Siemens MOTOX BA 2510 User manual

© Siemens AG 2016. All rights reserved
A5E38121849A/RS-AB, 10/2016 1
MOTOX
Optional add-on units
BA 2510
Compact Operating Instructions
Translation of the original instructions
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The
notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage
have no safety alert symbol. These notices shown below are graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of
injury to persons with a safety alert symbol may also include a warning relating to property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific task in accordance with
the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their
training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products
and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage,
installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any
problems. The permissible ambient conditions must be complied with. The information in the relevant documentation must be observed.
1
General information and safety instructions
1.1
General information
Note
Siemens
AG does not accept any liability for damage and failures that result from the non-observance of these operating
instructions.

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These operating instructions are part of the gearbox delivery. Store the operating instructions near the gearbox.
These operating instructions supplement the MOTOX gearbox operating instructions BA 2010.
They cover the optional flanges and seals for the standard version of the MOTOX gearbox:
●Agitator flange for helical gearbox DR/ZR sizes 68 to 168
●Mixer flange for parallel shaft gearbox FD.M/FZ.M sizes 88B to 168B and bevel helical gearbox K.M sizes 88 to 168
●Extruder flange for parallel shaft gearbox FDAE/FZAE sizes 68B to 168B and bevel helical gearbox KAE sizes 68 to 168
●Labyrinth seal
●Dry-well version
●Gearbox cooling
Table 1-1 Order number code
MOTOX gearbox
Order number location
1
2
3
4
5
14
Helical gearbox Z with agitator flange
2
K
J
1
1
R
Helical gearbox D with agitator flange
2
K
J
1
2
R
Parallel shaft gearbox FZ with mixer flange
2
K
J
1
3
M
Parallel shaft gearbox FD with mixer flange
2
K
J
1
4
M
Bevel helical gearbox K with mixer flange
2
K
J
1
5
M
Parallel shaft gearbox FZ with extruder flange
2
K
J
1
3
E
Parallel shaft gearbox FD with extruder flange
2
K
J
1
4
E
Bevel helical gearbox K with extruder flange
2
K
J
1
5
E
Note
In addition to these operating instructions, special contractual agreements and technical documentation apply to special
gearbox designs and the associated supplementary
equipment.
Please read these operating instructions and the operating instructions for the MOTOX
gearbox BA 2010 before working
with the gearbox.
Please refer to the other operating instructions supplied with the product.
The described gearboxes correspond to the state-of-the-art at the time these operating instructions were printed.
Siemens AG reserves the right to change individual components and accessory parts in the interest of further development.
The changes serve to improve the performance and safety. The significant features are retained. The operating instructions
are updated regularly with new contents.
The latest versions of the operating instructions, the declaration of incorporation and the declarations of conformity are
available in electronic form in the Industry Online Support (https://support.industry.siemens.com/cs/ww/de/ps/13424/man).
You can find technical configuration data, spare parts lists and certificates of compliance on the Intranet at Once Delivered
(https://c0p.siemens.com:8443/sie/1nce_delivered).
You can find the contact data of your Technical Support in the Database of contacts at Siemens AG
(www.siemens.com/yourcontact).
If you have any technical questions, please contact Technical Support
(https://support.industry.siemens.com/cs/ww/en/sc/2090).
Europe and Africa
Telephone: [phone]
[e-mail]

