Zeiss EVO, Instruction Manual, Page: 126 / 180

7 Troubleshooting | 7.2 Column ZEISS
7.2.2.1.3 Disassembling the Gun
You need to disassemble the gun so that you can dismount the filament holder and replace the
filament.
WARNING
Malfunction of medical devices near ion getter pumps
Magnetic fields present at the ion getter pumps may disturb the function of medical devices.
The magnetic fields are also present if the microscope is switched off.
If you wear medical implants that are susceptible to magnetic fields (e.g. cardiac pacemakers),
do the following:
4
Keep a distance of at least 30 cm from the ion getter pumps.
4
Follow the safety instructions provided by the pump manufacturer.
CAUTION
Hot firing unit
During operation, the firing unit gets hot. If you touch the hot firing unit, you may burn your-
self.
4
After you switch off the microscope, wait for 15 minutes before you touch any parts of
the firing unit.
WARNING
Risk of electrical shock
If you open the gun while the mains power is connected to the microscope, then contact may
cause electrical shock.
4
Always disconnected the mains power from the microscope before you open the gun.
Parts and Tools

Lint-free gloves

Hex key, 1.5 mm
Prerequisite ü The system is completely vented.
ü
The microscope is powered down.
Procedure 1. Remove the top cover.
2. Wait at least fifteen minutes for the firing unit to cool down.
126 Instruction Manual ZEISS EVO | en-US | Rev. 10 | 354706-0780-006