Lutz MDxL Series User manual

0698-825 MD1xL / MD2xL - 06/2021
Operating instructions
COMPRESSED AIR MOTORS 3-16
Manuel d’utilisation
MOTEURS PNEUMATIQUES 17-30
Manual de instrucciones
MOTORES DE AIRE COMPRIMIDO 31-43
Type/Tipo
MD1xL
MD2xL
en
fr
Read this manual before start up!
Avant la mise en service de la pompe, lisez ce mode d‘emploi!
Lea las instrucciones antes de la puesta en marcha.
To be retained for future reference.
Document de référence à conserver!
Conservar para una futura referencia.
es

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Fig. / Dessin 2 Fig. / Dessin 4 Fig. / Dessin 5

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Table of Contents
1. Concerning this manual.................................................................................................................... 4
1.1 Terms.......................................................................................................................................... 4
1.2 Target groups ............................................................................................................................. 4
1.3 Associated applicable documents .............................................................................................. 4
1.4 Warnings and symbols............................................................................................................... 4
1.5 Latest version ............................................................................................................................. 4
1.6 Copyright .................................................................................................................................. 4
2. Safety ................................................................................................................................................ 5
2.1 General safety information......................................................................................................... 5
2.2 Proper use .................................................................................................................................. 6
 2.3 Specicdanger........................................................................................................................... 7
 2.4 Identication.............................................................................................................................. 8
3. Transport and storage....................................................................................................................... 8
3.1 Transport .................................................................................................................................... 8
3.2 Storage ....................................................................................................................................... 8
4. Starting up ........................................................................................................................................ 9
4.1 Compressed air connection........................................................................................................ 9
4.2 Assembly of pump tube to the motor....................................................................................... 10
5. Operation........................................................................................................................................ 11
5.1 Controlling compressed air motor MD1xL ............................................................................... 11
5.2 Controlling compressed air MD2xL .......................................................................................... 11
6. Maintenance and servicing............................................................................................................. 11
7. Repairs ............................................................................................................................................ 12
8. Disposal .......................................................................................................................................... 12
9. Instructions for the explosion protection........................................................................................ 12
9.1 Marking.................................................................................................................................... 12
9.2 Explosion protection regulations.............................................................................................. 12
 9.3 Identiedignitionhazardsandtheimplementedprotectivemeasures.................................. 12
9.4 Equipotential bonding and earthing........................................................................................ 13
9.5 Traceability ............................................................................................................................... 14
10.Product warranty ............................................................................................................................ 14
Annex.................................................................................................................................................... 15

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1. Concerning this manual
This manual
• is part of this product
• is valid for all mentioned series
• describes the safe and proper use in all operating
stages
1.1 Terms
User: Single person or organisation who is using
the products e.g. customer, user, assistant
Children:Young persons up to and including the
age of 14 years.
1.2 Target groups
Target group Task
User ►Retain these operating
instructions at the product’s
place of use for future
reference.
►Demandthestatoreadand
observe these instructions
and the additional valid
documents, in particular
the safety information and
warnings.
►Observe additional
regulations and instructions
concerning the plant.
Qualied
personnel,
installer
►Read, observe and follow
these instructions and the
additional valid documents, in
particular the safety informa-
tion and warnings.
Tab. 1: Target groups and their tasks
1.3 Associated applicable
documents
Document Purpose
Operating instructions
pump tube
Safe and proper use of
the pump tube
Supplementary
operating instructions
for additional delivered
components
Tab. 2: Associated applicable documents and purpose
1.4 Warnings and symbols
Warning Level of
risk
Consequences
in case of non-
compliance
DANGER direct
danger
death or serious
injury
WARNING possible
direct
danger
death or serious
injury
CAUTION possible
dangerous
situation
light injury
NOTICE possible
dangerous
situation
damage of
property
Tab. 3: Warnings and consequences in case of non-
compliance
Symbol Meaning
Safety information
►Comply with all measures that
are marked with a safety sign to
prevent injuries or death.
iInformation / Recommendation
►What to do
→Cross reference
3Requirement
Tab. 4: Symbols and meaning
1.5 Latest version
Pleasendthelatestversionofthisoperating
instruction manual online at
www.lutzpumpsamerica.com.
1.6 Copyright
The content of this operating instruction and the
images contained in them are subject to the copy-
right protection of Lutz Pumpen GmbH.

