Installation & Operation Manual

TST-770 WSD Full Line Manual-RevA © 2021 Truck System Technologies and Pressure Systems International Inc. All Rights Reserved Worldwide.
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Page 6
TST-770 SYSTEM DEFAULT SETTINGS
COLD TIRE PRESSURE (CTP) SYSTEM DEFAULT SETTINGS
Pressure Unit PSI
Temperature Unit ºF
High Pressure Alert 125 PSI
Low Pressure Alert 90 PSI
High Temperature Alert 158ºF
Power Unit Cold Tire Pressure
Steer Axle 100 PSI
Drive Axle 100 PSI
Spare Tire 100 PSI
Power Unit Manual Input High and Low Pressure Alert
High (Axle1/2/3/S) 125 PSI
Low (Axle1/2/3/S) 90 PSI
Trailer Cold Tire Pressure
Trailer # 1/2/3/4/5 100 PSI
Trailer Manual Input High and Low Pressure Alert
High (Axle1/2/3/S) 125 PSI
Low (Axle1/2/3/S) 90 PSI
Note: Default pressure settings are based on the cold tire pressure. Once the customer
enters into “Manual Input High and Low Pressure Alert” to set the cold pressure
manually, “System is currently using manually input high/low pressure settings” will
appear on the screen.
Cold Tire Pressure (CTP) defaults alerts are 25% above CTP for High Pressure
and 10% below CTP for Low Pressure.
Example Scenarios
Steer Axle CTP of 100 PSI
Axle 1 HIGH Alert 125 PSI (100 PSI CTP x 125% = 125 PSI)
Axle 1 LOW Alert 90 PSI (100 PSI CTP x 90% = 90 PSI)
Drive Axle CTP of 110 PSI
Drive Axle 2/3 HIGH Alert 138 PSI (110 PSI CTP x 125% = 138 PSI)
Drive Axle 2/3 LOW Alert 99 PSI (110 PSI CTP x 90% = 99 PSI)
Spare CTP of 120 PSI
Spare HIGH Alert 150 PSI (120 PSI CTP x 125% = 150 PSI)
Spare LOW Alert 108 PSI (120 PSI CTP x 90% = 108 PSI)
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