Operating instructions

Marquette Hellige GmbH CardioSys / MicroLab V4.X Page 83
Servicing Instructions 227 436 37 Rev. B V1.3
9 Care and maintenance
9.1 Technical inspections
Technical inspections are to performed once a year. The following items, including the
accessories used, are to be performed:
- Check device and accessories for mechanical defects which impair their function.
- Check labels and inscriptions on the device relating to safety are clearly legible.
- Perform a function check
- Measure the resistance of the non-fused earth conductor as per measuring circuit
from VDE 0751:1990
- Measure the device leakage current as per measuring circuit from VDE 0751:1990
- Measure the patient leakage current as per measuring circuit from VDE 0751:1990
Warning!
The following checks may only be performed by persons whose training, knowledge and
practical experience enable them to carry out such checks reliably and correctly.
Notes:
The operational and functional reliability of the device is checked using the following
checklists.
They serve the experienced technician when checking the device.
A knowledge of device operation as detailed in the “User’s Manual” is assumed.
The checklist items are based on the testing instruments given below.
The tests should be carried out using the customer’s accessories, so that defective
accessories are also detected automatically.
If other testing instruments are used besides those mentioned, the items on the check
list and tolerance specifications may need to be modified.
9.1.1 Visual check
Device and accessories are to be checked to ensure that
- fuse cartridges comply with vendor’s specifications;
- labels and inscriptions on the device relating to safety are clearly legible;
- the mechanical state of the device permits its further use;
- there is no fouling which could cause any reduction in safety.