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2. Safety
The manufacturer will not be held responsible for
any damages resulting from non-compliance of
the overall documentation, in particular for dam-
ages in case of non-compliance of the operating
instructions.
2.1 General safety information
Observe following regulations before accomplish-
ing all activities.
Product safety
The motor is constructed in conformity with the
state of the art and approved safety-related stand-
ards. Danger however can occur during use for life
and health of the user or third parties or damage
of the motor and other material assets. Therefore:
• Operate the motor only in a technically sound
state, for its proper use, and conscious of safety
and hazards taking into account these instruc-
tions.
• Ensure that these instructions and all associated
applicable documents are complete, legible, and
stored in a place that personnel can access at all
times.
• Refrain from any manner of working that endan-
gers personnel or uninvolved third parties.
• In the case of a safety-relevant malfunction, stop
the motor immediately and enlist a responsible
person to rectify the malfunction.
• In addition to the overall documentation, ob-
serve the statutory or other safety and accident
prevention regulations, as well as the valid stand-
ards and guidelines of the respective operating
country.
Modications
Unless the manufacturer has provided its consent
in writing, the manufacturer is not liable for
interventionsperformedbytheuser(modications)
on the product, such as conversion, alteration,
newdesign,etc.Modicationsnotagreedwith
themanufacturermayhavethefollowingeects,
among others:
• Functional impairments on the appliance or plant
• Damage to the appliance and other property
damage
• Environmental damage
• Personal injuries right through to death
Duties of the operator
Safety-conscious working
• Operate the motor only in a technically sound
state, for its proper use, and conscious of safety
and hazards taking into account these instruc-
tions.
• Ensure observance and monitoring of:
- Proper use
- Statutory or other safety and accident preven-
tion regulations
- Safety provisions in handling hazardous sub-
stances
- Valid standards and guidelines in the respec-
tive country of operation
• Provide protective equipment.

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Personnel qualication
• This device must not be used by children. It may
be used by persons of reduced physical, senso-
ry or mental capacity or by persons lacking in
experience or knowledge provided that they are
supervised or have been instructed in the safe
use of the device and understand the associated
hazards. Cleaning or user maintenance must not
be performed by children.
• Ensure that personnel tasked with work on
the motor have read and understood these
instructions and all associated applicable
documents, particularly safety, maintenance and
servicing information, before they start work.
• Clarify responsibilities, competencies and mon-
itoring of the personnel.
• Ensure that all work is carried out by technical
qualiedpersonnelonly:
- Assembly, servicing, maintenance work
- Work on the electrics
• Personnel to be trained must only work on the
motor under the supervision of technical person-
nel.
• Personnel holding the motor in their hands
during operation will be subjected to vibrations.
Statutory warranty
• During the guarantee period, obtain the manu-
facturer'spermissionformodications,mainte-
nance work or alteration.
• Use only original parts.
Duties of the personnel
• Observe the notices on the motor and maintain
them in a legible state.
• Use protective equipment where necessary.
• Only perform work on the motor during down-
time.
• Disconnect the motor from the compressed air
during all assembly and maintenance work.
• After completing all the work on the motor,
remount the safety devices in accordance with
specications.
2.2 Proper use
A compressed air driven drum and container pump
comprises motor and pump tube to suit the particu-
lar application. Application of the compressed air
motors MD1xL and MD2xL in explosive hazard areas
orforpumpingammableliquidsisonlyallowed
in combination with a pump tube approved for
category 1/2 G.
• Motor may only be operated with pump tube.
• The motor must not be immersed in the liquid
being pumped.
• The motor can be used in the following environ-
ment:
- temporarily outdoors without protection from
weathereects
- on roofed surfaces
- in open and closed rooms
- in explosive hazard areas
• Observe following technical data:
Type MD1xL MD2xL
Power output 1.34 hp / 1000 W
Max. operating
pressure 87 psi / 6 bar 4)
Air consumption1) 53 SCFM / 1.5 Nm³/min
Ambient
temperature
-4°F up to 140°F /
-20°C up to +60°C
Marking2) II 2G Ex h IIB T6 Gb
II 2D Ex h IIIC T80°C Db
Sound pressure
level3) <85dB(A)
Sound power level <96dB(A)
Weight 2.2 lb /
1.0 kg
3.0 lb /
1.4 kg
Order No. 0004-725 0004-735
1) In standard condition (Characteristics of the air consump-
tion →Annex)
2) Drum pumps are approved for explosion groups IIA and
IIB and temperature class T4. As a result hereof, the
combination motor/pump tube is also approved only for
matters(liquidtobepumpedand/orenvironment)ofthis
classication.
3) Measuredat87psi(6bar)operatingpressurewithfully
throttled pump tube
4) 72,5psi(5bar)foroperationinhazardousareasorwhen
pumpingammableliquids.

