ENMET DC Powered Sample Module - Manual (Page 16)

ENMET Corporation Gas Sampling Unit
12
6.2.2 Check Valve Housing Replacement
If the check valve becomes damaged or to warn to operate correctly it can be replaced.
Pump repair kit ENMET part number 04018-116.
W ARNING : The check valve housing and associated gasket must be installed in the proper position for the pump to operate
correctly. If they are installed improperly the pump will flow in the wrong direction.
Remove the outlet fittings, pump arm with diaphragm and note the orientation of the check valve hosing and gasket.
See figures 12 and13.
Remove flat-head screw and check valve housing.
Figure 12: Check Valve Housing Replacement Details
Verify that gasket and housing are in the proper position.
Verify Gasket Inside Outside
Verify Housing position – Inside and Outside
Figure 13: Proper Orientation of Check Valve Housing and Gasket
Replace check valve housing with flat head screw.
Verify proper position of check valve housing.
Reattach pump arm and reseal diaphragm
Reattach outlet fittings.