7
Low level Alarm
The Low Level alarm is adjustable from approximately 0.0 to 15 inches of Hg.
To adjust the low level, insert a screwdriver into pot R19 and rotate it to the
desired level. MIN = 0 and MAX = 15 inches of Hg.
NOTE
: If you want to disable the low alarm, turn the pot counter clockwise
until it stops.
High Level Alarm
The High Level alarm is adjustable from approximately 15 to 30 inches of Hg.
To adjust the high level, insert a screwdriver into pot R16 and rotate it to the
desired level. MIN = 15 inches of Hg. and MAX = 30 inches of Hg.
NOTE: If you want to disable the high alarm, turn the pot clockwise until it
stops.
Alternate Method for Accurate
High/Low Level Adjustment
If a high degree of accuracy is required, then use the procedure in the
following example:
Example: If you desire a high level alarm at 26.3 inches of Hg.
1. Adjust your vacuum level until the digital readout
reaches 26.3.
2. Rotate the high level alarm pot full R16 counter-clockwise.
3. Then, rotate the high level alarm pot R16 clockwise slowly until
the high level LED comes on. This represents
the correct adjustment for 26.3 inches of Hg.
This method can be used for low level adjustment, except the rotation of the
low level alarm pot R19 is reversed.