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If the product and supplied accessories are used for
other purposes than the intended purpose, it is the
responsibility of the user to check the suitability and
admissibility.Productusenotconrmedinwriting
by the manufacturer absolves the manufacturer of
any liability.
The manufacturer is not liable for consequences of
incorrect treatment, use, maintenance, servicing
and operation of the appliance, as well as normal
wear and tear. The same applies if faults arise from
modicationsorcongurationsonthepartofthe
user not authorized by the manufacturer.
Prevention of obvious
misapplication (examples)
• Motor may only be operated with correctly
mounted pump tube.
• Motor may only be used in permissible explo-
sion hazard area
• Use suitable compressed air supply
• Do not connect the compressed air supply
while the engine is switched on
• Do not immerse the motor in the liquid being
pumped
• Do not drive inadmissible devices with the
motor
• Do not allow the motor to be operated by
children or people in need of protection
• Do not use improper accessories
• Do not use improper or inadmissible spare
parts
• Observe maintenance intervals
2.3 Specic danger
Explosion hazard area
!DANGER
Danger of explosion from use in an explosion
hazard area!
Whenpumpingammableliquids,theoperational
safety regulation and the following points have to
be observed:
• Compressed air motors are non-electrical oper-
atingappliancesnotrequiringocialapproval
when used in zone 1.
• The motors are therefore suitable for driving
explosion proof Lutz drum- and container pumps
Class I, Group D and C.
• Application restrictions are depending on the
respective pump tube (→operating instructions
pumptube).
• Only authorized for mobile use.
• Connect equipotential bonding (→chapter9).
• Useconductivepressurehosesonly(→operating
instructionspumptube).
• The pump motor must remain outside the drum
or container.
• Operating pressure must not exceed 72,5 psi
(5bar).
• The temperature of the compressed air supplied
must not exceed the max. permissible ambient
temperature.
• Motor and pump tube operation must be con-
trolled.
• Donotoperatethemotorwithammablegases.
• Prescribed inspection periods: Grooved ball
bearing and vane, both have to be exchanged
at latest after 1.000 operating hours.
• The presence of strong charge-generating
processes, in particular the arrangement within
transported dust and within a distance of 1 m
from high-voltage electrodes, must be excluded.
→Chapter 9: Instructions for the explosion
protection

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2.4 Identication
Rating plate
1Type
2Serial number of the motor
3Marking of explosion protection
4 Yearofconstructionofthemotor(lasttwodigitsoftheserialnumbere.g.-18for2018)
3. Transport and storage
3.1 Transport
Unpacking and checking condition of delivery
►Unpack the motor on receipt and check for transport damages.
►Report transport damages to the manufacturer immediately.
►Check that the consignment is complete as ordered.
3.2 Storage
►Storemotordry,protectedagainstweathereectsandUV-rays.

