Models 947, 948 and 960 Leak Detectors Operations and Service Manual
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1.1 Platform Electronics
The 947/948/960 use Varian Vacuum Technologies’ Platform leak detector electronics
architecture to:
❑
Operate the spectrometer assembly
❑
Control the mechanical and high vacuum pumps
❑
Control the valves
❑
Provide leak rate and system status information to the operator interface and rear I/O
An advanced electronics platform provides complete diagnostic information and allows
adjustments without testpoints or potentiometers. The platform is a collection of printed
circuit boards that operate using the PC/104 Bus Structure to perform the various functions
of a helium mass spectrometer leak detector. The microprocessor also stores key tuning
parameters and retains them in EPROM. This provides for fast recovery after a momentary
loss of line voltage.
1.2 Unpacking the 947/948/960
When receiving the 947/948/960, the following pieces are included:
❑
Models 947/948/960 leak detector
❑
Service Pendant
❑
Power cable (115 VAC or 230 VAC)
❑
Pump manuals (for the purchased configuration)
Refer to the
Unpacking Instructions
located on the outside of the shipping container before
opening the container. The 947/948/960 are carefully packed onto a shock absorbing skid
and enclosed by a heavy cardboard container banded to the skid. The factory packing
provides maximum protection during shipment.
1.2.1 Unpacking Instructions
To unpack the 947/948/960 and remove it from the skid:
1. Inspect the container for evidence of damage in shipment.
a. Do not discard any evidence of rough handling.
b. Report any damage to the carrier and Varian Vacuum Technologies Customer
Service at 1-800-8VARIAN without delay.
2. Carefully remove the outer shipping container.
3. Inspect the leak detector and related items immediately for any indication of shipping
damage.
4. Carefully cut the strapping holding the leak detector on the skid.
Summary of Contents for 948
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