To Next PageTo Next PageWhy is the coolant valve symbol flashing on my vacuubrand Water Pump?
If the warning triangle and coolant valve symbol are flashing with four blips on your vacuubrand Water Pump, the coolant valve may be removed or defective. Check the connection cable of the valve, use a new valve, or reconfigure without the valve.
Why doesn't my VACUUBRAND Laboratory Equipment pump achieve ultimate vacuum?
If your VACUUBRAND pump isn't reaching its ultimate vacuum or usual pumping speed, check the centring ring at the small flange connection for correct positioning and inspect the pipeline and vacuum system for leaks. Ensure the controller setting is correct by selecting the ''Pump down'' function with the speed set to ''HI''. Use vacuum lines with a larger diameter and keep them as short as possible. If the pump has been exposed to condensate, allow it to run for a few minutes with atmospheric pressure at the inlet to purge. Clean and inspect the pump heads for deposits. Replace diaphragms and/or valves if they are damaged. Check process parameters for outgassing substances or vapor generation.
What to do if VACUUBRAND Laboratory Equipment pump does not start?
If your VACUUBRAND Laboratory Equipment pump doesn't start or stops immediately, and the warning triangle and pump symbol are flashing, it might be due to a few reasons. If the pump has been exposed to condensate, allow it to run for a few minutes at maximum speed with atmospheric pressure at the inlet. Check for overpressure in the outlet line by removing any blockage or opening the valve. If the motor is overloaded, allow it to cool down, identify, and eliminate the cause of failure, then manually reset it by switching off the pump or unplugging it.
Why does the display disappear on my VACUUBRAND Laboratory Equipment?
If the display on your VACUUBRAND Laboratory Equipment disappears, check the current draw of the connected devices to ensure there isn't too much load. Inspect connected valves for short circuits and replace them if necessary. Also, check the RS 232 plug and cable for any short circuits.
What causes incorrect pressure readings in VACUUBRAND Laboratory Equipment?
If the pressure reading on your VACUUBRAND Laboratory Equipment is incorrect, readjust the CVC 3000. If there's humidity in the measurement chamber, let the pressure transducer dry by pumping and readjust if necessary, also determine and eliminate the cause for humidity. If the pressure transducer is contaminated, refer to the section on cleaning the pressure transducer.
What to do if vacuubrand Water Pump stops and arrow down is flashing?
If your vacuubrand Water Pump stops during "Pump down" mode and the "arrow down" is flashing, it indicates that the pressure is below the preset minimum. Confirm by pressing the START/STOP key and adjust the minimum pressure value if necessary.
Why is the digital pressure reading flashing on my vacuubrand Water Pump?
If the digital pressure reading is flashing and the display shows "0.0" on your vacuubrand Water Pump, the pressure transducer may not be correctly adjusted under vacuum. Adjust the CVC 3000 correctly.
What to do if vacuubrand Water Pump stops and arrow up is flashing?
If your vacuubrand Water Pump stops during "Vac control" mode and the "arrow up" is flashing, it means the preset maximum pressure has been exceeded. Confirm by pressing the START/STOP key and adjust the maximum pressure value if necessary.
How to fix no display on vacuubrand Water Pump?
If there is no display on your vacuubrand Water Pump, consider the following: * Check if the mains plug is properly connected to the NT VARIO / VARIO-B pump and plug it in. * Ensure that the controller CVC 3000 or pump NT VARIO / VARIO-B is switched on. * Verify the VACUU • BUS cable is correctly plugged into the controller CVC 3000.
What to do if VACUUBRAND Laboratory Equipment venting valve does not respond?
If the venting valve does not respond and the valve symbol is displayed on your VACUUBRAND Laboratory Equipment, the venting valve might be contaminated. Clean the valve.
General| Model | ME 4C NT VARIO |
|---|---|
| Category | Laboratory Equipment |
| Number of Stages | 2 |
| Max. back pressure (absolute) | 1.1 bar |
| Motor Power | 0.75 kW |
| Voltage | 230 V |
| Noise Level | 52 dB(A) |
| Noise level at 50 Hz | 52 dB(A) |
| Weight | 17.2 kg |
| Oil Capacity | 0.5 L |
| Cooling water consumption at 15 °C | Not applicable |
| Degree of protection | IP 20 |
| Type | Rotary vane vacuum pump |
| Pumping Speed | 4.0 m³/h |
| Max. pumping speed | 4.0 m³/h |
| Ultimate vacuum (absolute) | 2 x 10⁻³ mbar |
| Frequency | 50 Hz |
Covers safety, technical specifications, and operational procedures for Part I.
Crucial guidelines and warnings for safe manual usage.
Provides general setup, handling, and the designated purpose of the equipment.
Step-by-step instructions for correctly installing the vacuum system.
Specifies environmental requirements and conditions for safe operation.
Outlines critical safety measures and precautions during the use of the pump.
Guidelines for routine maintenance, cleaning, and repair procedures.
Explains ATEX markings and their implications for operation.
Lists overall specifications for pumps and pumping units.
Details permissible gas inlet temperature ranges for various operations.
Instructions for connecting the pump into a vacuum system.
Operational guidelines, temperature limits, and pressure considerations.
Important considerations and precautions when using the gas ballast function.
Guidelines for operating and maintaining the exhaust waste vapor condenser.
Procedures for safely shutting down and storing the equipment.
Description of controller buttons, selection knob, and communication interface.
Explanation of the controller's display elements and operational symbols.
Details on setting up and using the pump down operation mode.
Instructions for controlling vacuum to a preset level.
Explanation of automatic boiling point detection and adjustment.
Guide to defining, storing, and executing custom programs.
Information on optimizing vacuum control for networks.
Settings for parameters like adjustment, interface, display, and autostart.
Covers advanced settings, accessories, and maintenance for Part II.
Procedure for adjusting the controller at atmospheric pressure.
Steps for calibrating the controller under vacuum conditions.
Information on factory calibration services and standards.
Details on connecting various accessories to NT VARIO pumps.
Options for connecting accessories to PC 300x VARIO pumps.
Information on converting valve connections.
Overview of VACUU•LAN modules for vacuum networks.
List of available spare parts for the equipment.
Solutions for problems related to the device display.
Guidance for addressing incorrect pressure readings.
Interpretation and resolution of warning lights and symbols.
Troubleshooting for unresponsive controls or system errors.
Diagnosing and resolving problems with pump speed, vacuum, noise, or seizure.
Procedure for cleaning pump heads on specific models.
Step-by-step guide for diaphragm replacement.
Detailed instructions for valve replacement.
Method for verifying the pump's ultimate vacuum performance.
Guidance on correctly connecting hoses and fittings.
Verifying pump performance after reassembly.
Procedures and requirements for sending equipment back for service.
