Quarterly Maintenance Procedure - CardioQuip MCH-1000 Operators & Service Manual

Quarterly Maintenance Procedure

The Quarterly Maintenance procedure is a reprocessing cycle which cleans and disinfects the
external surfaces and water path of the unit. To ensure proper operation of the MCH,
perform the Initial Operation Check at least quarterly. Additionally, ensure all accessories
and modules are reprocessed at the same time as the MCH unit. The TEC Module
Maintenance and Refrigeration Module Maintenance sections must be referenced for
reprocessing their respective modules. Follow the procedure below:
CAUTION: Do not operate the MCH with less than 4 inches of sterile or 0.22-
micron filtered water in the water tank. Dry operation will cause equipment
damage.
CAUTION: Use only CardioQuip approved cleaners and disinfectants. Operation
with unapproved agents may cause equipment damage.
1. Attach the hoses with a loopback connector (or set the recirculation valve to INTERNAL,
if so equipped) and put approximately six inches of sterile or 0.22-micron filtered water
in the water tank.
2. With the front panel mains power switch turned off, plug the power connector into a
dedicated "hospital grade" AC power outlet. The outlet should match the voltage,
frequency and capacity listed on the MCH nameplate.
3. Turn on the mains power switch for the MCH. Ensure that the unit runs through a
successful system test.
4. Touch the
Prime
full speed, and the valve should switch from COOLING to RECIRC approximately every
ten seconds (check for ten-second bursts of water flow in the water tank).
5. After priming, ensure the water level in the water tank does not drop below four inches
by adding sterile or 0.22-micron filtered water as necessary.
6. Add the selected cleaning chemical to the water tank at the manufacturer's
recommended rates (see chart above for recommendations). Once primed, and with six
inches of water in the tank, the MCH-1000(i) contains approximately three gallons (12
liters) of water, and the MCH-1000(m) contains approximately 1 gallon (4 liters) of water.
7. Run the MCH through five (5) standard priming cycles, or one extended priming cycle, to
fully mix and circulate the cleaning chemical (10 minutes total). At some point during
this step, set the recirculation valve (if so equipped) to INTERNAL for at least 10-15
seconds, to ensure that disinfectant reaches all sections of the internal plumbing.
8. Scrub the water tank and outlet screens with a nylon brush. It is imperative that the
tank and screens be thoroughly cleaned to ensure disinfection. The screens may be
unscrewed and removed to assist in cleaning. Be sure to replace the screens before
operating the MCH.
9. Open the system and tank drain valves and drain the unit completely. With the drain
valves open, flush the unit with sterile or 0.22-micron filtered water.
10. Close the drain valves and fill the water tank to maximum level with sterile or 0.22-
micron filtered water. Run the MCH through a priming cycle to flush residual cleaning
chemical from the system.
50 MAINTENANCE | Quarterly Maintenance Procedure
button to initiate the priming sequence. The pump should turn on at