See the below web page to view or download the Service Manual for the 6270A Pressure Calibrator (updated May 2018 with additional CPS-20M maintenance information). It also includes information on the Contamination Prevention System (CPS-20M) and the Pressure Measurement Module Calibration Kit (PMM-CAL-KIT-20M). At the back of the manual are drawings with part number call-outs.
Sample page from Service Manual:
See the pdf attachment at the end of this article for a useful schematic from the Service Manual (with more notes added to it).
*** Known changes to above Service Manual document:
- PMM O-ring 1785510 has been changed to 4621608 (same o-ring as PCM)
- Front Panel Bezel with Decal 4815334 is not available, but consists of these two parts that are available:
Part Number: 4488588
Description:6270A-8001,DECAL, CHASSIS, FRONT PANEL, MODEL 6270A
Part Number: 4380004
Description :6270-2013,FRONT PANEL BEZEL
A separate article is here for additional information on maintenance of the CPS,
6270A & 2271A - CPS-20M Maintenance
6270A Operation Manual (updated April 2018), Programmer's Manual and Specifications Manual are available on this page,
Here is information on a User Seal Kit for 6270A
Part Number: 4584797
Description: 6270-SK-USER,6270 SEALS, USERS KIT
It includes 10 black o-rings for PCM and PMM, and 12 white/clear o-rings for PCM and PMM. These are also available separately.
Part Number, Description
1785485, 759270-501,O RING -008 70 DUROM 0.176 ID .070 W BUNA Y
4621608, O-RING,AS568A-006,.114 IN. ID,.254 IN. OD,.070 IN. W,POLYURETHANE,A90 DURO
Part Number: 4815365, Description: 6270-FRONT PANEL SRV,SERVICE, 6270-FRONT PANEL ASSEMBLY WITH DISPLAY
Port Manifold: Replacement Manifold Kits are available that include the manifold, 2 guide bushings PN 4404134 and 5 o-rings PN 1785485.
Part Number: 5032803, Description: MNFLD-8270-NPT,REPLACEMENT MANIFOLD, 8270A, NPT
Part Number: 5032815, Description: MNFLD-8270-BSP,REPLACEMENT MANIFOLD, 8270A, BSP
Part Number: 5032826, Description: MNFLD-8270-SAE,REPLACEMENT MANIFOLD, 8270A, SAE