31
Model 288A Differential Pressure Indicating Switch Section 4
Table 4.1—Parts List, Model 288A Indicating Switch
Item Description Part No. Per Unit
29 Switch and Plate Assembly:
(Tefzel Insulation-Radiation Resistant)
see also item 26
A/R
High, SPDT 9A-CS666-1201B-N
High DPDT 9A-CS401-0185B-N
High Relay 9A-CS666-0291B-N
High #1, Independently Adjustable* 9A-CS666-0288B-N
High #2, Independently Adjustable* 9A-CS666-0289B-N
*Note: If 3 or 4 independently adjustable switches are used, High #1 is
installed in the upper right position, and High #2 is installed in the lower left
position.
30 Low Alarm, Drive Plate Assembly 9A-C0288-0026B A/R
31 Low Switch, Switch Adjustment Index Assy 9A-C0288-0028B A/R
32 High Alarm, Drive Plate Assembly 9A-C0288-0027B A/R
33 High Switch, Switch Adjustment Index Assy 9A-C0288-0029B A/R
34 Washer, Spring (1 per switch) 9A-C0257-0019C A/R
35 Screw, Lock (1 per switch) A/R
Switch #1 and #2 9A-C0317-0012C
Switch #3 and #4 (not shown) 9A-CS469-0045Z
36 Washer, 1/2 OD x 0.14 ID, SST (1 per switch) 9A-C0317-0019C A/R
37 Grip Ring (1 per switch) 9A-C0087-0011T A/R
38 Link Plate (2 required when both low and high
switches are used)
9A-C0288-1205C A/R
39 Strap 9A-C0288-0017C 1
40 Screw, 3-48 x 3/16, SST, Binding Hd.
(3 per switch)
9A-C0117-0007J A/R
41 Screw, 8-32 x 1/4, SST, Binding Hd. (1 per
switch)
9A-C0117-0016J 1
42 Retaining Ring (1 per switch) 9A-C0087-0015T A/R
* Recommended spare part
** If the scale plate is not identifi ed with an SCR number, provide the following infor-
mation:
Square root or linear graduations,
Scale (e.g., 0-100, 25-0-100, etc.)
Number of graduations (linear scales only)
Data (e.g., PSI, bar, inches of water column, meter, etc.)
Additional Notes:
1. A/R indicates as required.
2. When ordering parts, specify serial number of instrument.
3. For 224 DPU parts, refer to Table A.4, page A-18.
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