Operating Instructions – Labmaster
©
130 and MB20G Systems
Instruction Manual
Chapter 10: Maintenance & Troubleshooting
© MBraun, Inc. Edition 1/2007 Page 10-13
Power Supply
The Main Power switch on the front of the system is set to the On position but the system is not
functioning.
Is the system plugged into the main power
supply?
Yes – proceed to next step
No – Turn the main power switch to the Off
position and plug the system in. Turn the
switch to the On position and resume normal
operation. Proceed to next step if this does
not fix the problem.
Open the electrical cabinet located inside the
system. Check main power breakers F1.
Reset the blown breaker.
Did this correct the problem?
Yes – continue normal operation
No – contact M.Braun Service Department.
If a breaker that has been reset blows again, contact the M.Braun
Service Department.
Purifier Inlet/Outlet Not Open
One or both of the valves controlling circulation flow to and from the purifier bed fails to open.
Possible reasons for failure are:
• The gas pressure required to open the valve is too low;
• The gas supply tanks are empty.
Reset the regulator on the gas supply to 80psi.
Did the valve open?
Yes – continue normal operation
No – contact the M.Braun Service Department.
Vacuum Pump VPG1: Motor Protective Switch Activated
The vacuum pump controlling antechamber evacuation is drawing too much current. Possible
reasons for failure are:
• Debris in the vacuum pump;
• Vacuum pump oil is low or degraded;
• Vacuum pump is defective.
Check the vacuum pump oil level using the sight
glass. Top off the oil level as needed.
Did this fix the problem?
Yes – continue normal operation
No – proceed to the next step.
Check the vacuum pump oil color using the sight
glass, it should be clear. Change the oil in the
vacuum pump.
Did this fix the problem?
Yes – continue normal operation
No – proceed to the next step.
Open the electrical cabinet and check the F4
breaker. Reset it if it is blown.
Did this fix the problem?
Yes – continue normal operation
No – contact the M.Braun Service Department.
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