MAXIMATOR DLE User manual

Compressed air driven gas booster
DLE, 8DLE, 14DLE, MDLE, SDLE
Installation and operating manual

1 0000000141 - 002 - EN
Key information!
Follow the manual for safe and proper use.
Keep the manual near the machine for later reference.
MAXIMATOR GmbH
Lange Strasse 6
99734 Nordhausen
Germany
Phone: [phone]
e-mail: [e-mail]
Internet: www.maximator.de
Warranty and liability:
As a general rule, the “General Terms and Conditions” of Maximator GmbH shall apply. These
terms and conditions are available at http://www.maximator.de.
Warranty and liability claims shall not be accepted if they can be attributed to one or more of the
causes mentioned in this manual or explicitly stipulated below:
–Use other than the intended use stated in this document
–Improper commissioning, operation or maintenance
–Operation with faulty safety equipment or incorrectly installed safety equipment and safe-
guards
–Failure to observe the commissioning, operation and maintenance instructions in this man-
ual
–Insufficient monitoring of wear parts
–Wear on seals, guiding elements, etc. due to ageing and operation
26.04.2021 Translation of the Original
© Copyright 2021 Maximator GmbH - All rights reserved

Contents
0000000141 - 002 - EN 2
Contents
1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Information regarding this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Rating plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 List of abbreviations and formula signs used . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.6 Qualification of the personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety and protection measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Personal protective equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Signs and labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Work and danger zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Non obvious hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Residual risks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5.1 Start-up and shut down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5.2 Risk of injury posed by noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5.3 Hazardous operating fluids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Product description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Design and function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Foreseeable misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.6 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.6.1 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.6.2 Dimensions and weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.6.3 Performance values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.6.4 Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4 Transport, packaging and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1 Dimensions and weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Contents
3 0000000141 - 002 - EN
5.1 Prerequisites for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Gas booster installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.3 Installation of connecting lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.3.1 Connecting the drive air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3.2 Control air connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3.3 Connecting the inlet line and outlet line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3.4 Connecting a separate bleed pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3.5 Purge line connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3.6 Exhaust silencer installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.4 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.4.1 Prerequisites for commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.4.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1 Prerequisites for operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.2 Normal, safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.3 Abnormal situations during operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.4 Signs indicating the product is no longer safe to use . . . . . . . . . . . . . . . . . . . . . 29
6.5 Putting the gas booster in a safe state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.1 Maintenance intervals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.2 Maintenance work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2.1 System inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2.2 Leak-testing the connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2.3 Check screw fittings and connecting lines for damages . . . . . . . . . . . . . . . . . . . 33
7.2.4 Clean gas booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2.5 Check fastening elements and connecting elements . . . . . . . . . . . . . . . . . . . . . 34
7.2.6 Leak detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.2.7 Repair gas booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.3 Spare parts and consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.4 Accessories and special tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.5 Customer service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.1 Drive side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.2 High pressure side. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9 Removal and disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.1 Prerequisites for removal and disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Contents
0000000141 - 002 - EN 4
9.2 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
10 Use in explosion-prone zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.2 Temperature class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.3 Operation and maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10.4 Operation with combustible operating fluids. . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.4.1 Purging plans for the compression of combustible gases . . . . . . . . . . . . . . . . . . 45
10.4.2 Alternative purging options for the compression of combustible gases . . . . . . . . 47
11 Summary of ignition hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
12 Applications with oxidising operating fluids . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

General information
5 0000000141 - 002 - EN
1 General information
1.1 Information regarding this manual
Maximator gas boosters can be used for a variety of applications. They are used
to deliver gases and compress them to high pressures. This manual applies to all
gas boosters with the following options in the order code: DLE, 8DLE, 14DLE,
MDLE, SDLE and a serial number above 20000001.
The general drawing included is an integral part of this manual, and must be
stored with it.
1.2 Order code
The order code for gas boosters is structured as follows:
a Model
b Number of drive pistons
without = 1 drive piston
2= 2 drive pistons
3= 3 drive pistons
c Thread (gas inlet and outlet)
G = pipe thread (standard)
U = high-pressure connection (UNF)
N = NPT
d Option code
Additional codes for device options and/or variants may be en-
tered here.

