same pump and accessory parts have the same position
numbers in all illustrations.
1.2. Pictogram Definitions
G
V
H
3
Warning, danger of burns from touching hot
parts.
Warning, danger of personal injury.
Caution, danger of damage to the pump or to
the system.
Warning, danger of injury from rotating parts.
Please note, attention to particulary important
information on the product, handling the
product or to a particular part of the
documentation.
☞
PLEASE NOTE
WARNING
CAUTION
WARNING
WARNING
☞Read and follow all instructions in this manual.
☞Inform yourself regarding:
– Hazards which can be caused by the pump;
– Hazards which can be caused by your system.
– Hazards which can be caused by the media being
pumped.
☞Avoid exposing any part of the body to vacuum.
☞Observe the safety and accident prevention regulations.
☞Regularly check that all accident prevention measures are
being complied with.
☞Do not operate the turbopump with open high vacuum
flange.
☞Do not carry out any unauthorised conversions or alterati-
ons to the turbopump with TC 750.
☞When returning the turbopump observe the shipping
instructions.
☞The turbopump must be anchored in accordance with the
installation instructions (see Section 3.).
☞Do not disconnect the plug between the TC 750 and acces-
sory components during operations.
☞Disconnect the voltage supply to the TC 750 before
opening the turbopump.
☞When working on the turbopump, the high vacuum flange
should only be opened once the rotor is at rest.
☞When using sealing gas, the pressure in the hose connec-
tion should be limited to 2 bar via the overpressure valve.
☞If a heater is in use temperatures of up to 120 °C can arise
in the area of the high vacuum flange and housing. Take
care to avoid burns!
☞During operations temperatures of up to 65 °C can arise in
the lower part of the turbopump. Take care to avoid burns!
☞Keep leads and cables well away from hot surfaces
(> 70 °C).
☞Operate the turbopump with TC 750 only in conjunction
with the relevant power supply (accessory).
☞The unit has been accredited protection class IP 30. When
the unit is operated in environments which require other
protection classes, the necessary measures must be
taken. When the turbopump is water cooled the enclosed
cover plate for the TC 750 must be installed by an electrical
specialist, in order to attain protection class IP 54.
☞The mains connection must be subject to a safe
connection to the PE (protection class 1).
☞If the turbopump and the TC 750 are operated separately
(only permissible with the agreement of the manufacturer)
the turbopump must be connected to the PE.
☞The turbopump and the TC 750 must only be disconnected
from each other when the turbopump is completely at rest
and the TC 750 has been disconnected from the power
supply.
☞The cause of any operating voltage leakage to earth (red
LED flashes) must be eliminated to avoid the danger of an
electric shock.
☞The housing screws do not loosen, pull tight, remove or
replace, since otherwise the guarantee for the security of
the turbopump expires.
Modifications reserved.
1. Safety Instructions

4
2.1. Main Features
Turbopumps TPH/TPU 2301 P/P C with the TC 750 form a
complete unit. Voltage is supplied by power supply (see
Section 11. Accessories).
On delivery, the pumps have been set up for
operations in remote mode. Remote plug 8d
should therefore be disconnected from the
TC 750 if operations with the DCU 001/DCU 600
or HPU 001 are required.
CAUTION
Cooling
Standard: Water cooling
Integrated protective measures against excess temperatures:
The Electronic Drive Unit TC 750 reduces
the rotor rotation speed.
Bearings
High vacuum side: Wear free permanent magnetic bearing.
Fore-vacuum side: Oil circulatory lubricated ball bearing
with ceramic balls.
2. Understanding The Pumps
The turbopumps must nnoottbe transported when
filled with lubricant.
When being fitted into or dismantled from a
system, turbopumps may only be positioned as
shown in Section 3.2. Other positions can cause
the pumps to be contaminated with lubricant.
Ambient conditions
The turbomolecular pump needs to be installed in compliance
with the following ambient conditions:
Installation location: protected against the weather
(rooms within buildings)
Temperature: +5 °C to +40 °C
Relative humidity
of the air: max. 80 % at T ≤31 °C
up to max. 50% at T ≤40 °C
Air pressure: 77 kPa - 106 kPa
Installation altitude: 2000 m max.
Pollution degree: 2
Overvoltage category: II
Connection voltage: 140 VDC ±5%
Proper Use
– The Turbomolecular Pumps may only be used for the
purpose of generating vacuum.
