Cocoon CWS 4000 - Performance Inspection

Care Essentials CWS4000 Cocoon Warming System Service Manual
4.3. Performance Inspection
Care Essentials recommend that the CWS4000 receive at least an annual performance
inspection to verify CWS4000 functions. The CWS4000 does not require adjustment or
calibration.
Items Required:
e CWS4000 Operator & Service Manuals.
» Digital Thermometer.
STEP PROCEDURE
1 If you have not already done so, read the CWS4000 Operator and Service Manuals.
2 e Place the CWS4000 on a firm, level surface.
e Do not connect the delivery hose to a warming blanket.
e Connect the CWS4000 to mains power.
3 Familiarise yourself with the operation of the CWS4000 by operating the CWS4000 with reference to
the CWS4000 Operator and Service Manuals.
4 The temperature control system is verified as follows:
e Ensure the delivery hose cover is undamaged and that it covers the entire hose.
e Ensure that the environmental conditions are 20°C to 22°C, 30% to 70% relative humidity, non-
condensing.
e Place the digital thermometer sensor in the centre of the delivery hose outlet as shown in
Figure 6.
« Check that the temperature of delivered air stabilises within five (5) minutes following a change in
set temperature.
e Check that the temperature of delivered air corresponds with the set temperature to within +2°C.
e Note that some variation between the set temperature and temperature of delivered air is
possible because of heat loss that occurs in the delivery hose. The magnitude of the heat loss
will depend on the ambient temperature and the degree to which the hose is longitudinally
compressed or extended.
Temperature Sensor
Figure 6 Delivery hose outlet showing temperature sensor position
Revision | 13 June 2006 Page 9