Shel lab BACTRON300, Инструкция по установке и эксплуатации, Страница: 63 / 86

63 | P a g e
USER MAINTENANCE (CONTINUED)
13. The pass box doors light should illuminate, indicating that both doors are closed.
a. If the light does not activate, check that both doors are sealed.
b. If the light does not activate and both doors are sealed, there may be a problem with
door sensors. Fixing the door sensors is a service-level procedure.
14. As overpressure is established in the chamber the manometer water should drop from the
top reference ring down to the bottom ring.
15. If there is no leak, the Chamber Gas light will remain off approximately 30-minute intervals
after achieving 0.5 inches (1cm) of overpressure, as indicated by the manometer.
16. If there is a leak, the Chamber Gas light will illuminate more frequently than roughly every
30 minutes.
a. Continual chamber gas injections every 10
– 30 minutes are indicative of a large leak.
b. Failure to obtain chamber overpressure is indicative of a leak. Or the chamber
atmospheric pressure switch that sets the overpressure level needs to be adjusted.
Adjusting the chamber pressure switch is a service-level procedure.
Locating leaks
See the Locating Leaks entry on page 61 for instructions on using a hydrogen leak detector to
pinpoint or find the leak.
D
OOR
G
ASKET
M
AINTENANCE AND
U
SAGE
BACTRON door gaskets are subject to significant compression during pass box cycles. Users
cycling the pass box more than 15 times per day will need to replace the door gaskets every 3 to 6
months. Heavy institutional users may wish to keep a pair of spare door gaskets on hand (Part
Number 3450507).
Spilling sample media on door gaskets or the interior surfaces of pass box doors may cause the
gaskets to stick to the doors. This can compromise the atmospheric integrity of the pass box. The
gaskets can be cleaned with dish soap and warm water, if your laboratory or production protocol
permits.
S
LEEVE
M
AINTENANCE AND
U
SAGE
Sleeves may be washed with dish soap and warm water between uses. Disinfection should be
carried out per laboratory or production protocols. Institutions with several users for each
BACTRON may wish to keep a pair of sleeves in small, medium, and large sizes on hand. Or keep
a pair of sleeves for each user.