Tyco Healthcare KENDALL 6060 Novamedix A-V Impulse System, Руководство по обслуживанию

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2.5 PREVENTATIVE MAINTENANCE
To maintain optimum functional performance and electrical safety it is
recommended that after one year’s operation, and then every year, the controller be
removed from use and checked.
Carry out all of the procedures contained in Sections 2.5.1 through 2.5.8 inclusive,
referring to the recommended service schedule throughout.
When a controller is opened for service or repair, remove accumulated dust from
inside the case halves, especially around the fan blades and fan housing area.
2.5.1 Labeling
Examine the labels on the controller and ensure they are legible and intact.
If any of the information on a label cannot easily be read, the label should
be replaced.
2.5.2 Power Cord
Examine the power cord assembly and replace the power cord if there are any
signs of damage (see Section 4.16).
As a quick check use a digital ground tester, and check that the resistance
between the ground pin on the
power cord , and the power cord retainer screw
is 0.2 ohms or less.
If this value is greater than 0.2 ohms, remove the power cord and test the
power cord separately.
If the resistance of the power cord is greater than 0.1 ohms, then it should be
replaced.
If the resistance of the power cord is less than 0.1 ohms, measure the
resistance between the ground pin of the controller
power inlet , and the
ground test screw. If the value of this resistance is greater than 0.1 ohms, the
controller should be returned to the Kendall Service Center for repair.
Connect the controller, via the power cord, to an Electrical Safety Analyzer
and confirm the ground resistance and leakage current (see Sections 2.2.11
and 2.2.12). If the test values exceed these limits the controller should be
returned to the Kendall for repair.
Ensure that the power cord retainer screw is securely fastened for this test.
2.5.3 Cooling Fan
Check that the cooling fan is running smoothly and there is no vibration or
other noise that might indicate the fan is damaged or obstructed. If the
cooling fan is not operating at normal speed and efficiency, open the case to
inspect it more closely. Beware of metal parts at higher than line voltage.
For greater access to the fan, the power supply assembly should be removed
(see Section 4.15).
Use a vacuum cleaner or low pressure air to remove dust or debris from the
cooling fan and grill.
Refit the power supply.