1 Safety Instructions
6
Series 275 Convectron Gauge Bridge Amp PC Board
Instruction Manual - 275331
1.2 Damage Requiring Service
Disconnect the product from all power sources and refer servicing to Qualified Service Personnel
under the following conditions:
a. When any cable or plug is damaged.
b. If any liquid has been spilled onto, or objects have fallen onto, the product.
c. If the product has been exposed to rain or water.
d. If the product does not operate normally even if you follow the operating instructions. Adjust
only those controls that are covered by the operation instructions. Improper adjustment of other
controls may result in damage and will often require extensive work by a qualified technician to
restore the product to its normal operation.
e. If the product has been dropped or damaged.
f.
When the product exhibits a distinct change in performance. This indicates a need for service.
Do not substitute parts or modify instrument.
Because of the danger of introducing additional hazards, do not install
substitute parts or perform any unauthorized modification to the product.
Return the product to a service facility designated by Granville−Phillips for
service and repair to ensure that safety features are maintained. Do not use this
product if it has unauthorized modifications.
Replacement Parts − When replacement parts are required, be certain to use
the replacement parts that are specified by Granville−Phillips or that have the
same characteristics as the original parts. Unauthorized substitutions may
result in fire, electric shock or other hazards.
Safety Check − Upon completion of any service or repairs to this product, ask
the Qualified Service Person to perform safety checks to determine that the
product is in safe operating order.
Be aware that when high voltage is present in any vacuum system, a
life threatening electrical shock hazard may exist unless all exposed
conductors are maintained at Earth ground.
This hazard is not peculiar to this product.
Be aware that an electrical discharge through a gas may couple dangerous
high voltage directly to an ungrounded conductor almost as effectively as
would a copper wire connection. A person may be seriously injured or even
killed by merely touching an exposed ungrounded conductor at high potential.
This hazard is not unique to this product.
Install suitable devices that will limit the pressure to the level that the vacuum
system can safely withstand. In addition, install suitable pressure relief valves
or rupture disks that will release pressure at a level considerably below the
pressure that the system can safely withstand.