Carver Mini C Operation, Installation, And Maintenance Manual page 18

WARNING: CHECK VALVES SHOULD BE INSTALLED IN BOTH WATER AND AIR LINES TO
PREVENT CONTAMINATING EITHER SUPPLY LINE WITH THE OTHER.
The addition of shutoff valves in both water and air lines will facilitate operation and maintenance.
IMPORTANT: After cooling with water, residual water should be purged from the platen cores with compressed air
before the next heating cycle.
The air supply should be a clean, dry, regulated compressed air source.
IMPORTANT: Verify that the water pressure is greater than the air pressure or the water will not enter the platen
cooling channels. Set regulator below water pressure.
The following is to be used when determining the cooling medium required for the temperature being used.
AIR ONLY when temperature is above 600°F (315°C)
AIR/WATER MIX when temperature is between 600° & 350°F (315° & 177°C)
WATER ONLY when temperature is below 350°F (177°C)
3. WATER AND AIR OUTLET CONNECTIONS
Each outlet hose will be used to drain the water, air and water/air mix from the platen it is connected to. The outlet
hoses can be connected to a common manifold or separately connected to the plants drain system.
The outlet manifold or hoses must be connected to a drain vented for steam with a steel pipe.
4. STEAM CONNECTIONS
Each steam heated platen is equipped with an inlet and outlet flexible metal hose for steam heat connections. The
customer is to connect one hose of each platen, on the same side, to a steam source and the other hoses, opposite side, to
a drain line, preferably through a steam trap.
IMPORTANT: Do not vent steam line with copper or plastic. Use only steel pipe and install to standard steam
specifications.
The outlet manifold must be plumbed downward to drain the platens properly. If the manifold is plumbed upward,
CARVER, INC. recommends the use of a check valve to eliminate backflow into the platens and a pump to recirculate
the drain water.
CARVER, INC. will not guarantee proper cooling if the drain is not plumbed according to CARVER, INC.
recommendations.
A pressure gauge and regulator are recommended components for your plant air supply.
A manual shutoff valve in each line will aid in future maintenance procedures.
3-7 Carver Inc