14
SR25.X-X | 1.01.01
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1
Pump head [outside the cooler housing)
2
Cooler front panel
3
Recommended monting distance
4
Pump motor (inside the cooler housing)
Figure 5 SR25.2: Mounting distance between front panel and pump motor
12 SUPPLY CONNECTIONS
12.1 TUBING CONNECTIONS
The tube connections are on the upper side of the pump. The standard threaded tube connectors are
DN 4/6. Tube connections with tube nipples are available as an option (see spare parts list chapter 16).
Note
Do not mix up tube connections for sample gas inlet and outlet; the
connections are marked accordingly! Check for tightness of all sample lines
after connecting!
Connect the tubing to the regular tubing connectors as follows:
•
Remove the union nut from the sealing ring couplings by turning it anti-clockwise. The nut should
be removed from the thread with great care to ensure that the loose sealing ring inside the nut
is not lost.
•
Place the union nut over the connecting hose.
•
Place the sealing ring over the connecting hose with the thicker bead towards the nut.
•
Place the tubing over the nipple on the thread.
•
The union nut is to be screwed tight by hand.
The tubing will no longer be able to slip off, and is now compression-proof.
