10
４．HOW TO USE
４−１．Before operation
Be sure to keep cautional items of use not only for first user but for already experienced staff.
If not keep these cautional items, the unit may be defective and correct gas detection may not be performed.
４−２．Mounting/detaching the unit
Indicator/alarm unit for RM-590 series shall be used after housing it in either exclusive single case or multi-unit case.
４−２−１．Mounting the unit
・Open the front cover of this unit.
・Confirm that the power switch is at OFF.
・With the disengagement lever at down position, mount into the case.
（Confirm that the edge connector is put in firmly）
・Confirm that the disengagement lever is turned upward when indicator/alarm unit is mounted into the case firmly.
・After confirmation of lever position, put ON the power switch, and then, close the cover.
４−２−２．Detaching the unit
・Open the front cover of this unit.
・Confirm that the power switch is at OFF.
・Push disengagement lever down to release the lock.
・Pull out the unit from the case.
・Turn the lever upward and close the cover.
Mounting/detaching of indicator/alarm unit shall be done according to the
above procedures. If not, stopping metal of the unit may be transformed
and the cover can not be closed.
Especially, if the unit would be mounted into the case while the
disengagement lever is positioned upward(Locked condition), the lever may
be transformed.
CAUTION
