| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-219-14-1
1-79.
HEATING, VENTILATING AND AIR CONDITIONING SYSTEM (HVAC) (Cont)
j. The Dryer is installed in the main liquid line or in a bypass. It is a cylinder containing renewable cartridges
filled with activated alumina or silica gel. The dryer is used to keep the system free of moisture.
k. The Dryer continues working at all times after it has been installed in the main liquid line when installed in a
bypass, it is used when charging refrigerant or for freeing the system of moisture. If the system is properly purged and
dehydrated when first installed, and operated carefully, the dryer will only be used when drying.
l. Some Dryers come with a "dry-eye" or moisture indicator. It consists of a paper disc visible through a sight
glass. The paper disc changes in color from blue to pink. A blue color indicates there is an acceptable level of moisture
in the refrigerant. A pink color indicates too much moisture and the cartridges should be replaced with dryer ones.
m. Fresh air is taken in through air intakes at Frame 33 at the deckhouse and passes over the cooling coils. A
circulation fan moves the cooled air to the Pilot House, Galley Mess, Crew's Berthing and Stateroom. Condensation from
the cooling coil drains to the bilge.
n. The Sea Water Cooling Pump circulates water through the condenser and out the overboard discharge.
o. The control for the Air Conditioning System is located in the air conditioning room on the Forward side of
Bulkhead 33, above the air conditioning condenser.
1-114
|
||
|
||
