Medivance Arctic Sun 2000, Service Manual

Page: 41 / 85

37
Table 6. 3
General Troubleshooting Guide
Conditions / Symptom Observation Cause Solution
CTU connected.
Low water flow, low
pressure, or high PWM.
The pump can be heard.
No leak is found. Operate the
system as above. No flow is
indicated in User Diagnostic
Mode although some water
appears to be flowing. Flowmeter fault. Replace the Heater / Flowmeter
assembly.
Check the Circulating Pump
connection at the I/O Card.
Verify that the circuit card is
not wet. Pump connection fault. Reseat the connector. Allow the
card to dry, if necessary.
Swap the Circulating Pump
and Mixing pump connections
on the I/O Card. Attempt to
operate the system. Mixing
pump does not run. Pump electronics
failure. Replace the Circulating Pump.
CTU connected.
Low water flow, low
pressure, or high PWM.
The pump cannot be heard.
Pressure is more negative
than -8PSI for more than a
minute. Pressure sensor or
cable fault Replace the I/O Manifold
Assembly
Low water flow or air leaving
pads. Air leak in pads or
lines. See “Low Water Flow”
Low water flow and flow
through one pad is different
from other. Restriction in one pad
allows flow to
preferentially shunt
through other pad.
This causes significant
efficiency loss. Eliminate kinks in lines or replace
low flow pad.
Pads not adhered completely. Movement of pads
relative to patient.
Pads drying out
causing loss of
adhesion. Adhere or replace pads to assure
full contact.
Small pads used on large
patient Improper size selection
reduces surface area
available for transfer. Use largest pads that can fit on
patient. Assure pads are not
overlapped in back.
Poor water temperature
control, but flow appears to be
good. Main Tank is overfilled. Drain 0.5 liter water from the
upper drain port. Power up in
User Diagnostic Mode and check
the level. Repeat this process
until the level is less than 5.
Pads connected.
Poor temperature control of
patient
Poor water temperature
control, Main Tank is not full. Heater or chiller circuit
fault. See "Water does not heat" or
"Water does not cool"
Pads connected.
Water does not heat to
target temperature in
Manual Mode.
Flow rate less than 800
ml/min. Heater does not
provide full power at
low flow rates. See Low Water Flow.
CTU connected.
Water does not heat to
target temperature in
Manual Mode.
Power up in User Diagnostic
Mode. Enter Manual Mode
with a water target of 42°C.
After stabilizing for several
minutes, note whether the
display indicates any rise in
the water temperature T2.
Water does not warm at all. Heater fuse is open,
caused by fault in
heater circuit. Replace fuse and Heater /
Flowmeter assembly.