General information
0000000141 - 002 - EN 6
1.3 Rating plate
The rating plate is located on the drive cylinder of the gas booster and contains
the following information:1:
Fig. 1-1 Gas booster rating plate
1.4 Explanation of symbols
DANGER
This combination of symbol and signal word indicates a hazardous situation
which - if not avoided - may lead to severe injuries or death.
1Individual gas boosters may have different rating plates, e.g. made of metal
1 Maximum permitted operating
pressure
2 Compressed air driven gas boost-
er
3 Type (specifications from the or-
der code)
4 Maximum drive pressure
5 Minimum inlet pressure
6 Calendar week/year of manufac-
ture
7 Article number
8 Serial number
9 Pressure ratio
10 EAC label
11 Manufacturer contact informa-
tion
12 Operating temperature range
13 ATEX label
14 Maximum standstill pressure

General information
7 0000000141 - 002 - EN
WARNING
This combination of symbol and signal word indicates a potentially hazardous sit-
uation which - if not avoided - may lead to severe injuries or death.
CAUTION
This combination of symbol and signal word indicates a potentially hazardous sit-
uation which - if not avoided - may lead to light or minor injuries.
NOTICE
This combination of symbol and signal word indicates a potentially hazardous sit-
uation which - if not avoided - may lead to property damage or damage to the
environment.
This symbol characterises contents and instructions for the intended use in po-
tentially explosive areas.
This symbol highlights useful tips and recommendations as well as information
for efficient and flawless operation.
1.5 List of abbreviations and formula signs used
Tab. 1-1 List of abbreviations
Abbreviation Description
Tab. Table
Fig. Figure
EAC Eurasian economic union mark of conformity
CE EU mark of conformity
DGRL EU pressure equipment directive
ATEX EU explosion prevention directive
max. maximum
min. minimum
H2 Symbol for hydrogen
No. Number
CET Central European Time
EPL Equipment Protection Level

General information
0000000141 - 002 - EN 8
Tab. 1-2 Formula symbol
1.6 Qualification of the personnel
Qualified personnel is required to work on and with the Maximator gas booster
safely and properly. Allowing unqualified personnel to work on the gas booster
or enter the danger zone creates hazards which could lead to death, severe inju-
ries and significant property damage.
Formula
symbol
Description
i, i1, i2Gear ratio
Leq Noise emission
pAInlet gas pressure
pBOperating pressure
pB max. maximum permitted operating pressure
pLDrive pressure
TA, TBTemperature
κ Isentropic exponent

General information
9 0000000141 - 002 - EN
Tab. 1-3 Qualification of the personnel
Qualifications
System design Transport and storage Installation Commissioning Operation Tooling and set-up Cleaning Repair and maintenance De-installation Operator
Understands the general mode
of operation
x x x x
Understands the detailed
mode of operation
x x x
Able to read and comprehend
work-related documents
x x x x
Able to read and comprehend
work-related drawings/plans/
documents
x x x x x
Possesses comprehensive tech-
nical expertise
x x x x x x x x x
Familiar with the technical
safety labels utilised
x x x x x x x x
Able to identify and adjust safe-
ty features
xxx
Able to identify the risks specif-
ic to the work and comply with
appropriate protective mea-
sures
x
Able to identify the risks specif-
ic to the work and derive ap-
propriate protective measures
x x x x x x x
Able to identify and interpret
the risks specific to the work
and derive appropriate protec-
tive measures
x
Knows and understands the rel-
evant standards, directives and
regulations and is able to apply
them
x x x

Safety and protection measures
0000000141 - 002 - EN 10
2 Safety and protection measures
The following sections stipulate the residual risks associated with the product,
even when used as intended. In order to reduce the risk of personal injuries and
material damage, and to prevent hazardous situations, you must observe the
safety information listed in this section and the warnings in all other sections of
this manual.
2.1 Personal protective equipment
Personal protective equipment protects personnel from occupational safety and
health hazards while at work.
Wearing personal protective equipment may be required during work on the
product. Wherever possible, this personal protective equipment is listed in these
instructions for the individual work steps.
However, detailed specifications of the required protective equipment can only
be determined with full knowledge of the system. The required personal protec-
tive equipment should therefore be determined by the manufacturer.
2.2 Signs and labels
The following signs are found on the gas booster.
Over time, labels can become unrecognisable due to dirt or other causes. As a re-
sult, hazards may be harder to identify, and important operating procedures may
not be properly followed. Resulting errors can lead to severe injuries or death.
Keep the labels in good, legible condition and replace any damaged labels.
Tab. 2-1 Overview of labels
2.3 Work and danger zones
The danger zone comprises the entire area surrounding the product. The hazards
associated with the product and the danger zone depend on the application and
the installation location. The danger zone should therefore be determined by the
manufacturer.
During assessment, check the following leak points:
Signs and labels Graphic display
Rating plate:
The rating plate is affixed
to the drive cylinder of the
gas booster. The rating
plate indicates the operat-
ing characteristics of the
gas booster.

