Thermo Scientific SOLA II, User Manual

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The X-Purge System
Timer Adjustment
G-8 SOLA II User Guide Thermo Fisher Scientific
The required time delay for safe operation is determined at the factory.
Adjustment of the time delay should not normally be required. Do not adjust
the time delay unless you are certain that you will not create a potentially
hazardous situation.
Caution
Do not open the explosion proof housing for the X-Purge unless the
area is known to be non-hazardous or the power is removed from the X-Purge
unit.
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Caution
Do not decrease the timer setting lower than the value specified in
the application notes provided with the system or lower than the initial
setting when received from Thermo Fisher.
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Caution
If the timer setting is too short, the analyzer system is not purged
adequately before power is applied. This can result in equipment damage and
injury to personnel.
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The time delay relay uses digital switches to set the length of delay before
applying power to the analyzer system. The number of seconds for the delay
can be determined by adding the numbers together for all switches that are
set to the ON position. (The switches are located on the top of the time delay
relay inside the X-Purge housing.) For example, if switches 256, 128, 64, and
32 are ON, the time delay is 8 minutes (i.e. 256 + 128 + 64 + 32 = 480
seconds). When replacing the time delay relay, the switches on the new relay
must be set the same as on the relay being replaced.
Timer Adjustment