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42
Troubleshooting
Symptom
MCH will not turn on
System will not operate,
but the touchscreen
display is on
Main power switch lights
up, but touchscreen
display is off and system
will not operate.
No circulation on main
water connections
No circulation on blanket
water connection
System water flow is
inadequate
CardioQuip Modular Cooler-Heater Operator/Service Manual
Possible Cause
Unplugged
No electric power at receptacle
Internal wiring continuity
Mains power switch (integral circuit
breaker) tripped
Faulty mains power switch
Faulty temperature control circuitry
Internal wiring continuity
Disconnected DC Power Supply, or
other loose internal wiring
Faulty DC Power Supply
Pump not activated
Internal Recirculation Valve set to
INTERNAL or OFF
Blockage in cold water tank
Blockage in external tubing
Pump wiring fault
Faulty pump or pump circuitry
No circulation on main water
connections
Disengaged quick-disconnect coupling Check coupling for complete connection.
Clogged quick-disconnect coupling or
tubing
Faulty quick disconnect coupler
Pump not primed
Blockage in cold water tank
Solution
Plug into a dedicated "hospital grade" 20A
receptacle.
Contact hospital maintenance personnel to
check electrical outlets and power source.
Have qualified service personnel inspect the
internal wiring for loose connections.
Reset the system's circuit breaker by turning
the mains power switch off. Wait 1 minute,
then turn the mains power switch on. If the
breaker immediately trips, have qualified
service personnel check for a direct short.
Contact CardioQuip Service.
Contact CardioQuip Service.
Have qualified service personnel check for an
open in the DC Power Supply input wiring.
Have qualified service personnel inspect the
internal wiring for disconnected plugs or loose
wire connections.
Contact CardioQuip Service.
Place system in RUN mode to activate the
pump.
Adjust Internal Recirculation Valve to
NORMAL position.
Clean mesh strainers at the bottom of the cold
water tank.
Inspect the external tubing for closed valves,
kinks, bends or other blockage.
Have qualified service personnel inspect the
internal wiring for loose connections.
Contact CardioQuip Service.
See "No circulation on main water
connections"
Partial coupling does not open the two-way
valve internal to the connector.
Remove external tubing, leaving the external
coupling connected. Using compressed air,
force the blockage out.
Contact CardioQuip Service.
Place system in PRIMING mode according to
operating instructions.
Clean mesh strainers at the bottom of the cold
water tank.
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