Safety and protection measures
11 0000000141 - 002 - EN
Tab. 2-2 Leak point danger zone
2.4 Non obvious hazards
Using asphyxiant operating fluids, e.g. nitrogen, can lead to severe injuries or
death by asphyxiation. Assess the risk for the equipment in the risk assessment.
The following are some potential corrective actions:
–Operate the gas booster in an adequately ventilated space.
–Check the gas booster for leaks on a regular basis.
–Ensure that lines are connected in such a way as to remain leak-tight for a
long time.
–If necessary, use connecting lines to remove the escaping operating fluids.
2.5 Residual risks
2.5.1 Start-up and shut down
During the restoration of the pneumatic energy supply, the gas booster may start
up unexpectedly. This can lead to severe injuries or death.
Assess the risk for the equipment in the risk assessment.
There is no command device for safe shut-down (E-stop). This can lead to severe
injuries or death.
Assess the risk for the equipment in the risk assessment.
2.5.2 Risk of injury posed by noise
The noise level emitted in the work area depends on the mounting and applica-
tion.
Assess the risk for the equipment in the risk assessment.
2.5.3 Hazardous operating fluids
Improper use of operating fluids can lead to serious accidents resulting in death.
Assess the risk for the equipment in the risk assessment.
Leak point Leak type Leak source
Bleed port HP side Minor leakage High pressure seal
Bleed port drive Minor leakage Rod seal drive side
Booster head / cylinder Unexpected Sealing on booster head and
cylinder
Connection screw fitting Unexpected Loose screw connection
Connecting line drive / HP Unexpected Connecting line / fitting / O-
ring
Drive housing parts Unexpected Seal in drive unit

Product description
0000000141 - 002 - EN 12
Active leaks can lead to serious accidents resulting in death.
Assess the risk for the equipment in the risk assessment.
3 Product description
3.1 Design and function
Structure
Fig. 3-1 Schematic circuit diagram of the double-acting gas booster
Function description
The operating principle of a gas booster is similar to the one of a pressure inten-
sifier. Low pressure is applied to the large area of the air piston (9) which applies
high force to the small area of the high pressure piston (3).
The piston of the gas booster carries out oscillating movements until the stall
pressure is reached. In doing so, the high pressure piston induces and compress-
es the compressed fluid by means of the check valves into the gas inlet (2) and
gas outlet (4). The outlet pressure results from the set drive pressure, primary
pressure and volume flow.
The continuous supply is achieved by means of an internally controlled direction-
al valve, the spool valve (8). The spool valve alternately guides the drive fluid to
the two sides of the air piston. The spool valve is controlled via two directional
1 Pilot valve lower cap
2 Gas inlet (A)
3 High pressure piston
4 Gas outlet (B)
5 Control air port (X)
6 Exhaust port
7 Drive air inlet (pL)
8 Control slide valve
9 Air piston
10 Pilot valve top cap

Product description
13 0000000141 - 002 - EN
valves, the pilot valves (1; 10), which are operated mechanically by the air piston
at its end positions. The pilot valves vent the operating area of the control slide
valve.
An equilibrium of forces on the drive and high pressure side is generated as soon
as the stall pressure is reached. The gas booster stops and no longer consumes
drive fluid. A pressure drop on the high pressure side or a pressure increase on
the drive side result in an automatic restart of the gas booster while the com-
pressed fluid is compressed until an equilibrium of forces is restored.
In most gas boosters with a gear ratio of > 5, the exhaust air is passed through
the cooling cylinder and thus used to cool the high pressure cylinder.

Product description
0000000141 - 002 - EN 14
The individual gas booster types are shown below:
• Single-stage, single-acting with one drive part
• Single-stage, single-acting with two drive parts
• Single-stage, double-acting with one drive part
• Single-stage, double-acting with two drive parts

Product description
15 0000000141 - 002 - EN
• Single-stage, quadruple-acting with one drive part
• Single-stage, quadruple-acting with two drive parts
• Two-stage, double-acting with one drive part
• Two-stage, double-acting with two drive parts
• Two-stage, double-acting with three drive parts

