19
turn to in stand by status.
C Application of Reservation Timing
Biological Safety Cabinet is equipped with UV lamp for sterilization. Sterilization time should
be at least 30min. In order to save the waiting time, we develop reservation timing function.
Reservation time range is from 0 to 99 hours and 59minutes. This function helps to save time and
improves efficiency.
2.5. Instructions for Operation
2.5.1 Notice
（1）
Make sure input voltage is correct and stable. The rated load of main power socket should be
higher than cabinet consumption. Plug must be well grounded.
（2）
In order to avoid air turbulence, the operator should slightly move his arms during experiment.
Hands should stay inside the working area at least 1 minute before operating. In order to
decrease the times of arms moving into and out of the working area, prepare all the necessary
items inside the cabinet before starting experiment;
（3）
Moving principles of different samples inside cabinet: When two or more samples need to be
moved, be sure that low-polluting samples move to high-polluting samples. Movement of
items should also follow the principles of slow-moving.
（4）
Samples placed in parallel: Samples should be placed in the cabinet parallel to avoid cross-
contamination between samples and blocking back air grille.
（5）
In order to avoid samples being sucked into the negative passage or the blower, do not place
soft and slight samples (for example: soft tissue) on the surface during experiment;
（6）
The weight of items placed in the cabinet should be no more than 23Kg/25×25cm
2
；
（7）
Avoid vibration: avoid using vibration equipment (eg centrifuges, vortex oscillator, etc.)
inside the cabinet. Vibration would cause lower cleanliness of operating area and affect
operator protection.
（8）
No flame: No flame is allowed inside the cabinet. Using of fire will lead to airflow disorder,
and filter damage. If sterilization is required during the experiment, infrared sterilizer is
highly recommended.
（9）
HEPA filter life: With the usage time increasing, dust and bacteria accumulate inside HEPA
filter. Filter Resistance is getting bigger, when it reaches the maximum point, there will be
audible and visual alarm. Please replace new HEPA filter, otherwise it will affect the safety
performance of the equipment. The used filter should be processed as medical waste.
（10）
There is a negative passage surrounding the work area, which is sealed strictly in the factory.
The operator is not allowed to remove or loose screws of those parts. If necessary, please
