Safety Notes
VTK-TR-BA-072e-1 - User Manual MDS 358X Series
2.4 Specification and Technical Notes
• The system is designed for interior use only. Maximum altitude: 2000 m.
• The relative air humidity shall not surpass 80 % rH at 31 °C or 50 % rH at 50 °C (with a linear
decline).
• Temperature: 10 °C till 50 °C
• Admissible mains voltage fluctuations: Within the range of ± 10 % of rated voltage.
• Transient overvoltage tolerated acc. to IEC 60364-4-443, max. degree of soiling: 2
• Mains cables must feature a protective conductor. In the case of cables not delivered by
Vermes Microdispensing, the guarantee for the MDS is valid only up from the interface.
• Power outlets must comply with common safety prescriptions.
• During the application, you must guarantee sufficient air circulation. For further details, refer
to Installation chapter (see paragraph 6.3.1 "Installation of the Control Unit", page 49).
For exact dispensing results, the temperature of the actuator system should stay below 80 °C
and the temperature at the outside of the valve body should stay below 39 °C. Therefore, you
might need cooling. Cooling is achieved by compressed air, free of fine particles, dust, oil and
condensate, quality classes 1, 4, 2 acc. to DIN/ISO 8573-1:2010.
- Solid particles: Quality class 1
max. number of particles/m³: 0.1 – 0.5 µm: < 20000, 0.5 – 1 µm: < 400, 1 – 5 µm: < 10
- Water content: Quality class 4
max. pressure dew point +3 °C
- Residual oil: Quality class 2
0.1 mg/m³ max.
2.5 Warnings
• Handle the mains cables correctly: Always seize the cable at the plug. Never touch it with wet
hands.
• Under no circumstances connect a schuko-plug (type F, CEE 7/4) with a socket build for an
unearthed plug (type C, CEE 7/17). The system would not be grounded.
• The cable should never be squeezed or kinked. Never place the instrumentation (or any other
object) on the cable.
• Damaged cables may give rise to fire and danger caused by electricity. Inspect them visually
in regular intervals. You should exchange damaged parts at once.
• In the case of a major disturbance, disconnect the equipment immediately from the mains.
• Spare parts not delivered or recommended by the manufacturer could affect the inherent
safety of the system. The same problem arises, if the customer attempts to process
substances not admitted for the dispensing system.
• Unqualified repair work often causes major damages, sometimes even personal injuries.
Therefore, repair is reserved to our Technical Support and authorized subcontractors.
• Before removing the actuator and sensor cable, the system must be switched OFF.
• For longer interruptions, switch OFF the control unit.
• Before disconnecting the control unit from the mains, switch it OFF.
• Repeatedly switching ON and OFF the equipment may reduce the lifetime of the power unit.
• Before charging the fluid system with an aggressive, reactive or toxic substance, you have to
verify that it is compatible with all of the contacting components inside the system.
• The supply pressure at the cartridge or in the pressure tank of 7 bar resp. 100 bar (according
to the system configuration) should never be exceeded.
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