5
MSC4000 - MSC15000 USER GUIDE
2.3
Airline Plumbing
All connections are made to the outside of the cabinet as follows:
•
Plumbing must be supported independently of the dryer.
•
If vibration is present, flexible metal hoses must be installed to prevent it from being
transmitted to the dryer.
•
Use unions or flange joints.
•
Bypass piping around the dryer is recommended for ease in servicing or removal of unit if
necessary.
•
Direction of flow through the dryer must be observed. A check valve on the outlet of the
dryer to prevent back flow and false loading is recommended.
NOTE:
Use two wrenches when connecting to dryer piping so as to prevent damage to internal
air or water lines.
On water-cooled units, install a strainer. Minimum water pressure is 30 psi (2.1 bar g). Maximum
water inlet pressure is 150 psi g (10.4 bar g). Dryers are designed for inlet water temperature.
Higher water temperature reduces dryer capacity (consult the factory for water temperatures
above 85ºF (29ºC).
2.4
Electrical Connections
Before connecting electrical power to the dryer if applicable
•
Check for correct voltage and phase at electrical connection box.
•
Install a fused disconnect switch near the dryer.
•
Connect power to the stripped leads located in the electrical connection box or to main
lugs of contactor, whichever is necessary.
• (
NOTE:
All units must be externally grounded to protect against the possibility of
severe electrical shock)
•
CAUTION:
Wire the dryer separately from the air compressor. The dryer must NOT cycle
on and off with the air compressor.
•
Phase rotation is only important if the dryer has a 3-phase condenser fan. Fans must
PULL air through the condenser coil.
•
Crankcase heaters are pre-wired at the factory to the line side of the terminal box or
contactor. Heaters must be energized at all times, therefore the main disconnect must be
left on except when servicing the dryer.
Parameter
Concentration
Langelier Index
0 - 1
pH
7.5 - 9
Sulfate (SO) -24
< 50 ppm
Electrical Conductivity
10 - 500 μS/cm
Ammonia (NH
3
)
< 1 ppm
Chloride (Cl)
< 50 ppm
Total Hardness
70 - 150 ppm CaCO
3
Oxygen
< 0.1 ppm
Iron (Fe)
< 0.2 ppm
Nitrate (NO
3
)
< 2 ppm
Alkalinity (HCO) -3
70 - 300 ppm
Hydrogen Sulfide (HS) 2
< 0.05 ppm
Free CO 2
< 5 ppm
Aluminum (Al)
< 0.2 ppm
Condenser Cooling Water Pressure
30 - 150 psi g (2.1 - 10.4 bar g)