– The Turbomolecular Pumps TPH/TPU 2301 P C (please see
the type plate) are designed to pump corrosive gases and
vapours. Where corrosive gas processes are involved, gas
bonding and particles which can damage the surfaces of
the pump can be produced. The motor and bearing
compartments have to be protected with sealing gas.
– The turbopumps may only be used to pump those media
against which they are chemically resistant. For other
media the operator is required to qualify the pumps for the
processes involved.
– If the process produces dust, the maintenance intervals
must be specified accordingly and sealing gas must be
used.
– If the pump is to be operated with more than 50% of the
permissible gas load then sealing gas should be used to
ensure rotor cooling.
– The turbopump must be connected to a backing pump in
accordance with Section 3.3..
– Only Pfeiffer Vacuum power supplies may be used to
operate the TC 750. The use of other power supplies requi-
res the prior agreement of the manufacturer and equalisa-
tion with the valid specification.
– Without the cover plate for the TC 750 the pumps may only
be operated providing the ambient conditions in complian-
ce with Protection Type IP 30 are observed.
CAUTION
H
V
F
4
2
8
3
72
71
73
1
Turbomolecular Pump TPH 2301 P/P C
1 High vacuum flange
2 Fore-vacuum flange
3 Cooling water connections
4 Venting screw
8 Electronic Drive Unit TC 750
71 Lubricant filler screws
72 Lubricant drain screws
73 Sight glass

5
Improper Use
The following is regarded, inter alia, as improper:
– The pumping of explosive gases.
– Operating the pumps in areas where there is a danger of
explosion.
– Operating the pumps in areas there is a danger of
radionactivity.
– The pumping of gases and vapours which attack the
materials of the pumps.
– The pumping of corrosive gases without sealing gas.
– The pumping of condensating vapours.
– Operations involving impermissibly high levels of gas
loads.
– Operations with impermissibly high fore-vacuum pressure.
– Operations with improper gas modes.
– Operations involving too high levels of heat radiation
power (see Section 9. ”Technical Data”).
– Venting with rates higher than in Section 4.6. stated.
– Operating the pump without the cover plate for the TC 750
in environments which require a protection class superior
to IP 30.
– Installation of the pumps in systems where the turbomole-
cular pumps are subjected to impact-like stress and vibra-
tions or the effect of periodically occurring forces.
– The use of other power supplies or accessories which are
not named in this manual or which have not been agreed
by the manufacturer.
– The connection to power supplies with earthing of a direct
voltage pole.
The turbomolecular pumps and flange connections must not
be used to tread on when climbing onto the system.
Improper use will cause all claims for liability and guarantees
to be forfeited.
FFeeaattuurreeTTPPHH22330011PPTTPPUU22330011PP
TTPPHH22330011PPCCTTPPUU22330011PPCC
High vacuum flange ISO-K / ISO-F CF-F
High vacuum seal Elastomer seal Metal
Attainable final < 1 · 10-7 mbar < 5 · 10-10 mbar
pressure
2.2. Differences Between The Pump
Types
TPH/TPU 2301 P Standard version
TPH/TPU 2301 P C Corrosive gas processes version
Abbreviations on the type plate of the pump
TPH/TPU 2301
Suffix ”PP“: Purge gas connection for the prevention of
the ingress of aggressive gases into the
motor and bearing area
Suffix”CC“: Surface protection for passive protection
of the pump
2.3. Scope Of Delivery
The turbopump scope of delivery includes:
– Lubricant F3 (40 ml) with filling syringe,
– cover plate for the TC 750 to fulfilled the conditions for
protection class IP 54 (please see Section 3.8.),
– protective covering for the high vacuum flange and the
fore-vacuum flange.
The fastening parts at the high vacuum flange
are not sufficient for the attachment of the
turbopump at a recipient (please refer to
Section. 3. Installation).
CAUTION

6
3. Installation
3.1. Preparations For Installation
Do not carry out any unauthorised conversions
or alterations to the turbopump.
In case the rotor blocks suddenly, torque levels
up to 1166..000000NNmmcan occur which need to be
absorbed by the system and the high vacuum
flange.
The turbopumps must not be transported when
filled with lubricant.
– Pumps must be filled with lubricant befor being operated
(see Section 4.1.).
– If the turbopump is to be operated with the DCU 001 or
HPU 001, the remote plug 8d (please see Section 2.1.) on
the TC 750 should be disconnected and then proceed in
accordance with the corresponding operating instructions.
– The maximum permissible rotor temperature of the pump is
120 °C. If the vacuum chamber or parts in the vacuum
chamber are heated, the values stated in the technical
data relating to the level of heat which may be radiated
into the pump must not be exceeded. If necessary, suitable
shielding must be fitted in the vacuum chamber before the
turbopump (constructional suggestions available on
request).
