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fig. 4

2. Open the blow down valve for a few seconds. This should dislodge accumulated dirt or sediment from the medium.  

If it does not, then the coalescing medium must be removed from the Series CRS separator for cleaning. This can be 

accomplished by closing the isolation valves to isolate the separator from the system.  Make sure that the system water 

was allowed to reach a safe handling temperature, and the separator to reach a zero pressure condition. Open the 

blow down valve on the bottom of the separator to drain the unit. Make sure that all flow from the blow down valve 

has stopped. If water continues to flow, the isolation valves must be repaired or replaced before proceeding.

3. For Series CRS separators with removable heads, remove the flange bolts that hold the coalescing medium housing 

cover (head) in place on the bottom of the separator.

4. Clean the medium and reinstall in the Series CRS separator. Replace the cover head gasket with a new one and 

reinstall the cover making sure that the flange bolts are tightened. The bolts should be torqued incrementally to 30%, 

60%, and then to 100% of the appropriate value shown on the table on the next page. The bolts should be torqued in 

the sequential order of the appropriate pattern shown in Figure 4.

WARNING: System fluid under pressure and/or at high temperatures can be very hazardous. Before servicing, 

reduce system pressure to zero or isolate the vessel from the system. Allow system to cool below 100°F and 

above 35°F. Failure to follow this instruction may result in serious personal injury and/or property damage.

The coalescing medium in the Series CRS separator may need to be cleaned periodically. This is true during the initial 

start-up period. The need to clean the coalescing medium will be evidenced by a high pressure drop across the 

separator or by pump cavitation problems. To clean the medium:

1. Allow the system water to reach a safe handling temperature

Summary of Contents for CRS Series

Page 1: ...Y IS INVOLVED FAILURE TO FOLLOW THE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD Safety Message Level DANGER WARNING CAUTION ELECTRICAL HAZARD NOTICE Indication A hazardous situation which if not avoided will result in death or serious injury A hazardous situation which if not avoided will result in death or serious injury A hazardous situation which if not avoided will result in major or minor inju...

Page 2: ...al injury leakage and or property damage WARNING Read carefully the product installation operating and maintenance instructions Failure to follow the instructions and warnings in the manual may result in serious or fatal injury and or property damage and will void the product warranty This product must be installed by a qualified professional Follow all applicable local and state codes and regulat...

Page 3: ...N Installation and maintenance must be performed by a qualified professional Service should not be performed on any component in an active hydronic loop Before attempting to make any required adjust ments properly isolate and drain the branch loops that require service and allow the valves to reach a safe handling temperature and zero pressure condition Use proper safety equipment including gloves...

Page 4: ...ntinuous air removal In case the piping arrangement does not permit the installation of a single separator on the main additional separators should be installed on each loop or zone In this event only one expansion tank is required for the system Even with a No 98 air vent installed on the separator it is recommended that additional Bell Gossett air vents be installed on high points in the system ...

Page 5: ...rnal leakage or corrosion If found the tank must be replaced Failure to follow these instructions may result in serious personal injury or death and property damage 1 The system water contains air bubbles entrained air and dirt particles 2 Large air bubbles quickly rise to the top of the vessel and into the vent Micro bubbles coalesce and form larger bubbles Entrained air is pulled out of solution...

Page 6: ... medium and reinstall in the Series CRS separator Replace the cover head gasket with a new one and reinstall the cover making sure that the flange bolts are tightened The bolts should be torqued incrementally to 30 60 and then to 100 of the appropriate value shown on the table on the next page The bolts should be torqued in the sequential order of the appropriate pattern shown in Figure 4 WARNING ...

Page 7: ...valve and the component to dry Note If the component or valve appears to have been damaged replace it 3 Starting with the second thread of the NPT male component apply a 360 bead of Loctite 567 thread sealant lubricant as shown below Follow Loctite handling precautions as noted on the product labeling 4 If Loctite 567 is unavailable recommends RectorSeal No 5 pipe thread sealant for all non glycol...

Page 8: ...r maximum pressure resistance allow the Loctite 567 or RectorSeal No 5 thread sealant to cure for 24 hours PTFE tape typically does not require curing to achieve maximum pressure resistance Loctite and Loctite 567 are registered trademarks of Henkel AG Co RectorSeal No 5 is a registered trademark of RectorSeal Corporation NOTICE Over application of torque may cause damage to the Separator or acces...

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