Maintenance; Water Quality; Cleaners & Disinfectants - CardioQuip MCH-1000 Operators & Service Manual

MAINTENANCE

Deviation from maintenance procedures may result in increased patient risk.

Water Quality

The water in a cooler-heater can harbor various microorganisms commonly found in the
hospital environment, some of which can pose health risks for immunocompromised
individuals. The only effective way to control these risks is to closely monitor the water quality
in the cooler-heater, use only sterile or 0.22-micron filtered water, and treat it like any other
biohazardous material. For example, gloves used when connecting the water hoses should be
discarded before handling other parts of the perfusion circuit, and towels used for absorbing
water spills should be treated as contaminated.
Cleaners & Disinfectants
Chemical solvents (MEK, acetone, alcohol, etc.), strong acids or bases, and coarse abrasives
should never be used as these may damage polymer face plates, control panels, connectors,
etc. Do not allow any anesthetics to spill on any part of the system or spare parts. Chemicals
such as Forane (Isofluorane) can be very damaging. When using chemical cleaners or
disinfectants, do not mix at stronger concentrations than recommended by the manufacturer,
and do not combine chemicals. All chemical mixtures must be diluted with sterile or 0.22-
micron filtered water to maintain proper water quality. If chlorine bleach is used for
disinfection, in order to avoid equipment damage, the diluted concentration must be less than
50 ppm during cleaning and disinfection, and residual chlorine levels must be less than 2
ppm. Suggested chemicals and concentrations for use in cleaning and disinfecting the MCH
are listed in the table below:
Disinfectant/Cleaner
Pine Sol™ (glycolic acid, ethoxylated alcohols)
Chlorine Bleach (NaClO), 5%
Hydrogen Peroxide (H
Minncare™ HD Cold Sterilant
(peracetic acid, H
BruTab 6S Sanitizer Tablets
®
(NaDCC), 6.55g tablet
Liquid Dezcal™ scale remover (sulfamic acid)
Dilution in Sterile or 0.22-micron
for Disinfection/Cleaning
O ), 35%
2 2
1.25 oz/gal (10 mL/L)
O )
2 2
13 oz/gal (100 mL/L)
Filtered Water
0.4 oz/gal (3 mL/L)
0.13 oz/gal (1 mL/L)
4 oz/gal (30 mL/L)
1 tablet/gal (4 L)
Acceptable
Residual
0.1 oz/gal (1 mL/L)
≤ 2 ppm
≤ 2 ppm
≤ 10 ppm
⅛ tablet/gal (4 L)
0.1 oz/gal (1 mL/L)
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