– The temperature of the high vacuum flange must not
exceed 120 °C.
– Only remove the blank flange from the high and fore-vacu-
um side immediately before connection.
– Where magnetic fields of > 7 mT are involved suitable
shielding must be provided (available on request).
– If the pump is baked out, the heating sleeve and the body
of the pump must be insulated to prevent burns from
accidental contact.
– Floor mounting of the turbomolecular pump is admissible
after consulting the manufacturer.
The person responsible for commissioning
must ensure that the installation is carried out
in accordance with the legal regulations and
the pertinent industrial standards.
☞
PLEASE NOTE
CAUTION
WARNING
WARNING
3.2. Connecting The High Vacuum Side
The utmost cleanliness must be observed
when fitting all high vacuum parts. Unclean
components prolong the pumping time.
All installations units for the flange must be
with installation grease-free, dust free and
drying.
UUsseeaaPPffeeiiffffeerrVVaaccuuuummsspplliinntteerrsshhiieellddoorrpprrootteeccttiivveessccrreeeenn
The use of a Pfeiffer Vacuum splinter shield or protective
screen in the high vacuum flange protects the turbopump
against foreign bodies coming from the vacuum chamber but
does reduce the volume flow rate as followed:
☞
PLEASE NOTE
Connecting via a Pfeiffer Vacuum vibration compensator
The high vacuum side can be flanged onto the vacuum cham-
ber either directly or via a Pfeiffer Vacuum vibration compen-
sator (see Section 11. Accessories).
When using a Pfeiffer vacuum vibration compensator,
suitable securing needs to be introduced capable of
absorbing the energy of the rotor should it suddenly block,
since the vibration compensator itself alone cannot absorb
the occurring forces. Please consult the manufacturer.
The maximum permissible temperature at the
vibration compensator is 100 °C.
The CF-F flange (TPU 2301 P/P C) can only be
fitted if the screws are insert from the direction
of the counter-flange or with stud bolts.
☞
HINWEIS
CAUTION
Reduced volume flow rate [[%%]]
N2He H2
Splinter shield DN 250 23 10 7
Protective screen DN 250 6 3 2

7
➡See that the sealing surface is not damaged.
➡Flange the turbopump according to the drawing and the
component parts in your set of mounting material. Use 1122
screws.
➡For a flange material having a strength of > 270 N/mm2and
with a blind hole the hexagon screw 1,5 d must be
screwed in. The hexagon screws must be tightened
crosswise in three steps.
Tightening torque: 10 Nm, 20 Nm, 38 ±3 Nm
Variant 2 - Stud screw with blind hole
B
A
D oder/or E
1.5d
C
Hexagon srew with blind hole
A ISO-F flange
B Hexagon screw
C Centering ring, coated
D Splinter shield
E Protective screen
B
A
C
D oder/or E
2.5d
Stud screw with blind hole
A ISO-F flange
B Stud screw with nut1)
C Centering ring, coated
D Splinter shield
E Protective screen
A
D oder/or E B
C
Bracket crew
A ISO-K flange
B Bracket screw
C Centering ring, coated
D Splinter shield
E Protective screen
1) Nut with flange.
➡See that the sealing surface is not damaged.
➡Flange the turbopump according to the drawing and the
component parts in your set of mounting material. Use 1122
screws and 1122nuts.
➡For a flange material having a strength of 170-270 N/mm2
and a screw-in flange, the stud screw 2,5 d must be
screwed in. The nuts must be tightened crosswise in three
steps.
Tightening torque: 10 Nm, 20 Nm, 38 ±3 Nm
Installing the high vacuum flange
– In case the rotor blocks suddenly, torque levels up to
1166..000000NNmmcan occur which need to be absorbed by the
system and the high vacuum flange.
– For installing the turbomolecular pumps to the high
vacuum flange, the components listed in the following
mmuussttbe used exclusively. Otherwise the turbomolecular
pump may twist or tear off.
The components for installing the tuebopumps are special
designs from Pfeiffer Vacuum
– The minimum strength of 170 N/mm2of the flange material
needs to be observed.
Installation is done as follows:
To reliably prevent the pump from twisting if
the rotor suddenly blocks, it is absolutely prohi-
bited to secure a pump with an ISO-K flange on
a vacuum chamber with an ISO-F flange or vice
versa. Both flanges mmuussttbbeeof the same type.
