CEM MARS 6 User Manual

91
Repair and Service
WARNING
This instrument utilizes high voltages and microwave radiation in its operation. Instrument service and
repair should be undertaken only by technicians trained in repair and maintenance of high voltage and
microwave power systems.
The MARS 6 is constructed in modular form to facilitate troubleshooting and repair. It is recommended that
troubleshooting and repair by the user be limited to identifying and replacing parts such as printed circuit boards, fans,
lamps or motors.
WARNING
Disconnect the instrument from the AC power source prior to performing any service procedure.
Prior to any troubleshooting or service procedures in the high voltage section or area, bridge the contacts of the high
voltage capacitors using the metal shaft of a well-insulated screwdriver to discharge the residual voltage in the capacitors.
This will prevent exposure to high voltage discharge during troubleshooting or service.
Before replacing the high voltage plate assembly after any service procedure involving the microwave generating
components, visually check the magnetrons, transformers, triac, and high voltage capacitor to ensure that the electrical
connections are secure.
Any service to or inspection of the MARS 6 which requires
Removal of the high voltage plate assembly or
Replacement of components in the
door,
interlock mechanism,
microwave generation system, or
microwave transmission system
should be followed by a microwave leakage measurement to verify that leakage is less than 5 mW/cm2.

CEM MARS 6 Specifications

General

Type	Microwave Digestion System
Power Output	1600 W
Temperature Control	Yes
Pressure Control	Yes
Vessel Capacity	up to 40 vessels
Display	Touchscreen
Operating Pressure	up to 800 psi
Temperature Range	up to 300°C
Temperature Accuracy	± 1 °C
Power Supply	220-240 V, 50/60 Hz
Safety Features	Over-temperature and over-pressure protection
Power Consumption	1600W
Cooling Rate	Forced air cooling