Fluke Calibrator, 4353218 Data Sheet

63 

Caution 

Clean the Product with a soft cloth dampened with water 
or water and mild soap. 

Occasionally, the Product may not work properly due to 
dirt or other contamination of the internal valve assembly. 
Use the subsequent procedure to clean the valve 
assembly. If this procedure does not correct the problem, 
a repair kit can be ordered. See the “User-Replaceable 
Parts” section. 

1.  With a small screwdriver, remove the two valve 

retention caps located in the battery compartment 
area (see Figure 12). 

2.  After the caps have been removed, gently remove 

the spring and ring assembly. 

3.  Set aside the valve assemblies in a safe area and 

clean out the valve body with a cotton swab soaked 
in IPA (isopropyl alcohol). 

4.  Repeat the process several times with a new cotton 

swab each time until there is no evidence of 
contamination or dirt. 

5.  Operate the pump handles several times and 

recheck for contamination. 

6.  Clean the O-ring assembly and the O-ring on the 

retention caps with IPA and inspect the O-rings 
closely for any damage or excessive wear. 
Replacements are included in the repair kit, if 
necessary. 

7.  Inspect the springs for wear or loss of tension. They 

should be approximately 8.6 mm long in the relaxed 
state. If shorter, they may not provide sufficient seal 
tension. Replace if necessary. 

8.  Once all parts have been cleaned and inspected, 

reinstall the O-ring and spring assembly into the 
valve body. 

9.  Reinstall the retention caps and gently tighten each 

cap. 

10.  Seal the output port and operate the pump to at least 

50 % of capacity. 

11.  Release the pressure and repeat several times to 

ensure that the rings seat properly.