Installation with different flange types is
carried out at the user's own risk. Pfeiffer
Vacuum shall assume no liability whatsoever
for any damage or injuries resulting from this
kind of attachment.
SO-K to an ISO-K flange
The components for installation are enclosed in the
appropriate set of mounting material (see sec. 11.
Accessories).
WARNING
➡See that the sealing surface is not damaged.
➡Flange the turbopump according to the drawing and the
component parts in your set of mounting material. Use 2222
bracket screws.
➡Tighten the clamps crosswise in three steps.
Tightening torque: 5 Nm, 15 Nm, 25 ±2 Nm
ISO-F to an ISO-F flange
For installing there exist three variants. The components for
installation are enclosed in the appropriate set of mounting
material (see sec. 11. Accessories).
VVaarriiaanntt11--HHeexxaaggoonnssccrreewwwwiitthhbblliinnddhhoollee

8
CF-F-Flansch
Applications for installing an CF-F to an CF-F flange are “Stud
screw with blind hole” and “Hexagon screw and clearance
hole”. The following items are needed: the particular set of
mounting material and a copper seal. Using asplinter shield or
protective screen is optional.
Don’t touch the copper seal with bare hands,
this may affect the sealings efficiency. See
that the sealing lip is not damaged.
Stud screw with blind hole
➡If used: Insert the splinter shield and protective screen in
the high vacuum flange with the clamping lugs downward
(towards the pump).
➡Bring the seal centric into the correct position.
➡Connect the flanges via 3322pieces of stud screws (M8) with
washers and nuts. The stud screws need to be tightened
revolving with a tightening torque of 22 ±2 Nm. Control the
torque afterwards, because of the sealing material’s
flowing a retightening of the screws may be required.
☞
PLEASE NOTE
CCoonnnneeccttiioonnnnoommiinnaall--DDeessiiggnnaattiioonnOOrrddeerr--nnuummbbeerr
ddiiaammeetteerr
DN 250 CF-F Hexagon screw M8 with PF 505 004 -T
washer and nut
(25 pieces1))
Stud screw M8 with PF 507 004 -T
washer and nut
(34 pieces1))
Copper seal (5 pieces1)) PF 501 425 -T
or
copper seal silvered PF 501 525-T
(5 pieces1))
Splinter shield2) PM 016 324
Protective screen2) PM 016 345
B
A
C
52
Hexagon screw and clearance hole
➡If used: Insert the splinter shield and protective screen in
the high vacuum flange with the clamping lugs downward
(towards the pump).
➡Bring the seal centric into the correct position.
➡Connect the flanges via 3322pieces of hexagon screws (M8)
with washers and nuts. The hexagon screws need to be
tightened revolving with a tightening torque of 22 ±2 Nm.
Control the torque afterwards, because of the sealing
material’s flowing a retightening of the screws may be
required.
B
A
C
55
The components for installing to an CF-F flange are to be
ordered under the following numbers:
1) supplied pieces
Stud screw with blind hole
A CF-F flange
B Stud screw with washer and nut
C Copper seal
Hexagon screw and clearance hole
A CF-F-flange
B Hexagon screw with washer and nut
C Copper seal
1) Nut with flange.
➡See that the sealing surface is not damaged.
➡Flange the turbopump according to the drawing and the
component parts in your set of mounting material. Use 1122
screws and 2244nuts.
➡For a flange material having a strength of > 170 N/mm2and
a stud screw with clearance hole, the nuts must be
tightened crosswise in three steps.
Tightening torque: 10 Nm, 20 Nm, 38 ±3 Nm
B
A
C
D oder/or E
Stud screw and clearance hole
A ISO-F flange
B Stud screw with two nuts1)
C Centering ring, coated
D Splinter shield
E Protective screen
Variant 3 - Stud screw and clearance hole

9
Directly Flanging The Pump
The turbopump can be flanged onto the vacuum chamber up
to an angle of 90° maximum.
The fore-vacuum flange must always point
downwards.
CAUTION
TC 750
TC 750
TC 750
TC 750
90˚
11
H
H
V
V
Permissible installation positions for the turbopump
11 Vacuum chamber
The maximum loading capacity of the high vacu-
um flange is 2000 N (equivalent to 200 kg).
Asymmetric loading on the high vacuum flange
must be avoided.
Horizontal installation position of the turbopump
The fore-vacuum flange of the turbopump must be aligned
vertical downwards, otherwise the turbopump could become
dirty and the lubricating pump not properly function. The
deviation of the fore-vacuum flange from the perpendicular
must not exceed the following values (view onto the fore-
vacuum side):
Clockwise: 8° max.