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America
Telephone: [phone]
[e-mail]
Asia / Australia / Pacific
Telephone: [phone]
[e-mail]
Valid operating instructions for MOTOX
●BA 2010 - operating instructions for MOTOX gearboxes
●BA 2011 - operating instructions for MOTOX worm gearbox SC
●BA 2012 - operating instructions for MOTOX worm gearbox S
●BA 2019 - operating instructions for MOTOX input units
●BA 2310 - operating instructions for three-phase and single-phase AC motors and
motors equipped with brake with accessories
●BA 2320 - operating instructions for LA/LG and LAI/LGI motors
●BA 2510 - operating instructions for MOTOX optional add-on units
●BA 2515 - operating instructions for MOTOX gearboxes for overhead conveyors
1.2
Copyright
The copyright to these operating instructions is held by Siemens AG.
These operating instructions must not be wholly or partly reproduced for competitive purposes, used in any unauthorized
way or made available to third parties without agreement of Siemens AG.
1.3
Intended use
ATEX version gearboxes
The ATEX gearbox satisfies the requirements of the Explosion Protection Directive 2014/34/EU.
In the case of ATEX version gearboxes, please observe instructions marked with this symbol.
The MOTOX gearboxes described in these operating instructions have been designed for stationary use in general
engineering applications.
Unless otherwise agreed, the gearboxes have been designed for use in machinery and plants in industrial environments.
The gearboxes have been built using state-of-the-art technology and are shipped in an operationally reliable condition.
Changes made by users could affect this operational reliability and are forbidden.
Note
The performance data assumes an ambient temperature of
-20° C to +40° C and an installation altitude of up to 5000 m
above sea level.
In the case of other ambient temperatures and installation altitudes, please contact Technical Support.
The gearboxes are designed only for the area of application described in Chapter Technical data in the operating
instructions BA 2010 or BA 2515 for MOTOX gearboxes
Do not operate the gearboxes outside the specified performance limits.
Any different operating conditions require new contractual agreements.
Do not climb on the gearbox. Do not place any objects on the gearbox.
1.4
Obligations of the user
The operator must ensure that all persons assigned to work on the geared motor have read and understood these operating
instructions and that they follow them in all points in order to:
●Eliminate the risk to life and limb of users and other persons.
●Ensure the operational safety of the geared motor.

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●Avoid disruptions and environmental damage through incorrect use.
Note the following safety information:
Shut down the geared motors and disconnect the power before you carry out any work on them.
Make sure that the drive unit cannot be turned on accidentally, e.g. lock the key-operated switch. Place a warning notice at
the drive connection point which clearly indicates that work is in progress on the geared motor.
Carry out all work with great care and with due regard to "safety".
For all work, observe the relevant regulations for work safety and environment protection.
Read the instructions on the rating plates attached to the geared motor. The rating plates must be kept free from paint and
dirt at all times. Replace any missing rating plates.
In the event of changes during operation, switch off the drive unit immediately.
Take appropriate protective measures to prevent accidental contact with rotating drive parts, such as couplings, gear wheels
or belt drives.
Take appropriate protective measures to prevent accidental contact with parts and equipment that heat up to over +70 °C
during operation.
When removing protective equipment, keep fasteners in a safe place. Re-attach removed protective equipment before
commissioning.
Collect and dispose of used oil in accordance with regulations. Remove oil spillages immediately with an oil-binding agent in
compliance with environmental requirements.
Do not carry out any welding work on the geared motor. Do not use the geared motor as a grounding point for welding
operations.
Carry out equipotential bonding in accordance with applicable regulations and directives by electrotechnology specialists.
Do not use high-pressure cleaning equipment or sharp-edged tools to clean the geared motor.
Observe the permissible tightening torque of the fastening bolts.
Replace damaged bolts with new bolts of the same type and strength class.
Siemens AG accepts the warranty only for original spare parts.
The manufacturer who installs the geared motors in a plant must include the regulations contained in the operating
instructions in its own operating instructions.
1.5
Particular types of hazards
WARNING
Extreme surface temperatures
Hot surfaces over +55 °C pose a burn risk.
Cold surfaces below 0 °C pose a risk of damage due to freezing.
Do not touch the gearbox without protection.
WARNING
Hot, escaping oil
Before starting any work wait until the oil has cooled down to below +30 °C.
WARNING
Poisonous vapors when working with solvents
Avoid breathing in vapors when working with solvents.
Ensure adequate ventilation.

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WARNING
Risk of explosion when working with solvents
Ensure adequate ventilation.
Do not smoke!
WARNING
Risk of eye injury
Rotating parts can throw off small foreign particles such as sand or dust.
Wear protective eyewear!
In addition to the prescribed personal protection gear, also wear suitable protective gloves and safety glasses.
2
Agitator flange
For helical gearbox DR/ZR sizes 68 to 168
2.1
Technical description
①
Bearing in oil bath
②
Greased bearing
Figure 2-1 Bearing in agitator flange
The multistage helical gearbox can be supplied with an upstream agitator flange.
With an upstream locating bearing, the bearing system is suitable for high external forces. The absorbed radial and axial
loads are transmitted to the machine via the agitator flange.
The bearings in the agitator flange are lubricated independently of their design. The output-side bearing is greased. Initial
greasing has already been carried out. The opposing bearing runs in a gearbox-oil bath.
The agitator flange can be optionally supplied with an automatic regreasing device, see Regreasing intervals (Page 6). In
this case, the output-side bearing is not sealed with NILOS rings or caps.

