MR MESSKO MMK User manual

Oil Level Indicator
MESSKO® MMK
Operating Instructions
5793437-01 EN

© All rights reserved by Messko GmbH
Dissemination and reproduction of this document and use and disclosure of its
content are strictly prohibited unless expressly permitted.
Infringements will result in liability for compensation. All rights reserved in the event
of the granting of patents, utility models or designs.
The product may have been altered since this document was published.
We reserve the right to change the technical data, design and scope of supply.
Generally the information provided and agreements made when processing the
individual quotations and orders are binding.
The original operating instructions were written in German.

Table of contents
35793437-01 EN
1 Introduction...........................................................................5
1.1 Manufacturer.................................................................................... 5
1.2 Safekeeping..................................................................................... 5
1.3 Notation conventions ....................................................................... 5
1.3.1 Hazard communication system .................................................................... 5
1.3.2 Information system....................................................................................... 7
1.3.3 Instruction system ........................................................................................ 7
1.3.4 Typographic conventions ............................................................................. 8
2 Safety.....................................................................................9
2.1 Appropriate use ............................................................................... 9
2.2 Fundamental safety instructions ...................................................... 9
2.3 Personnel qualification................................................................... 11
2.4 Personal protective equipment ...................................................... 13
3 Product description............................................................15
3.1 Scope of delivery ........................................................................... 15
3.2 Function description....................................................................... 15
3.3 Design/versions ............................................................................. 17
3.4 Nameplate ..................................................................................... 18
4 Packaging, transport and storage ....................................19
4.1 Purpose ......................................................................................... 19
4.2 Suitability, structure and production............................................... 19
4.3 Markings ........................................................................................ 19
4.4 Transportation, receipt and handling of shipments........................ 19
4.5 Storage of shipments..................................................................... 21
5 Mounting .............................................................................22
5.1 Removing the oil level indicator ..................................................... 22
5.2 Checking the flanges on the oil conservator.................................. 22

Table of contents
4 5793437-01 EN
5.3 Attaching the oil level indicator to the oil conservator.................... 23
5.4 Tests .............................................................................................. 27
5.5 Attaching limit switches to the measuring tube.............................. 28
5.6 Attaching the remote transmitter to the measuring tube................ 31
6 Maintenance and care ........................................................34
7 Disposal...............................................................................35
8 Technical data.....................................................................36
8.1 Oil level indicator ........................................................................... 36
8.2 Limit switch .................................................................................... 36
8.3 Remote transmitter ........................................................................ 37
8.4 Dimensional drawing ..................................................................... 38

1 Introduction
55793437-01 EN
This technical document contains detailed descriptions on the safe and
proper installation, connection, commissioning and monitoring of the prod-
uct.
This technical document is intended solely for specially trained and autho-
rized personnel.
1.1 Manufacturer
The product is manufactured by:
Messko GmbH
Gewerbegebiet An den Drei Hasen
Messko-Platz 1
61440 Oberursel
Germany
Phone: [phone]
E-mail: [email protected]
Internet: www.reinhausen.com/messko
Further information on the product and copies of this technical document are
available from this address if required.
1.2 Safekeeping
Keep this technical file and all supporting documents ready at hand and ac-
cessible for future use at all times.
1.3 Notation conventions
This section contains an overview of the symbols and textual emphasis
used.
1.3.1 Hazard communication system
Warnings in this technical file are displayed as follows.
1.3.1.1 Warning relating to section
Warnings relating to sections refer to entire chapters or sections, sub-sec-
tions or several paragraphs within this technical file. Warnings relating to
sections use the following format:

1 Introduction
6 5793437-01 EN
WARNING
Type and source of danger
Consequences
► Action
► Action
1.3.1.2 Embedded warning information
Embedded warnings refer to a particular part within a section. These warn-
ings apply to smaller units of information than the warnings relating to sec-
tions. Embedded warnings use the following format:
DANGER! Instruction for avoiding a dangerous situation.
1.3.1.3 Signal words and pictograms
The following signal words are used:
Signal word Definition
DANGER Indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION Indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
NOTICE Indicates measures to be taken to prevent damage to property.
Table1: Signal words in warning notices

1 Introduction
75793437-01 EN
Pictograms warn of dangers:
Pictogram Definition
Warning of a danger point
Warning of dangerous electrical voltage
Warning of combustible substances
Warning of a tipping hazard
Warning of a hot surface
Table2: Pictograms used in warning notices
1.3.2 Information system
Information is designed to simplify and improve understanding of particular
procedures. In this technical file it is laid out as follows:
Important information.
1.3.3 Instruction system
This technical file contains single-step and multi-step instructions.