Product description
0000000141 - 002 - EN 16
3.2 Intended use
Within their technical limits, gas boosters are used to deliver and compress suit-
able types of gases.
If the gas booster bears an ATEX label and comes with a declaration of conformi-
ty, it is designated for use in corresponding potentially explosive areas.
3.3 Foreseeable misuse
The product may only be used in accordance with the indications in this manual.
The product cannot be used for:
–breathing air
–sealing containers
–producing / processing food with direct contact
–producing pharmaceutical products in direct contact
3.4 Misuse
Unauthorised modifications or technical changes to the product may lead to ac-
cidents with serious or fatal injuries.
Never carry out unauthorised modifications or technical changes to the product!
3.5 Ports
Comply with the connected load specifications for all interface connections. Re-
fer to the enclosed general drawing for the connection ports available on the gas
booster.
The following interfaces are standard on the gas boosters:
Drive air inlet “PL“
Input of drive fluid.
Gas inlet “A”
Input of operating fluid.
Gas outlet “B”
Output of operating fluid.
Exhaust port “E”
Output of expanding drive fluid.
Control air port “X”
Port for control air. The gas booster only operates if the control air connection is
pressurized. The pressure of the control air must always be larger or equal to the
drive pressure to ensure proper function. The same requirements regarding
compressed air quality apply to the control air as to the drive air.

Product description
17 0000000141 - 002 - EN
Spool valve “V” ventilation port
Ventilation and bleeding of the spool valve. The port must not be obstructed.
Pilot valve “Y” exhaust port
Bleeding of the spool valve actuator chamber. An air pulse escapes here after
each stroke. The port must not be obstructed.
This port can be used to connect a stroke counter.
Bleed port high pressure side “Z1” and “Z3”
Discharge of the leakage from the high pressure unit and ventilation of the piston
back chamber. A bleed pipe can be connected. It is possible to safely discharge
the operational leakage on the high pressure side via this line.
Bleed port air side “Z2“, “Z4“ and “Z6“
Discharge of the leakage from the drive unit. A bleed pipe can be connected. It is
possible to safely discharge the operational leakage on the drive side via this line.
“SFP” purge port
Port for purging the piston back chamber. The piston back chamber on the high
pressure side can be purged with the appropriate gas via this port. The purging
process must be carried out at very low pressure. The bleed lines must discharge
the purge gas at zero pressure.
Alternatively, in single-stage double-acting gas boosters, the piston back cham-
ber on the high pressure side can be filled with a suitable gas, for example to pre-
vent the leakage from reacting with the ambient air.
Ports for the control system of the second pneumatic/air drive unit “F1-F4“
Connections that allow to switch off the second drive unit. Only in combination
with the “Flexdrive” option.
3.6 Technical specifications
3.6.1 Operating conditions
Enviroment
Tab. 3-1 Enviroment conditions
Specification Value Unit
Temperature range -20...+60 °C
Installation area protected against
climatic exposure

Product description
0000000141 - 002 - EN 18
Operating fluids
Tab. 3-2 Operating fluids
The gas booster can be used with any operating fluids which do not chemically or
physically corrode the booster materials. The operating fluids should not pose
any danger to the personnel. The gas booster is not appropriate for use with un-
stable, ignitable or oxidising operating fluids. The materials used can be found on
the enclosed general drawing. Certain gas booster designs can be suitable for
other operating fluids. If you are unsure regarding the use of a special fluid,
please don't hesitate to contact Maximator.
Specification Value Unit
Operating temperaturea
a. Depending on the design of the gas booster. Refer to the general drawing provided or
rating plate
°C
Maximum mass concentration 5 (Class 6)b
b. according to ISO 8573-1
mg/m³
Particle size, max. 10 µm

Product description
19 0000000141 - 002 - EN
The most common operating fluids and gas booster designs are shown in the fol-
lowing table:
Tab. 3-3 Approved operating fluids
Compressed flu-
ids
(gases)
Formula
symbol
Gas booster
types
Special notes
Compressed air all models pB max. 100 bar
Compressed air DLE xxx-S pB max. 350 bar
Compressed air upon request
Sour/acid gasa
a. natural gas with amounts of hydrogen sulphide
DLE xxx-HMR
Argon Ar all models
Ethylene C2H4all models
Ethane C2H6all models
Propane C3H8all models
N-Butane C4H10 all models
Freon (F-12) CCL2F2DLE xxx-CR
Methane CH4all models
Carbon monoxide CO DLE xxx-C
Carbon dioxide CO2DLE xxx-C
Hydrogen H2DLE xxx-H2 Max. compression
ratio 1:4
Helium He all models
Nitrogen N2all models
Nitrous oxide N2O DLE xxx-S Max. compression
ratio 1:4
Oxygen O2DLE xxx-S Max. compression
ratio 1:4
Sulphur hexafluo-
ride
SF6DLE xxx-CR
Xenon Xe all models