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2.2
Lubrication
In normal operating conditions and with low loads, the lubrication of the bearings is sufficient for approximately 25,000 to
30,000 operating hours.
For higher loads due to speed and / or temperature, schedule regreasing at shorter intervals.
2.2.1
Regreasing intervals
The regreasing interval is valid for a temperature of +70 °C, measured on the surface of the housing in the vicinity of the
bearing.
Note
For temperatures above +70
°C, the regreasing interval must be reduced by half for each temperature increase of 15 K.
Note
For moderate shock loading and vibration, the regreasing interval must be reduced by 20
%.
For
heavy loading, the regreasing interval must be reduced by half.
Regrease the bearing after the following number of operating hours.
Table 2-1 Regreasing intervals in operating hours for agitator flange
Output speed n2
Operating hours for size
68
88
108
128
148
168
[rpm]
[h]
≤ 30
29 000
29 000
29 000
29 000
29 000
18 000
31 … 50
29 000
29 000
29 000
29 000
14 000
14 000
51 … 100
29 000
29 000
16 000
16 000
10 000
10 000
101 … 150
29 000
29 000
14 000
12 000
9 000
7 000
151 … 250
18 000
16 000
10 000
9 000
5 000
5 000
251 … 400
14 000
12 000
7 000
7 000
4 000
4 000
2.2.2
Roller bearing grease
NOTICE
When regreasing do not mix greases with different soap bases
For regreasing, use lithium-saponified roller bearing grease NLGI 3/2.
Using a grease gun, inject the grease into the bearing point via the lubricating nipples provided.
The grease quantities listed in the table are guide values.
Table 2-2 Grease quantities for regreasing the agitator flange
Regreasing interval
Grease quantity for regreasing for size
68
88
108
128
148
168
[g]
After 6 months
20
20
50
60
70
70
After several years without operation 50 60 120 160 170 200

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2.3
Maintenance of the output-side bearing in the agitator flange
Note
Change the grease filling of the roller
bearing when you change the gearbox oil.
For refilling, use lithium
-saponified roller bearing grease NLGI 3/2.
Procedure
1. Dismantle the output-side bearing unit.
2. Clean the bearing.
3. Fill the bearing with the new grease up to approximately 30 % of the free bearing chamber.
4. Reassemble the bearing unit.
Maintenance interval after regreasing
After regreasing, the maintenance interval can be increased to the following number of operating hours.
Table 2-3 Maintenance interval in operating hours after regreasing the agitator flange
Output speed n2
Operating hours for size
68
88
108
128
148
168
[rpm]
[h]
≤ 30
80 000
80 000
80 000
80 000
80 000
50 000
31 … 50
80 000
80 000
80 000
80 000
40 000
40 000
51 … 100
80 000
80 000
45 000
45 000
28 000
28 000
101 … 150 80 000 80 000 40 000 32 000 25 000 20 000
151 … 250
50 000
45 000
28 000
25 000
15 000
15 000
251 … 400
40 000
32 000
20 000
20 000
10 000
10 000
3
Mixer flange
For bevel helical gearbox K.M and parallel shaft gearbox FD.M/FZ.M sizes 88 to 168
3.1
Technical description
①
Greased bearing
Figure 3-1 Bearing in mixer flange