1 Introduction
8 5793437-01 EN
Single-step instructions
Instructions which consist of only a single process step are structured as fol-
lows:
Aim of action
üRequirements (optional).
► Step 1 of 1.
ðResult of step (optional).
ðResult of action (optional).
Multi-step instructions
Instructions which consist of several process steps are structured as follows:
Aim of action
üRequirements (optional).
1. Step 1.
ðResult of step (optional).
2. Step 2.
ðResult of step (optional).
ðResult of action (optional).
1.3.4 Typographic conventions
The following typographic conventions are used in this technical file:
Typographic convention Purpose Example
UPPERCASE Operating controls,
switches
ON/OFF
[Brackets] PC keyboard [Ctrl] + [Alt]
Bold Software operating con-
trols
Press Continue button
…>…>… Menu paths Parameter > Control pa-
rameter
Italics System messages, error
messages, signals
Function monitoring alarm
triggered
[► Number of pages]. Cross reference [► 41].
Table3: Typographic conventions

2 Safety
95793437-01 EN
This technical document contains detailed descriptions on the safe and
proper installation, connection, commissioning and monitoring of the prod-
uct.
▪ Read this technical file through carefully to familiarize yourself with the
product.
▪ This technical file is a part of the product.
▪ Read and observe the safety instructions provided in this chapter in partic-
ular.
▪ Observe the warnings in this technical file in order to avoid function-re-
lated dangers.
▪ The product is manufactured on the basis of state-of-the-art technology.
Nevertheless, risks to life and limb for the user or impairment of the prod-
uct and other material assets may arise in the event of improper use.
2.1 Appropriate use
The oil level indicator displays the oil level of the transformer's oil conserva-
tor using a float gauge and magnetic flaps.
The product is designed solely for use in electrical energy systems and facili-
ties. If used as intended, in compliance with the requirements and conditions
specified in this technical document and the warning notices in this technical
document and attached to the product, the product does not pose risk of in-
jury or damage to property or the environment. This applies across the entire
service life of the product, from delivery to installation and operation through
to disassembly and disposal.
The following is considered appropriate use:
▪ Use the product only with the transformer specified in the order.
▪ Operate the product in accordance with this technical document, the
agreed-upon delivery conditions and the technical data.
▪ Ensure that all necessary work is performed by qualified personnel only.
▪ Use the equipment and special tools supplied solely for the intended pur-
pose and in accordance with the specifications of this technical file.
2.2 Fundamental safety instructions
To prevent accidents, disruptions and damage as well as unacceptable ad-
verse effects on the environment, those responsible for transport, installa-
tion, operation, maintenance and disposal of the product or parts of the prod-
uct must ensure the following:

2 Safety
10 5793437-01 EN
Personal protective equipment
Loosely worn or unsuitable clothing increases the danger of becoming
trapped or caught up in rotating parts and the danger of getting caught on
protruding parts. This results in danger to life and limb.
▪ All necessary devices and personal protective equipment required for the
specific task, such as a hard hat, safety footwear, etc. must be worn. Ob-
serve the "Personal protective equipment" [►Section 2.4, Page 13] sec-
tion.
▪ Never wear damaged personal protective equipment.
▪ Never wear rings, necklaces or other jewelry.
▪ If you have long hair, wear a hairnet.
Work area
Untidy and poorly lit work areas can lead to accidents.
▪ Keep the work area clean and tidy.
▪ Make sure that the work area is well lit.
▪ Observe the applicable laws for accident prevention in the relevant coun-
try.
Explosion protection
Highly flammable or explosive gases, vapors and dusts can cause serious
explosions and fire.
▪ Do not install or operate the product in areas where a risk of explosion is
present.
Safety markings
Warning signs and safety information plates are safety markings on the
product. They are an important aspect of the safety concept. Safety mark-
ings are depicted and described in the chapter "Product description".
▪ Observe all safety markings on the product.
▪ Make sure all safety markings on the product remain intact and legible.
▪ Replace safety markings that are damaged or missing.

