American Magnetics 135 & 136 Liquid Helium Level Instruments (CE-Marked) - Manual (Page 65)

Rev. 3 53
Service Guide
Return Authorization
6.2.3 Changing time adjustments from minutes to hours
Warning
Before removing the cover of the instrument, remove the power from
the instrument by disconnecting the power cord from the power
receptacle. Failure to do this could expose the user to high voltages
and could result in life-threatening electrical shock.
The Model 135/136 can be configured to use hours for the time settings, as
opposed to the factory setting of minutes. To configure for hours operation,
de-energize the instrument and remove the cover. Place a jumper between
pins 1 and 2 of W1 (HR position) on the printed circuit board vertically-
mounted directly behind the front panel. Replace the cover and energize
the instrument. All time-based settings should now operate in hours mode.
6.3 Additional Technical Support
If the cause of a problem cannot be located, contact an AMI Technical
Support Representative at (865) 482-1056 for assistance. The AMI
technical support group may also be reached by Internet e-mail at
VXSSRUW#DPHULFDQPDJQHWLFVFRP . Additional technical information,
latest software releases, etc. are available at the AMI World Wide Web site
at:
KWWS ZZZDPHULFDQPDJQHWLFVFRP
Do not return the Model 135/136 or other liquid helium level system
components to AMI without prior return authorization.
6.4 Return Authorization
Items to be returned to AMI for repair (warranty or otherwise) require a
return authorization number to ensure your order will receive proper
attention. Please call an AMI representative at (865) 482-1056 for a return
authorization number before shipping any item back to the factory.