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4. Starting up
4.1 Compressed air connection
!WARNING
Danger of injury due to uncontrolled restarting of the motor!
►Switchingothemotorbeforeconnectingthecompressedair.
Fig. 1
Function and service life largely depend on the condition and pressure of the compressed air supplied.
Excessive moisture or dirt particles in the compressed air will destroy the motor. A high percentage of
condensateinthecompressedairwillcauseaslightrustdepositinthemotorandtheairoutletmuer
will get covered by ice during air expansion.
Therefore, when starting the compressed air motor, observe the following items (→Fig.1):
• Before connecting the motor to the compressed air supply, clean the compressed air line and the hose
by blowing out with low pressure to remove any dirt particles from the line. Wear safety goggles, hold
thelinetightanddonotstandintheareaoftheairow.
• Mainairlines(6)requireaslightinclinationofatleast1%inthedirectionofowsothatcondensation
watermaybedrainedthroughavalve(7)atthelowestpoint(manuallyorautomatically).
• Branchpipesshouldbeconnectedpointingupwards(5)inthecaseofahorizontalmainline(6)-and
inthecaseofaverticalmainline(4)notatthelowestpoint.Thus,anycondensationwatercollectedin
themainlinewillbepreventedfromowingintothebranch.

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• Usemaintenanceunits(3)consistingofairlter
and oiler. The oiler is not necessary for motors
MD1xL and MD2xL, but is recommended for
longerservicelife.Themotorpoweris10-20%
lower with non lubricated air than with lubricated
air.
• Install the maintenance unit with an air connec-
tion of at least G 1/4 in the immediate vicinity of
thecompressedairmotor(1).Usearesin-free
and acid-free mineral oil with a viscosity of 20 to
30cSt(20to30mm²/s)intheoiler(3).Theoil
consumption should be 1 drop per minute as a
minimum.
• Theair lter(3)requiresregularmaintenance
during which the trapped condensation water
isdrainedandthelteriscleaned.
• The compressed air motor will achieve maximum
performanceat87psi(6bar).Thepressurein
thepneumaticsystemexceeding87psi(6bar),
apressureregulator(3)mustbeinstalled.Ad-
justmentofthepressureregulator(3)mustbe
eectedwiththemotorrunning.
• Installanairhose(2)of1/2”(13mm)inside
diameter between maintenance unit and com-
pressed air motor to minimize the pressure
losses.
• Use a stop valve in the pressure line in order
to connect and disconnect the motor without
pressure.
• Note the resulting pressure loss when using
quick-action couplings.
Recommendation for compressed air supply
• Theclassicationofthecompressedairquality
can be taken from ISO 8573-1: 2010.
• Standard values of compressed air quality are
e.g. to be found in VDMA 15390-1: 2014-12.
• For lubricated air, a minimum compressed air
quality by ISO 8573-1: 2010 [-: 4: 4] is recom-
mended.
• For non lubricated air, a minimum compressed
air quality by ISO 8573-1: 2010 [6 3: 3] is recom-
mended.
• Excessive water contentin the compressedair can
cause freezing of the water particles. This may be
the cause for damaging the vanes or clogging the
muer,whichmayaecttheperformanceofthe
motor.
4.2 Assembly of pump tube to the
motor
3Motorisswitchedo
►Connect the motor with the pump tube.
►Turn the motor slightly to ensure that the
driver (→Fig.2,Item1)engagesinthe
coupling
(→Fig.2,Item2).
►Firmly connect the motor and pump tube by
meansofthehandwheel(right-handthread)
(→Fig.2).