2 Safety
115793437-01 EN
Ambient conditions
To ensure reliable and safe operation, the product must only be operated
under the ambient conditions specified in the technical data.
▪ Observe the specified operating conditions and requirements for the in-
stallation location.
Modifications and conversions
Unauthorized or inappropriate changes to the product may lead to personal
injury, material damage and operational faults.
▪ Only modify the product after consultation with Messko GmbH.
Spare parts
Spare parts not approved by Messko GmbH may cause physical injury and
damage the product.
▪ Only use spare parts approved by the manufacturer.
▪ Contact Messko GmbH.
Working during operation
You must only operate the product when it is in a sound operational condi-
tion. Otherwise it poses a danger to life and limb.
▪ Regularly check the operational reliability of safety equipment.
▪ Perform the inspection tasks described in this technical document regu-
larly.
2.3 Personnel qualification
The person responsible for assembly, commissioning, operation and inspec-
tion must ensure that personnel are sufficiently qualified.
Electrically skilled person
The electrically skilled person has a technical qualification and therefore has
the required knowledge and experience, and is also conversant with the ap-
plicable standards and regulations. The electrically skilled person is also pro-
ficient in the following:
▪ Can identify potential dangers independently and is able to avoid them.
▪ Is able to perform work on electrical systems.

2 Safety
12 5793437-01 EN
▪ Is specially trained for the working environment in which (s)he works.
▪ Must satisfy the requirements of the applicable statutory regulations for
accident prevention.
Electrically trained persons
An electrically trained person receives instruction and guidance from an
electrically skilled person in relation to the tasks undertaken and the poten-
tial dangers in the event of inappropriate handling as well as the protective
devices and safety measures. The electrically trained person works exclu-
sively under the guidance and supervision of an electrically skilled person.
Operator
The operator uses and operates the product in line with this technical docu-
ment. The operating company provides the operator with instruction and
training on the specific tasks and the associated potential dangers arising
from improper handling.
Technical Service
We strongly recommend having repairs and retrofitting carried out by our
Technical Service department. This ensures that all work is performed cor-
rectly. If repair work is not carried out by our Technical Service department,
please ensure that the personnel who carry out the repairs are trained and
authorized to do so by Maschinenfabrik Reinhausen GmbH.
Maschinenfabrik Reinhausen GmbH
Technical Service
P.O. Box 12 03 60
93025 Regensburg
Germany
Phone: [phone]
E-mail: [email protected]
Internet: www.reinhausen.com

2 Safety
135793437-01 EN
2.4 Personal protective equipment
Personal protective equipment must be worn during work to minimize risks to
health.
▪ Always wear the personal protective equipment required for the job at
hand.
▪ Never wear damaged personal protective equipment.
▪ Observe information about personal protective equipment provided in the
work area.
Personal protective equipment to be worn at all times
Protective clothing
Close-fitting work clothing with a low tearing
strength, with tight sleeves and with no protrud-
ing parts. It mainly serves to protect the wearer
against being caught by moving machine parts.
Safety shoes
To protect against falling heavy objects and slip-
ping on slippery surfaces.
Special personal protective equipment for particular environments
Safety glasses
To protect the eyes from flying parts and splash-
ing liquids.
Visor
To protect the face from flying parts and splash-
ing liquids or other dangerous substances.
Hard hat
To protect from falling and flying parts and mate-
rials.

2 Safety
14 5793437-01 EN
Hearing protection
To protect from hearing damage.
Protective gloves
To protect from mechanical, thermal, and electri-
cal hazards.

3 Product description
155793437-01 EN
This chapter contains an overview of the design and function of the product.
3.1 Scope of delivery
The product is packaged with protection against moisture and is delivered as
follows:
▪ Oil level indicator
▪ Float gauge
▪ Flat gaskets
▪ Technical documents
3.2 Function description
The oil level indicator displays the oil level of the transformer's oil conserva-
tor using a float gauge and magnetic flaps. Permanent magnets are inte-
grated into the float gauge as well as in the magnetic flaps. The magnetic
flaps are movable and have a white and a red side. The float gauge turns
the magnetic flaps 180° from white to red when the fill level increases and
180° from red to white when the fill level drops. This allows the oil level of
the oil conservator to be read easily from outside even at greater distances.