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The bevel helical gearbox and the parallel shaft gearbox can be supplied with an upstream mixer flange.
With an upstream locating bearing, the bearing system is suitable for high external forces. The absorbed radial and axial
loads are transmitted to the machine via the mixer flange.
The bearings in the mixer flange are lubricated independently of their design. Initial greasing has already been carried out.
The mixer flange can be optionally supplied with an automatic regreasing device, see Regreasing intervals (Page 8). In this
case, the output-side bearing is not sealed with NILOS rings or caps.
3.2
Lubrication
In normal operating conditions and with low loads, the lubrication of the bearings is sufficient for approximately 25,000 to
30,000 operating hours.
For higher loads due to speed and / or temperature, schedule regreasing at shorter intervals.
3.2.1
Regreasing intervals
The regreasing interval is valid for a temperature of +70 °C, measured on the surface of the housing in the vicinity of the
bearing.
Note
For temperatures above +70
°C, the regreasing interval must be reduced by half for each temperature increase of 15 K.
Note
For moderate shock loading and vibration, the regreasing interval must be
reduced by 20 %.
For heavy loading, the regreasing interval must be reduced by half.
Regrease the bearing after the following number of operating hours.
Table 3-1 Regreasing intervals in operating hours for mixer flange
Output speed n2
Operating hours for size
88
108
128
148
168
[rpm]
[h]
≤ 30
16 000
14 000
14 000
12 000
10 000
31 … 50
12 000
10 000
10 000
10 000
9 000
51 … 100
9 000
7 000
7 000
7 000
5 000
101 … 150
7 000
5 000
5 000
4 000
4 000
151 … 250
4 000
4 000
4 000
3 000
3 000
251 … 400
3 000
3 000
3 000
1 000
1 000
3.2.2
Roller bearing grease
NOTICE
When regreasing do not mix greases with different soap bases
For regreasing, use lithium-saponified roller bearing grease NLGI 3/2.
Using a grease gun, inject the grease into the bearing point via the lubricating nipples provided.
The grease quantities listed in the table are guide values.

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Table 3-2 Grease quantities for regreasing the mixer flange
Regreasing interval
Grease quantity for regreasing for size
88
108
128
148
168
[g]
After 6 months
20
30
30
50
80
After several years without operation
50
80
90
130
200
3.3
Maintenance of the output-side bearing in the mixer flange
Note
Change the grease filling of the roller bearing when you change the gearbox oil.
For refilling,
use lithium-saponified roller bearing grease NLGI 3/2.
Procedure
1. Dismantle the output-side bearing unit.
2. Clean the bearing.
3. Fill the bearing with the new grease up to approximately 30 % of the free bearing chamber.
4. Reassemble the bearing unit.
Maintenance interval after regreasing
After regreasing, the maintenance interval can be increased to the following number of operating hours.
Table 3-3 Maintenance interval in operating hours after regreasing the mixer flange
Output speed n2
Operating hours for size
88
108
128
148
168
[rpm]
[h]
≤30
45 000
40 000
40 000
32 000
28 000
31 … 50
32 000
28 000
28 000
28 000
25 000
51 … 100
25 000
20 000
20 000
20 000
15 000
101 … 150
20 000
15 000
15 000
10 000
10 000
151 … 250
10 000
10 000
10 000
8 000
8 000
251 … 400
8 000
8 000
8 000
4 000
4 000
4
Extruder flange
For bevel helical gearbox KAE and parallel shaft gearbox FDAE/FZAE sizes 68 to 168
4.1
Technical description
The bevel helical gearbox and the parallel shaft gearbox can be supplied with an upstream extruder flange.
The bearing system with a powerful, self-aligning roller bearing is suitable for high axial forces in the gearbox direction.
The extruder flange is equipped with a separate oil chamber and is filled with the same type of oil as the gearbox.
4.2
Types of construction
The type of construction designations are in accordance with IEC 60034-7 (Code I).
The gearbox must be operated only in the type of construction specified on the rating plate. This ensures that the correct
quantity of lubricant is provided.

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Explanation of symbols in type of construction diagrams:
Ventilation
Oil level
Oil drain
Figure 4-1 Extruder flange for types of construction H-01, H-02, H-03, H-04 for KAE and FDAE/FZAE sizes 68 - 168
4.3
Oil quantities
NOTICE
Incorrect oil quantities damage the gearbox
The oil quantities in liters listed in the table are guide values for changing the oil. They are used, for example, for lubricant
storage and procurement.
The precise oil quantities are stated on the gearbox or geared motor rating plate.
Check the oil level before commissioning.
Table 4-1 Oil quantities for extruder flange
Types of construction
Size
68
88
108
128
148
168
H-01, H-02, H-03, H-04
0.5
0.8
1.1
1.7
2.5
3.6
5
Helical gearbox with slide ring seal DU/ZU
5.1
Technical description
The helical gearbox with slide ring seal is delivered ready for operation with the appropriate lubricant.
It is equipped with screw plugs and is used in a closed state.
CAUTION
If other sealing elements are used, moisture will enter the gearbox
Do not exchange the screw plugs for other types of sealing element.
CAUTION
Dry running will destroy the seal
In every operating condition, the slide ring seal must be completely flushed with fluid.

