Huntleigh AlphaBed, Руководство по обслуживанию

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2 Electrical Testing
To test and calibrate the pump unit correctly, the following equipment is required:
Electrical Safety Checks – Class ll
There are several electrical safety checks that must be carried out after breakdown repairs, rental
re-checks and servicing. Where alternatives are given, the test will depend upon the available
equipment. The tests are as follows:
•
Insulation Resistance Test (Megger Test) or
•
Dielectric Strength (Flash Test)
Insulation Resistance Test
This test checks the integrity of the appliance’s insulation.
For all appliances, this test is applied between the connected Live and Neutral wires and the
appliance’s metal compressor assembly box.
Specification : 500 Vdc is applied to the insulation and the measured resistance must be greater
than 2 M W . This test can be conducted by using a Portable Appliance Tester. Also check the
continuity of the mains cable.
Dielectric Strength Test (Flash Test)
This test shows the response of the insulation to high ac-voltage stress, to the effects of the
capacitive current and gives an early warning of any electrical problems developing in the appliance.
Leakage Circuit Test (USA)
Measure the risk currents in accordance with the ANSI-AAMI ESI-1993 Standard (American National
Standard Safe Current Limits for Electromedical Apparatus) or as specified in UL 2601-1.
Issue 2 Chap 5
Nov 2001 SER0004 Page 5
Mini Pump Service Manual Testing
Equipment
Insulation resistance tester (Megger) 500 Vdc
Portable appliance tester
Multimeter/Continuity tester
Dielectric strength tester (Flash tester) 3.0 kVac with current limit
Table 35 - Electrical Test Equipment
Pump Pressure X Pressure Y
AlphaBed
AlphaCare
Alpha Trancell
Alpha Relief
Aura
AlphaXcell 5 mmHg
5 mmHg
5 mmHg
5 mmHg
50 mmHg
5 mmHg
17 mmHg
17 mmHg
17 mmHg
17 mmHg
82 mmHg
17 mmHg
Table 34 - Descending and Ascending Pressures