Sheldon SHEL LAB SVAC1, Инструкция по установке и эксплуатации

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MAINTENANCE
Note: Does the car actually have gas in the tank? Have you physically verified the computer is
plugged in? Yes, we are going to ask some very basic questions. Please bear with us.
Methodical verifications and the elimination of potential failure causes are often the quickest
means of getting a unit back into operation.
Verify the Unit Conditions
Verify the following items to make sure the unit is actually malfunctioning.
Condition Checks Condition Data Location Record Results Here
Ambient Conditions :
Verify the room
temperature falls within
the required range.
See the Required Ambient
Conditions topic on page 26 .
Operating the unit outside the
specified room temperature range
will adversely impact its
temperature performance.
The room temperature falls
within the required range:
Yes or No ?
Spacing Clearances: Verify
there is enough ventilation
spacing around the unit.
See the Required Clearances topic
on page 26 . Insufficient ventilation
spacing may be adversely impacting
temperature performance.
The oven has the minimum
required clearance spacing
around it: Yes or No ?
Operating Range : Verify
the oven is designed to
achieve the temperature
you are attempting to run
it at.
See the unit Temperature Specs
on page 72 . The oven will not
operate outside the Range
specification.
Are you attempting to
operate the oven within the
specified range: Yes or No ?
Heat-up Time : Verify the
oven has enough time to
come up to temperature.
See the unit Temperature Specs
on page 72 . The oven will not heat
up faster than the stated Time to
Temperature specifications.
The oven is being allowed
sufficient time to come up to
temperature: Yes or No ?
Stability and Uniformity:
Verify the unit is rated to
provide the stability and
uniformity you are
attempting to achieve.
See the unit Temperature Specs
on page 72 . The oven will not
reliably achieve a better
performance than the stated
Uniformity and Stability
specifications.
*
You are attempting to
achieve uniformity and / or
stability matching the stated
specifications: Yes or No ?
*
The oven may require time to achieve the specified temperature stability and uniformity after
heating up to or cooling down to an operating setpoint. This is affected by the ambient conditions
around the oven, the mass of the product or samples in the oven chamber, as well as the volume of
outgassing taking place. The longer the oven has been operating, the more heat soaked it is. This
generally shortens the time for the temperature to stabilize.