Uniphos ASP-40 Instruction Manual Download Page 8

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CONNECTOR HOLDER

RUBBER TUBE CONNECTOR

Fig. -10 Rubber tube connector assembly

4.3 Correcting leaking pump:

In case of a leaking pump the following should be checked and if necessary replaced or

corrected

Symptom

Corrective action

Rubber tube connector is

loose

Rubber tube connector is

worn or damaged

Piston sticks or slip too

easily

One-way valve(s) on the

pump is leaking

Tighten connector holder

Replace the tube connector

(inlet adapter)

Clean and re-grease inside

of barrel and /or replace
piston gasket

Return for service

* * * * * * * * *

Summary of Contents for ASP-40

Page 1: ...UNI AIR IN PHOS PRECISION SAMPLING PUMP MODEL ASP 40 STRUCTION MANUAL...

Page 2: ...is a piston and barrel air sampling pump Fig 1 For measurement a detector tube with both ends cut is connected to the rubber tube connector at the end of the barrel When the piston is withdrawn by pu...

Page 3: ...nd reaching 50 cc 1 2 stroke or 100 cc full stroke mark For locking the red dots on the stopper and shaft have to be aligned In this position when the shaft is pulled it gets locked at 50 or 100 cc ma...

Page 4: ...he sample air and produces a coloured stain in the sensing chemical The length of the coloured stain measures the impurity gas concentration in ppm on the tube scale The measurement involves the follo...

Page 5: ...p the end of the tube in the sample gas source while the gas is being drawn through the tube for the allotted sampling time approximately 1 3 minutes as indicated on the tube sheet The sampling is con...

Page 6: ...The following steps are recommended 3 1 Insert a new detector tube without breaking its ends into the rubber tube connector 3 2 Align the red dots and pull the pump handle a full stroke 3 3 Wait for t...

Page 7: ...bber packing of the piston iv Inspect the piston gasket on the end of the plunger for damage To replace the gasket use a small screw driver or other sharp tool to pull off the worn gasket and slip a n...

Page 8: ...d and if necessary replaced or corrected Symptom Corrective action Rubber tube connector is loose Rubber tube connector is worn or damaged Piston sticks or slip too easily One way valve s on the pump...