ELECTRONIC TEST CHAMBER ASSEMBLY, MODEL 453
UNIT MAINTENANCE - CONT
1. Clean exterior of vacuum pump/compressor, control assembly, and air cylinder using
isopropyl alcohol (anhydrous). Air dry all parts.
1. Visually inspect all components for wear or damage.
2. Discard worn or damaged parts.
1. Install control assembly (3) as follows:
a. Position control assembly (3) on mounting base (9), secure with four screws (14).
Compression nuts used on pneumatic tubing are to be finger-tightened only. Do
not use wrenches; overtightening will not give an improved seal but will hasten
the splitting of compression sleeves and pneumatic tubing.
b. Attach tubing to VAC PUMP port, AIR COMP port, AIR CYL port and ALT CHMBR port
using compression nuts finger tight.
c. Attach altitude chamber electrical plug to altitude electrical connector (12) on control
d. Attach vacuum pump/compressor electrical plug to VAC pump connector (11) on control