Counter-clockwise: 15° max.
CAUTION
No forces from the piping system must be
allowed to act on the pump where turbopumps
are anchored.
Suspend or support all pipes to the turbopump.
3.3. Connecting The Fore-Vacuum Side
Backing pump: Fore-vacuum pressure please see
Section 9. Technical Data
Recommendation: Dry backing pumps or rotary vane
vacuum pumps from the Pfeiffer Vacuum
range.
Connecting the backing pump
All connections of the fore-vacuum line: With the usual small
flange components or screwed hoses.
Be sure to conduct away the exhaust gases
from the backing pump. Do not reduce the free
cross section of the fore-vacuum flange with
following components.
The exhausted process gases and vapours can
represent a health hazard and can also be envi-
ronmentally damaging.
Comply with all the gas manufacturer's safety
instructions.
Check the seal of the fore-vacuum line before
commissioning.
➡With rigid pipe connections: Fit a bellows in the
connecting line to reduce vibration.
➡The fore-vacuum lines should be designed so that they will
not breake in the event of rotation of the pump at the high
vacuum flange.
➡The electrical connection of the backing pump is made via
a relay box (see Section 11. Accessories) whose control
line is connected to ”FV PUMP” on the TC 750.
Please refer to Operating Instructions PT 0030 BN for details
on the relay box, backing pump and its installation.
WARNING
CAUTION
CAUTION
8˚ max. 15˚ max
H
VV VV VV
Horizontal installation position of the turbopump
11 Vacuum chamber
11

10
3.4. Connecting The Cooling Unit
The Turbopumps TPH/TPU 2301 P / P C have been designed to
be water cooled as standard.
(cooling water connection please refer to Section
9.1. Dimensions Diagram).
When the turbopump is water cooled the
enclosed water protection cover plate for the
TC 750 must be installed by an electrical specia-
list, in order to attain protection class IP 54
(please see Section 3.8.).
Water Cooling
The cooling water can be drawn either
– from the cooling water mains, or
– from Recycled Water Cooling Unit TZK (please see
Section 11. Accessories) in closed circuit.
Cooling from the cooling water mains
To prevent deposits collecting in the pump the cooling water
must be filtered.
Minimum cooling water requirements:
Mechanically clean, optically clear, no turbidity, no sediment,
chemically neutral, temperature >dew point.
CAUTION
Oxygen content: max. 4 mg/kg
Chloride content: max. 100 mg/kg
Carbonate hardness: max. 10 ° dH
Consumption of potassium
permanganate: max. 10 mg/kg
Carbon dioxide: Undetectable
Ammonia: Undetectable
pH-value: 7 – 9
Max. fore-line over pressure: max. 6 bar
Connection to the cooling water mains
➡Fit the dirt trap (see Section 11. Accessories) in the supply
line.
➡Connect the supply line with hose clips onto one of the two
cooling water connections.
➡Connect the return line to the other cooling water connec-
tion of the turbopump.
➡Tighten cooling water connection to a torque of 10 Nm.
➡Tighten all hose clips and check for firm seating of the
hoses.
Cooling with the Recycled Water Cooling Unit TZK
(Accessory)
Connection
Dirt traps are not permissible in the lines.
All other steps as for connecting to the cooling water mains.
3.5. Connecting The Casing Heating Unit
In order to accelerate attainment of final pressures,
turbopumps and vacuum chambers can be heated.
Heating duration is dependent on the level of contamination
and the required final pressure but should be at least four
hours.
Baking out is only practical on pumps with
stainless steel casings (TPU pumps).
On account of their aluminium casings, the
temperatures attainable on TPH pumps are not
high enough.
High temperatures are generated when
turbopumps are heated.
There is a danger of injury from coming into
contact with hot parts even after the casing
heating has been switched off.
Heating sleeve and the pump casing should be
thermally insulated during the installation.
During the heating phase be careful not to come
into contact with the heating sleeve or the pump
casing.
For details regarding the casing heating and its installation
please refer to Operating Instructions PM 0542 BN and the
connection diagram see Section 3.13..
WARNING
☞
PLEASE NOTE
3
33
31
32
Cooling from the cooling water mains
3 Cooling water connection
31 Supply line
32 Return line
33 Dirt trap
3
31
32
35
TZK
Cooling with Recycled Water Cooling Unit TZK
3 Cooling water connection
31 Supply line
32 Return line
35 Recycled Water Cooling Unit TZK