Table of Contents
Advertisement
Page
38
High Temperature Alarm
WARNING: If the unit is in an overtemp condition and the emergency cool system
!
is used, it is critical that the operator monitor the output water temperature.
If the output water temperature exceeds 42.5°C, the MCH will enter overtemp mode. The system
pump will stop, the OVERTEMP screen will appear, and an audible alarm will sound. The
operator should perform the following procedure to restore normal operation:
1. Touch the Silence Alarm button. The audible alarm will silence for approximately 60
seconds. This allows the operator to clear the overtemp condition without the distraction of
an audible signal.
2. Touch and hold the cold water control button. The system will change to Low pump speed
and into cool mode (water flow into ice tank), allowing cool water to flow into the system at
a slow rate. The overtemp condition will clear when the water temperature decreases below
42°C.
3. Once the STANDBY screen appears, the operator can then check the temperature and pump
settings, and touch the "Run" button to return to normal operation.
A Note About Flow
The main water pump used in the MCH is capable of delivering up to 60 liters per minute (LPM)
of unrestricted flow at a maximum pressure of approximately 12 psi; however, the actual flow
rate is ultimately determined by the combined restrictions of internal plumbing and external
hoses, heat exchangers, patient blankets, etc. The internal restrictions of the MCH allow a typical
maximum flow of approximately 20 LPM. Various configurations of hoses and heat exchangers
will exhibit different flow rates. For example, when connected to a Medtronic MYOtherm™ or
BIOtherm™ heat exchanger with the standard hose set, the typical range of flow is from 5 LPM
at the lowest pump speed to 12 LPM at the highest pump speed.
CardioQuip Modular Cooler-Heater Operator/Service Manual
Hide quick links:
Advertisement
Table of Contents
