Maintenance 7-7
7.6 Draining the Water Trap
Because the facility air supply may contain moisture that can damage the dispensing system, the S-920 is
equipped with a water trap that condenses this moisture before it enters the pneumatic system. The
operator or technician must drain the water trap weekly or whenever it is full.
Tools and Materials Needed:
• Container for waste water
To drain the Water Trap:
1. Locate the Water Traps at the rear of the system.
2. Shut off facility air pressure and disconnect the facility air supply from the Main Air Pressure
Regulator Inlet.
3. Hold a container under the Water Traps to catch the water and open the water drain knob by
turning counterclockwise.
4. After the trap has been drained, close the Water Trap drain knob by turning clockwise.
5. Reconnect the facility air supply to the Main Air Pressure Regulator Inlet.
Item Description
1 Water Trap
3 Drain Knobs
Figure 7-3 Draining the Water Traps
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