Cardioplegia Hose Connectors; Internal Recirculation Valve - CardioQuip MCH-1000 Operators & Service Manual

Cardioplegia Hose Connectors

The MCH-1000(i), if equipped with the optional
C a r d i o p l e g i a S h a r e d C h a n n e l ( C S C ) M o d u l e
(MCH-10CSC), features a second set of hose connectors
that are identical to the main hose connectors. Maximum
water flow at the cardioplegia connectors is approximately
8 liters/minute (2 gal/min) with open hoses (unrestricted
flow). Actual water flow when connected to a heat
exchanger will vary, depending on the flow characteristics
of the heat exchanger being used. Water is routed directly
from the pump to the OUT connector and recirculated
into the system at the IN connector. Water flow is
controlled by the CPG controls on the touchscreen. These
connectors are oriented horizontally on the side of the
MCH-1000(i).

Internal Recirculation Valve

The internal recirculation valve is located on the rear panel
of the MCH-1000(i), and allows the operator to stop water
flow through external hoses, recirculating the water
internally within the MCH. This may be useful for initial
system priming (before hoses are connected), or
preheating/precooling water during a procedure. Under
normal operation, the valve should remain in the NORMAL
position. To disable water flow through the Main & Blanket
hoses and enable internal recirculation, turn the valve to
the INTERNAL position. To disable water flow completely,
turn the valve to the OFF position. This does not affect
cold CPG.
WARNING: Do not operate the MCH with the valve in the OFF position.
Leaving the valve in the OFF position, or in NORMAL without hoses connected, while
the MCH is running will cause a temperature-related alarm, and may damage the
system.
CONNECTORS, VALVES, & HOSES | Cardioplegia Hose Connectors
Cardioplegia Shared Channel Module
MCH-10CSC
Internal Recirculation Valve set to
"NORMAL"
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