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CAUTION
Sharp-edged parts in the sealing area destroy the seal's coating
The flushing medium must not damage the slide ring seal.
The slide ring seal is designed according to DIN 24960. It is independent of the direction of rotation and is not balanced.
The slide ring seal is particularly suitable for media containing solids, such as waste water.
The sliding surfaces are made from silicon carbide, the bellows from fluoroelastomer (FKM). The output shaft, the featherkey
and the steel parts adjacent to the slide ring seal are made from stainless steel 1.4571 (CrNiMo steel).
The pressure to be sealed pmax. is 3 bar and the medium temperature up to +60 °C.
Operate the slide ring seal at a temperature sufficiently above the freezing point of the medium for safety.
5.2
Maintenance
The slide ring seal is maintenance-free.
Replace the slide ring seal as part of a plant overhaul if it is worn or disassembled.
CAUTION
The protective sleeve 175 keeps coarse contamination away from the slide ring seal
Do not seal holes and gaps.
Figure 5-1 Protective sleeve for slide ring seal
5.3
Mounting an IEC motor
CAUTION
If geared motors are inadequately sealed, moisture can enter the motor
Seal the flange and bolts using an appropriate sealing compound, e.g. Loctite 574.
A flange-mounted motor must be sealed across the entire contact surface.
Note
Exercise particular care during mounting and installation. The manufacturer cannot be held liable for damage caused by
incorrect mounting and installation.

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Figure 5-2 Surface to be sealed when mounting an IEC motor
Procedure
1. Clean the surfaces to be sealed on the motor and coupling lantern.
2. Coat the entire surface with an appropriate sealing compound.
3. Flange-mount the motor to the coupling lantern and secure it using the prescribed torque.
4. Apply a suitable protective coating to the interface and the entire geared motor to prevent corrosion.
The general tolerance for the tightening torque is 10 %. The tightening torque is based on a friction coefficient of μ = 0.14.
Table 5-1 Tightening torques for fastening bolts
Thread size
Tightening torque for strength class
8.8
10.9
12.9
[Nm]
[Nm]
[Nm]
M4
3
4
5
M5
6
9
10
M6
10
15
18
M8
25
35
41
M10
50
70
85
M12
90
120
145
M16
210
295
355
M20
450
580
690
M24
750
1 000
1 200
M30
1 500
2 000
2 400
M36
2 500
3 600
4 200
6
Automatic regreasing device
The agitator flange and the mixer flange can be optionally supplied with an automatic regreasing device.
The automatic regreasing device can be disassembled in any position and can be used underwater.

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①
Lubrication time controller
②
Pressure generator
③
H2gas
④
Pressure piston
⑤
Transparent housing
⑥
Roller bearing grease
⑦
Container floor
⑧
Connection thread
Figure 6-1 Automatic regreasing device
Table 6-1 Technical data
Grease fill quantity
125 ml
Adjustable lubrication time
0 ... 12 months
Permissible ambient temperature
-20° C ... +55° C
Maximum operating pressure
3 bar
Pressure generator
Hydrogen gas generating cell
Recommended storage temperature
+20° C
Usage period
Within 2 years of filling date
Weight including grease fill
approx. 190 g
Commissioning
CAUTION
Closed lubricator bursts
Overpressure will result if the lubricator is not opened and the grease channels are contaminated. At an overpressure of
approximately 5 bar, the lubricator will burst at the preset breaking point between the housing and the funnel.
Open the lubricator before commissioning.
Press fresh grease into blocked channels with a grease gun.
Note
Fill the lubricant channels and be
aring with grease before installing the lubricator.
Procedure
1. Clean the area around the connection thread of the greasing point.
2. Use a knife to cut off the seal at the lubricator outlet, or remove the screw plugs.

