EPA Section 608 Preparatory Manual
ESCO 2018
✅✅
Should EPA regulations change after a technician becomes certified it is the
technicians responsibility to comply with these changes. - -
Type 1 - ✅✅ -Small appliances, hermetically sealed and factory charged with
5 lbs or less of refrigerant.
type 2 -✅✅ -Maintain, service, repair, or dispose of medium, high, and very
high pressure appliances containing more than 5 lbs. of refrigerant
High Pressure Refrigerants - ✅✅ -Have a pressure between 155 psig and
340 psig at a liquid phase temperature of 104°F
Medium Pressure Refrigerants - ✅✅ -Pressure between 30 psig and 155
psig at a liquid phase temperature of 104°F
Type 3 - ✅✅ -Maintain, service, repair, or dispose of low pressure appliances
(centrifugals and chillers)
flash-gas -✅✅ -The refrigerant vapor that forms as the result of a rapid
change from its liquid state due to a reduced pressure condition.
Thermostatic Expansion Valve - ✅✅ -Used to control the superheat in an
evaporator by metering the correct refrigerant flow to the evaporator
Service Valves - ✅✅ -Never front seat (turn the valve stem clockwise as far
as it will go) a service valve when the system is in operation
Gauge Manifold Set - ✅✅ -Compound gauge (blue), High Pressure gauge
(red), hoses are attached to measure the systems pressures. Compound
Gauge measures low-pressure (psig) and vacuum (inches Hg), the
high-pressure gauge measures (discharge) pressure. Depending on the
refrigerant the hi-pressure gauge may be rated 500 or 800 psig.
EPA recommends that hoses be equipped with low loss fittings or valves that
manually close to minimize refrigerant loss when hoses are disconnected,
ESCO 2018
✅✅
Should EPA regulations change after a technician becomes certified it is the
technicians responsibility to comply with these changes. - -
Type 1 - ✅✅ -Small appliances, hermetically sealed and factory charged with
5 lbs or less of refrigerant.
type 2 -✅✅ -Maintain, service, repair, or dispose of medium, high, and very
high pressure appliances containing more than 5 lbs. of refrigerant
High Pressure Refrigerants - ✅✅ -Have a pressure between 155 psig and
340 psig at a liquid phase temperature of 104°F
Medium Pressure Refrigerants - ✅✅ -Pressure between 30 psig and 155
psig at a liquid phase temperature of 104°F
Type 3 - ✅✅ -Maintain, service, repair, or dispose of low pressure appliances
(centrifugals and chillers)
flash-gas -✅✅ -The refrigerant vapor that forms as the result of a rapid
change from its liquid state due to a reduced pressure condition.
Thermostatic Expansion Valve - ✅✅ -Used to control the superheat in an
evaporator by metering the correct refrigerant flow to the evaporator
Service Valves - ✅✅ -Never front seat (turn the valve stem clockwise as far
as it will go) a service valve when the system is in operation
Gauge Manifold Set - ✅✅ -Compound gauge (blue), High Pressure gauge
(red), hoses are attached to measure the systems pressures. Compound
Gauge measures low-pressure (psig) and vacuum (inches Hg), the
high-pressure gauge measures (discharge) pressure. Depending on the
refrigerant the hi-pressure gauge may be rated 500 or 800 psig.
EPA recommends that hoses be equipped with low loss fittings or valves that
manually close to minimize refrigerant loss when hoses are disconnected,
