TM 10-7310-241-12&P   Change 1     2-13 2-9.  OPERATING PROCEDURES FOR MODEL RAK-15 (Continued) WATER SPILLAGE. Always ensure that the cover is properly closed and latched before operating the HWR or at any time that the host vehicle is mobile. Failure to secure the cover can result in the accidental spillage of heated water. CAUTION OVERHEATING. To avoid overheating, do not operate without water in the outer container. Overheating can result in the HWR becoming non-operational. (10)   Set the LO/OFF/HI switch (1) to HI and verify that the POWER ON lamp (2) and HEATER ON lamp (16) are both on. (11)   Water has been heated to the selected temperature when the HEATER ON lamp (16) goes off again. HEATED WATER.  When dispensing heated water, always use a suitable vessel and avoid contact with the tap spigot, which will be extremely hot. Failure to comply can result in serious burn injuries. HYGIENE WATER.  Always cool heated water by adding sufficient cold potable water before using for hygiene purposes. Heated water can cause serious burn injuries. (12)   Set the LO/OFF/HI switch (1) to OFF and dispense heated water as required by operating the pull-action tap (17).   NOTE If a continuous supply of heated water is needed, leave the LO/OFF/HI switch set to LO or Hl. The water will then be thermostatically maintained at the selected temperature for as long as required. (13)   If further heating of water is not required, set the LO/OFF/Hl switch (1) to OFF and verify that the POWER ON lamp (2) is off. (14)   Using the tap (17), drain-off any remaining water and dispose of in accordance with applicable instructions. WATER/FOOD CONTAMINATION (2).  Always ensure that the inner container and cover are clean before fitting them to the HWR. Dirt or other debris will result in the contamination of water or food. (15)   Install the inner container (13). (16)   Install the cover (8) as described in steps (8) and (9). WARNING WARNING WARNING