Correct Use; Information On Use In Damp Conditions; Manufacturer's Information; Packaging - GEM 4221 Installation, Operating And Maintenance Instructions

1.3

Correct use

The combi switchbox with integrated 3/2-way pilot valve is available as GEMÜ 4221
(for quarter turn actuators) and as GEMÜ 4222 (for linear actuators).
It has a microprocessor controlled intelligent position sensor as well as an analogue travel
sensor system (potentiometer) which is positively connected with the actuator spindle by
means of a mounting kit (spring, operating bush).
The valve end positions and the integrated travel sensor can be controlled via the electrical
connections.
The pneumatic valve actuator is directly activated by one or two integrated 3/2-way pilot
valves.
It is no longer necessary to mount an external pilot valve.
As well as the electrical position feedback and error analysis a visual signal is emitted by
LEDs that can be seen from above.
The GEMÜ 4221 / 4222 is suitable for use as defined in the data sheet.
In order to ensure correct product function, the following notes should be observed. Pay
attention to the information on the product labels.
Non-observance of these notes and the notes in the general installation, operating and
maintenance instructions will lead to a loss of the guarantee on the GEMÜ 4221 / 4222 and
of legal liability.
Only use the GEMÜ 4221 / 4222 as a combi switchbox in accordance with the data sheet.
Any other use or use above and beyond this is not permitted. GEMÜ shall not be liable for
any consequential damage which is solely at the user's risk.
Please pay attention to the pertinent technical safety regulations when planning both the
use and operation of the device. The designer, plant constructor or operator is always
responsible for positioning and mounting of the GEMÜ 4221 / 4222.
If the safety information is disregarded then persons, the environment and the GEMÜ 4221 /
4222 may be endangered. Furthermore, failure to observe the safety information may lead to
a complete loss of claims rights.
1.4

Information on use in damp conditions

The following information is intended to help when mounting and operating the GEMÜ combi
switchbox in damp conditions.
Lay cables and pipework so that condensate or rain water that remains on the pipework /
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cables cannot enter the cable glands of the GEMÜ 4221 / 4222.
Check that all cable gland and fittings are mechanically secured.
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Each time before closing check the housing seal for correct position and potential
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damage.
Close all covers immediately after use.
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2

Manufacturer's information

2.1

Packaging

The GEMÜ 4221 / 4222 is packed in a cardboard box which can be recycled as paper.
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4221, 4222