040-563
2018-10
Operating Manual
Model/Series:
Number:
GB
Version:
Rev. D
Page 4 of 16
©
DEUBLIN
for air and hydraulic
with elastomeric seals
1.1.1 Application cylinder (Duo)
The following application is one example from a variety of applications.
This example shows how the cylinder is supplied with hydraulic oil or compressed air as medium.
Fig. 1: Schematic diagram showing the power transmission to the cylinder
The hydraulic oil moves the piston of the cylinder. The mating connections of the rotating union are
thereby used in pairs.
❑
In order to extend the piston, the hydraulic oil is supplied through connection P1 of the rotating
union in front of the piston. P2 is un-pressurised.
❑
In order to retract the piston, the hydraulic oil is supplied through connection P2 of the rotating
union behind the piston. P1 is un-pressurised.
Depending on the complexity of each application, the corresponding series with the required number
of connections and channels can be used.
1.2
Misuse
This chapter provides information on known misuse of rotating unions of the 17/21, 2117, 1690/1790/1890,
1379/1479, 2300, D and MPSS-000037 series.
The rotating unions are not suitable for the areas and applications described herein. Use in such ar-
eas or for such applications constitutes a misuse endangering people and machines and is therefore
prohibited. Always observe the operating data released by
DEUBLIN
on the model-specific drawing. It
can be requested from
DEUBLIN
.
Prohibition for the following areas:
❑
Potentially explosive areas
The rotating unions of the 17/21, 2117, 1690/1790/1890, 1379/1479, 2300, D and MPSS-000037
series shall not be used in potentially explosive areas, as they are not approved for the require-
ments in potentially explosive areas. Operation in such areas may cause explosions.
❑
Outdoor operation
Inadequate protection against weather conditions can result in premature failure.
Prohibition for the following applications:
❑
Conveying of combustible media or hydrocarbons
Combustible media or hydrocarbons may ignite or cause explosions.
Exception:
Thermal oil within the admissible temperature range. Please observe the safety
data sheet of the used thermal oil.
❑
Food
Food, cleaning and disinfectant residues cannot be removed from the rotating unions. People
may suffer poisoning.
P1
P2
