Toshiba GF632 Instruction Manual page 25

(3) Flow Direction
Install the detector in accordance with the flow direction arrow on the detector. See Figure 4.8.
Figure 4.9 Flow direction arrow on the detector
(4) Preventing an Empty Pipe Condition
Design an upright pipe run (Figure 4.9) or sufficient head pressure (Fig. 4.10) at the
downstream detector outlet if there is a possibility of the detector pipe becoming emptied.
Figure 4.10 Detector with an upright pipe run at downstream outlet
Figure 4.11 Detector with sufficient head pressure at downstream outlet
Upright pipe run
Detector
Detector
－ ２４ －
Flow direction arrow
６Ｆ８Ａ０８８３