>>> 'semi' problem from bob -- Mon Nov 13 09:41:17 1989 <<<

The semi remains down while Steve Hoagland repairs the RF 
supply. It should be operational later today.

>>> 'semi' problem from bob -- Wed Nov 15 15:31:43 1989 <<<

The semi is operational with a rented power supply. It's power
supply is being repaired and should be early next week.
The semi is up.

>>> 'semi' problem from hoagland -- Fri Dec  8 09:47:06 1989 <<<

The original Advanced Energy RF supply has been repaired(with
upgrades) and reinstalled in the semi.  It was operated for
20 minutes without problem- the semi is up and available for use. 

>>> 'semi' problem from evan -- Thu Mar  1 08:42:42 1990 <<<

taurus box failure

>>> 'semi' problem from hebert -- Thu Mar 15 15:58:45 1990 <<<

The M&W heater/chiller heats but will not cool.

>>> 'semi' problem from rnorman -- Fri Mar 16 09:55:23 1990 <<<

I called M&W and told them the situation that the relay on the 
PCB is engaging but the compressor is not turning on.  John Pataye
said that is looks like the freon pressure interlock switch is open.
I talked with Bob and it was decided to call Aladin to check out
and recharge the compressor.  Bob will make the arrangements.
Dave said the chiller is usable, but will need it with in one week.

>>> 'semi' problem from bob -- Fri Mar 16 11:11:18 1990 <<<

Alladin Mechanical Contractors has been contacted regarding the servicing
of the chiller on the semi. Doug Murray of Alladin, will be sending
someone by for an estimate of this repair.

>>> 'semi' problem from rnorman -- Mon Mar 19 12:18:10 1990 <<<

The Alladin Contractor has arrived and is working on the chiller.
The semi will be down until he is done.

>>> 'semi' problem from rnorman -- Mon Mar 19 13:01:37 1990 <<<

The man from Alladin found the problem with the chiller.  It is
the large coil on the contactor located under the "reset box".
He does not have the coil on hand, but will come back tomorrow
with the new coil.  The semi is up for use until he comes back 
tomorrow.

>>> 'semi' problem from rnorman -- Tue Mar 20 14:26:00 1990 <<<

Problem: The Heat/Cool chiller was not chilling down.

Cause: The coil to the large contacter under the "reset box"
       was bad; the contacter was not engaging the compressor.

Solution: Alladin found the problem and replaced the coil.  The
          compressor had a freon leak and needed charged with freon;
          the fitting/gas valve was tightened down.  The Alladin
          repairman also noticed that there was no interlock/timer
          on the compressor to keep it from burning up; due to starting
          up too quickly after a power failure.  He installed a
          3 min. time delay relay to the contacter to prevent damage
          to the compressor; with heberts permission.  The chiller is
          now up and operating.

>>> 'semi' problem from rnorman -- Tue Mar 20 14:41:13 1990 <<<

The main power outlet to the chiller is loose and the plug
slips out.  The power to the chiller acts intermittent if it
is moved.  The power receptacle and/or the plug needs to be
replaced.

>>> 'semi' problem from bob -- Wed Mar 21 08:27:40 1990 <<<

The problem of the plug/recepticle needing replacement on the
semi has been added to Phill's techjobs. As this problem is
not effecting the use of the semi it will be removed from the
e-stat board.

>>> 'semi' problem from phillip -- Tue Mar 27 11:10:08 1990 <<<

P: A.C. line cord receptacle is intermittent.
S: Replaced 3P/240V/4wire receptacle. The chiller
   no longer turns on & off by moving the power cord.

The chiller is up.

>>> 'semi' problem from hebert -- Wed Mar 28 09:30:05 1990 <<<

Problem: The CHF3 gas line wouldn't pump out. The minimum flow
was 9.5 sccm after pumping out (should be 0.0 sccm). 

Solution: The leak was determined to be at the shut off valve that
isolates the regulator from the gas line. There IS NO external leak
that is detectable by monitoring gas flow with MKS Baratron.

>>> 'semi' problem from hebert -- Wed Mar 28 15:18:52 1990 <<<

It would be a good idea to change the valve that causes gas to
leak from the regulatorr to the gas line. It's easy to do and
will prevent any further reports of gas line leak on the CHF3 line.

>>> 'semi' problem from parrish -- Tue Apr  3 10:59:29 1990 <<<

problem:    gas leaking to the line.

cause:      shutoff valve leaking across the seat

solution:   removed valve from system,cleaned,reinstalled and checked
	    line. system and line tight.
