MIL-HDBK-740
SECTION IV - HAND DISHWASHING PROCEDURES
(Hand dishwashing should be used only when the dishwashing machines are not available or not operating properly.)
A. Operations.- The detergents used for hand d dishwashing must be much milder than those used for machine dishwashing because operator's hands are immersed in the detergent solution. MACHINE WASHING COMPOUNDS SHOULD
NEVER BE USED FOR HAND DISHWASHING OERATIONS.
They are strongly alkali
and may cause skin irritations. The hand dishwashing compounds are generally high sudsing products. Sudsing is desirable in hand dishwashing but would interfere with the washing action in dishwashing machines. The washing temperature for hand dishwashing is much lower than that for machine dish- washing. The maximum temperature that can be endured by humans over an extended period is about l20°F. Proper scrapping and preflushing as pre- viouslylyy described in machine dishwashing procedures are also important preliminary steps in hand dishwashing. Dishwashing Compound, Hand, FSN
7930-281-4731 (50 lb. sack), should be used for hand dishwashing operations. The proper and improper hand dishwashing operations are shown in Figures 33 through 40. The arrangement recommended for hand washing serving utensils and tableware items consists of three sinks, one warm wash (120°F to 125°F), one warm rinse (120°F to 140°F), and one hot sanitizing (180°F). Immersicn in the third sink using wire baskets will be for 30 seconds at 180°F., with
a thermometer indicator and booster heater provided. An alternative method
is two sinks, one warm wash (120°F to 125°F) and one warm rinse (120°F to 140°F)
followed by a final rinse in a fixed nozzle spray rinse cabinet (not shown in
Figure 34) delivering 10 gallons per minute of 180°F rinse water at the
manifold for 5 seconds or 5 gallons per minute for 10 seconds.
Figure 33 -Proper Hand Dishwashing Operation
51
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business