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Figure 6-2 Sealing the lubricator
3. Screw the lubricator into the connection thread.
Setting the lubrication times
CAUTION
Setting the wrong lubrication time
The lubrication time is heavily influenced by the resistance in the lubricant channels and the ambient temperature.
Check the actual lubrication time during operation.
The actual lubrication time is the time it takes for the lubricator to be completely emptied. It is influenced by the resistance in
the lubricant channels and the ambient temperature.
At ambient temperatures of -10° C, the actual lubrication time is double the set lubrication time.
At ambient temperatures of +40° C, the actual lubrication time drops to approximately half the set lubrication time.
Figure 6-3 Lubrication time controller
Procedure
1. Set the lubrication time with a 3 mm Allen key.
2. Note the date of commissioning and the lubrication time on the lubricator.
The times in months listed in the table are guide values.
Table 6-2 Timing in months on the lubrication time controller
Size
68
88
108
128
148
168
Months
-
12
11
9
7
5

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7
Labyrinth seal
The labyrinth seal is used in dusty environments. A combination of a radial shaft sealing ring ①and a labyrinth seal ②
prevents the ingress of dust.
①
Radial shaft sealing ring
②
Labyrinth seal
Figure 7-1 Labyrinth seal
Note
Regreasing of the labyrinth seal
The labyrinth seal is filled with grease. It must
be regularly regreased depending on the ambient conditions.
Procedure
1. Use the greases from table T 7300 for the regreasing. The grease quality must meet the requirements specified in the
table.
2. The reference value for regreasing is 30 g lubricating grease after 3000 operating hours.
3. Using a grease gun, inject the grease into the bearing point via the nipple provided.
You have regressed the labyrinth seal.

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8
Dry-well version
①
Output shaft
②
Shaft sealing ring
③
Oil collecting chamber of the dry-well flange
④
Oil sensor
Figure 8-1 Dry-well version for agitator flange and mixer flange
The dry-well version offers increased protection against oil leaks for the agitator flange and mixer flange, if the output shaft
①is pointing downwards.
If the shaft sealing ring ②fails, gearbox oil escapes. This oil is collected in a chamber ③of the dry-well flange. An oil
sensor ④reports this optically or electronically.

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9
Gearbox cooling
9.1
Heat exchanger unit
9.1.1
Design and mode of operation
MOTOX helical gearboxes, parallel shaft gearboxes and bevel gearboxes can be equipped with a heat exchanger unit to
reduce the temperature of the gearbox oil. The coolant that flows through the heat exchanger unit dissipates the heat.
The heat exchanger unit is mounted on the gearbox cover. The piping for feeding and extracting the coolant is connected to
the cover. There is no preferred direction of flow.
①
Cast iron end cap
②
Brass end plate
③
Aluminum cooling fins
④
Copper pipes
Figure 9-1 Heat exchanger unit
9.1.2
Technical data
Figure 9-2 Heat exchanger unit dimensions

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Table 9-1 Gearbox - heat exchanger unit
Gearbox
d1
d2
e
[mm]
["]
[mm]
Z.128
104 R1/2 35
Z.148
Z.168
Z.188
K.108
K.128
K.148
127 R1 39
K.168
K.188
FZ.108B
104 R1/2 35
FZ.128B
FZ.148B
FZ.168B
FZ.188B
127 R1 39
FZ.208
9.1.3
Coolant - water and oil
Coolant - water
CAUTION
Not suitable for seawater
The heat exchanger unit is not suitable for seawater.
CAUTION
Usage below 4 °C
The coolant must be mixed with anti-freeze.
The freezing temperature of the coolant must always be lower than the possible outside temperature.
CAUTION
Avoid corrosion
The pH value of the cooling water must be ≥ 6.
For alkaline water the water hardness should be ≥6°dH.
Take the water quality and constituents into consideration when you assess the suitability of the existing water for the unit.
Do not use contaminated cooling water. If the heat exchanger unit is contaminated, a blockage may occur and this will lead
to failure of the oil cooling.
Industrial water and water from streams and rivers is untreated and is not suitable as drinking water. Since this water may
contain a considerable amount of chemical impurities, a water analysis is required to provide a precise assessment.
Normally, copper, brass and steel are highly resistant to industrial water.
Observe the following limit values:
Flow rate - volumetric flow
Pressure
Water temperature
[l/min]
[bar]
[°C]
4 … 17
Max. 16
5 … 30