Olicom 9600 manual Appendix a to contact

9600 Compressor Installation, Operation, and Maintenance

CTI-CRYOGENICS

						HELIX TECHNOLOGY CORPORATION
	Table C-1: Compressor Troubleshooting Procedures (Continued)
	Problem		Possible Cause		Corrective Action
3) System circuit breaker		1)	Damaged On-Board	1)	Check for compressor
	(CB1) will not remain in		power cable, connectors,		operation with cryopump
	the ON (1) position		or drive motor.		cable disconnected from
	when switched ON. The				compressor. Refer to
	Control Circuit circuit				Appendix A to contact
	breaker (CB2) trips				the Customer Support
	when excessive current				Center if the compressor
	is being drawn by the				operates improperly.
	cold head or 24 volt
	compressor control cir-	2)	Damaged component in	2)	Refer to Appendix A to
	cuits.		the compressor power or		contact the Customer
			control circuit.		Support Center.
4)	System circuit breaker	1)	Thermal protective	1)	Check for inadequate
	(CB1) remains in the ON		switches are open.		water cooling. Refer to
	(1) position and the com-				Table 1-3.
	pressor stops after sev-
	eral minutes of operation	2) Very cold water has caused		2)	Recheck for proper cool-
	and remains OFF (0).		a restriction of oil flow		ing water temperature.
			through the oil injection		Refer to Table 1-3.
			orifice during start-up.		Restart compressor
					repeatedly until continu-
					ous operation is achieved.
5)	System circuit breaker	1)	Loss or degradation of	1)	Check that line voltage is
	(CB1) trips after a period		power from the source.		correct on all phases.
	of running.
		2)	Defective motor windings.	2)	Check running current on
					all phases.
				3)	Refer to Appendix A to
					contact the local Cus-
					tomer Support Center.
6) All cryopumps making		1) Cryopump power phase		1)	Set power phase switch in
	loud noise.		switch is in the wrong		opposite position.
			position.

P/N 8040540 C-3