Huntleigh Flowtron DVT, Service Manual

Page: 27 / 37

5.14 Test Instructions and Specifications
After completing any repair work or servicing of the equipment, the following
tests – extracted from ITP 349 – shall be performed.
5.14.1 Electrical Safety Checks
5.14.1.1 Earth bond test
Check the integrity of the bond between the ground pin on the cord plug, and
grounded dead metal parts in the pump.
Use the multimeter – or the portable appliance tester – to measure the bond
resistance which should be no more than 0.2 W .
5.14.1.2 Leakage current test
Measure the risk currents in accordance with the AAMI American National
Standard ‘Safe Current Limits for Electromedical Apparatus’ or as specified in
UL 544 or 2601-1.
5.15 Calibration Equipment Required
To test and calibrate the pump unit correctly, the following equipment is
required:
q
A sphygmomanometer or pressure gauge (0-160 mmHg)
q
A flowmeter (0-10 liter/min)
5.15.1 Pressure, Flow and Calibration Checks
5.15.1.1 Pressure check
Attach the pressure gauge/sphygmomanometer tube to the top outlet port and
use the fingers, or suitable plugs, to close the other two outlets. Pressure range
should be:
20 mmHg on minimum setting
60 mmHg on maximum setting
F048 5-9 Issue 3
Mar 2003
WARNING
Danger of electric shock. During the following tests live terminals and
conductors will be exposed.