American Dryer Corp D-40 installation manual Operating Steam Pressure, Steam Information

Models: D-40

1 62
Download 62 pages 19.19 Kb
Page 32
Image 32

H. STEAM INFORMATION

It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the steam plumbing installation is adequate and conforms with local and state regulations or codes.

Care must be exercised when leveling steam dryers into final position. After leveling the dryer, check the downward pitch of the heat exchanger from front to rear with a level. Likewise, check the downward pitch of the return condensate manifold toward its outlet part. Absence of these downward pitches will result in probable water hammer and premature heat exchanger fracture and leakage.

The presence of condensate in the steam will cause water hammer and subsequent heat exchanger failure. The steam supply connection must be taken from the top of a well-dripped steam main. If the supply run-out to the dryer exceeds 20 feet (6.1 meters), it should be dripped just before the control valve with a proper trap and dirt pocket.

IMPORTANT: Failure to comply with the requirements stipulated in this manual can result in component failure, which will VOID THE WARRANTY.

NOTE: This dryer is manufactured with a pneumatic (piston) damper system, which requires an external supply of air (80 PSI ± 10 PSI [5.51 bars ± 0.68 bars]).

1.Steam Coil PH Level

The normal PH level for copper type steam coils must be maintained between a value of 8.5 to 9.5. For steel type steam coils the PH level must be maintained between a value of 9.5 to 10.5. These limits are set to limit the acid attack of the steam coils.

IMPORTANT: Coil failure due to improper PH level will VOID THE WARRANTY.

2.Steam Requirements

OPERATING STEAM PRESSURE

MINIMUM

15 psig

103 kPa

MAXIMUM

150 psig

862 kPa

RECOMMENDED

100 psig*

689 kPa

HEAT INPUT (NORMAL LOAD)

2.6 bph

3.0 bph

 

 

 

 

CONSUMPTION (APPROXIMATE)

90.1 lbs/hr

40.9 kg/hr

@ 125 PSI (8.6 BARS)

104 lbs/hr

47.2 kg/hr

Shaded areas are stated in metric equivalents

*Minimum operating pressure for optimum results.

3.Installation Instructions

To insure an adequate supply of steam is provided, be sure that the steam supply lines and steam return lines are sized and laid out as stipulated in this manual. Inadequate steam supply lines and steam return lines or improper steam plumbing will result in poor performance and can cause component failure. Clean, dry steam must be provided to the dryer.

IMPORTANT: Steam coil failure due to water hammer by wet steam will VOID THE WARRANTY.

28

Page 32
Image 32
American Dryer Corp D-40 installation manual Operating Steam Pressure, Steam Information