3 Product description
16 5793437-01 EN
Using the optionally available limit switches and remote measured value
transmission, you can also monitor the fill level of the oil conservator and
transmit measured values.
Figure1: Oil conservator with oil level indicator
1 Oil conservator 2 Oil level indicator

3 Product description
175793437-01 EN
3.3 Design/versions
Figure2: Oil level indicator
1 Top part 2 Sealing ring
3 End cap 4 Clip
5 Oil conservator 6 Indicator rail

3 Product description
18 5793437-01 EN
7 Magnetic flaps 8 Clip
9 Sealing ring 10 Oil drain screw
11 Stop valve 12 Bottom part
13 End cap 14 Measuring tube
15 Lower limit switch (optional) 16 Float gauge with magnet
17 Remote transmitter (optional) 18 Upper limit switch (optional)
19 Flat gaskets
3.4 Nameplate
The nameplate is located on the measuring tube.
Figure3: Nameplate

4 Packaging, transport and storage
195793437-01 EN
4.1 Purpose
The packaging is designed to protect the packaged product during transport,
loading, unloading and during periods of storage in such a way that no detri-
mental changes occur. The packaging must protect the goods against per-
mitted transport stresses such as vibration, knocks and moisture (rain, snow,
condensation).
The packaging also prevents the packaged goods from moving impermissi-
bly within the packaging.
4.2 Suitability, structure and production
The goods are packaged in a sturdy cardboard box. This ensures that the
shipment is secure when in the intended transportation position and that
none of its parts touch the loading surface of the means of transport or touch
the ground after unloading.
Inlays inside the box stabilize the goods, preventing prohibited changes in
position, and protecting them from vibration.
4.3 Markings
The packaging bears a signature with instructions for safe transport and cor-
rect storage. The following symbols apply to the shipment of non-hazardous
goods. Adherence to these symbols is mandatory.
Protect against
moisture
Top Fragile Attach lifting
gear here
Center of mass
Table4: Shipping pictograms
4.4 Transportation, receipt and handling of shipments
In addition to vibrations, jolts must also be expected during transportation. In
order to prevent possible damage, avoid dropping, tipping, knocking over
and colliding with the product.
Should the packaging tip over or fall, damage is to be expected regardless of
the weight.

4 Packaging, transport and storage
20 5793437-01 EN
Every delivered shipment must be checked for the following by the recipient
before acceptance (acknowledgment of receipt):
▪ Completeness based on the delivery slip
▪ External damage of any kind.
The checks must take place after unloading, when the box or transport con-
tainer can be accessed from all sides.
Visible damage
If externally visible transport damage is detected upon receipt of the ship-
ment, proceed as follows:
▪ Immediately record the transport damage found in the shipping docu-
ments and have this countersigned by the deliverer.
▪ In the event of severe damage, total loss or high damage costs, immedi-
ately notify the sales department at Messko GmbH and the relevant insur-
ance company.
▪ After identifying damage, do not modify the condition of the shipment fur-
ther and retain the packaging material until an inspection decision has
been made by the transport company or the insurance company.
▪ Record the details of the damage on-site immediately with the transport
company involved. This is essential for any claim for damages!
▪ If possible, photograph damage to packaging and packaged goods. This
also applies to signs of corrosion on the packaged goods due to moisture
(rain, snow, condensation) infiltrating the packaging.
▪ Make sure you also check the sealed packaging.
Hidden damage
In the event of damage that is not detected until unpacking after receipt of
the shipment (hidden damage), proceed as follows:
▪ Make the party potentially responsible for the damage liable as soon as
possible by telephone and in writing, and prepare a damage report.
▪ Observe the time periods applicable to such actions in the respective
country. Inquire about these in good time.
With hidden damage, it is very hard to make the transportation company (or
other responsible party) liable. Any insurance claims for such damage can
be successful only if relevant provisions are expressly included in the insur-
ance terms and conditions.