ENMET GS-24-DF Gas Sampler - Manual (Page 10)

6
5.2 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.
ƒ Remove the outlet fittings, pump arm with diaphragm and note the orientation of the check valve hosing and gasket.
See figures 5 and 6.
ƒ Remove flat-head screw and check valve housing.
Figure 5: Check Valve Housing Replacement Details
ƒ Verify that gasket and housing are in the proper position.
Verify Gasket Verify Housing position – Inside and Outside
Figure 6: Proper Orientation of Check Valve Housing and Gasket
ƒ Replace check valve housing with flat head screw.
ƒ Verify proper position of check valve housing.
ƒ Reattach pump arm and reseal diaphragm
ƒ Reattach outlet fittings.