Boiler Control Replacement Parts

Transcription

1 Low Water Cut-Offs Float Type Series 6 Low Water Cut-Offs Series 6 Replacement Head Mechanisms For Repl. Head Part Weight Series Model No. Number Description lbs. (kg) 6-HD Head mechanism 3.5 (.6) 6 or Head mechanism.5 (0.7) Head mechanisms include a gasket and bolts. Part Catalog Weight Key Number Number Description lbs. (kg) Model 6-HD CO- Head Gasket 0. (0.5) Gasket 0. (0.5) SA67- Float & Bellows Assembly 0.3 (.4) Switch 0.5 (.3) M Switch w/manual Reset 0.5 (.3) MV Switch for Millivolt Service 0.5 (.3) Model

2 Low Water Cut-Offs Float Type For Hot Water Boilers Series 63 Low Water Cut-Offs Series 63 Replacement Head Mechanisms For Repl. Head Part Weight Model Model No. Number Description lbs. (kg) B 63-BM 63-M 63-HD 4600 Head mechanism 7.0 (3.) w/ No. switch 63-M-HD HD w/manual reset 7.0 (3.) Model 63-HD Head mechanisms include a gasket and bolts. (shown on page 9) Item Part Model Weight Model 63-M-HD 0000 Switch.0 (0.5) 000 -M Switch w/manual reset.0 (0.5) SA63-5 Bellows assembly.5 (7.3) CO- Gasket 0. (.05) SA63-30 Float.0 (0.5) CO- Head gasket 0. (.05) CO-06 Cam 0. (.05) 8

3 Low Water Cut-Offs Float Type For Hot Water Boilers Series 63 (continued) Low Water Cut-Offs

4 Low Water Cut-Offs Float Type For Hot Water Boilers Series 64 Low Water Cut-Offs Replacement Head Mechanisms For Repl. Head Part Weight Series Model No. Number Description lbs. (kg) HD Head mechanism 4.0 (.8) 64-A Head mechanisms include a gasket and bolts. Series 64 (shown on page ) Item Part Model Weight SA64-30 Float assembly.0 (0.5) CO- Head gasket 0. (.05) SA64- Bellows assembly 0.3 (.4) (includes item ) Model 64-A Gasket 0. (.05) Switch 0.5 (.3) M No. w/manual reset 0.5 (.3) MV No. for Millivolt service 0.5 (.3) 8* MA-59 Quick hook-up fittings 4.5 (.0) (includes item 8, 9, 0) 9* SA59-4 Upper quick hook-up.7 (.77) Model 64-HD 0* SA59-4 Lower quick hook-up.7 (.77) * SA59-7 Black Y assembly.3 (.0) *Available for 64-A models only 0

5 Low Water Cut-Offs Float Type For Hot Water Boilers Series 64 (continued) Low Water Cut-Offs

6 Low Water Cut-Offs Float Type For Hot Water Boilers Series 764 Low Water Cut-Offs Replacement Head Mechanisms For Repl. Head Part Weight Series Model No. Number Description lbs. (kg) HD Head mechanism 4.0 (.8) Head mechanisms include a gasket and bolts. Series 764 (shown on page 3) Model 64-HD Item Part Model Weight SA64-30 Float assembly.0 (0.5) CO- Head gasket 0. (.05) SA64- Bellows assembly 0.3 (.4) (includes item ) Gasket 0. (.05) Switch 0.5 (.3) M No. w/manual reset 0.5 (.3) MV No. for Millivolt service 0.5 (.3)

7 Low Water Cut-Offs Float Type For Hot Water Boilers Series 764 (continued) Low Water Cut-Offs

8 Low Water Cut-Offs Float Type Series 67 Low Water Cut-Offs Replacement Head Mechanisms For Repl. Head Part Weight Model Model No. Number Description lbs. (kg) LQHU Head mechanism.5 (0.7) Series G 6667MV for Millivolt.5 (0.7) service (shown on page 5) Item Part Model Weight Model 67-LQHU (without quick hook-up fittings) SA66-35 Upper tube assembly.0 (0.5) MA559 Quick hook-up fittings.5 (.) Gasket 0. (.05) SA67- Float and bellows assembly.0 (0.5) Switch 0.5 (.3) MSwitch w/manual reset 0.5 (.3) Model MV No. for Millivolt service 0.5 (.3) B Blow-down valve 0.5 (.3) Blow-down valve gasket 0. (.05) Model 6667MV 4

9 Low Water Cut-Offs Float Type Series 67 (continued) Low Water Cut-Offs Model

10 Low Water Cut-Offs Float Type Series 767 Low Water Cut-Offs Replacement Head Mechanisms For Repl. Head Part Weight Model Model No. Number Description lbs. (kg) Head mechanism.5 (0.7) Series 767 Item Part Model Weight Gasket 0. (.05) SA67- Float and bellows assembly.0 (0.5) Switch 0.5 (.3) MSwitch w/manual reset 0.5 (.3) MV No. w/millivolt service 0.5 (.3) B Blow-down valve 0.5 (.3) Blow-down valve gasket 0. (.05) Model 6667 Model

11 Low Water Cut-Offs Float Type Series 69 Low Water Cut-Offs Replacement Head Mechanisms For Repl. Head Part Weight Model Model No. Number Description lbs. (kg) J 69 Series Head mechanism.5 (0.7) MV-P 6667-MV w/millivolt service.5 (0.7) 369-MV Item Part Model Weight Model SA69-04 Shield assembly 0.5 (.3) Gasket 0. (.05) O-ring.0 (.004) O-ring.0 (.004) Gasket 0. (.05) Switch 0.5 (.3) Model 6667MV M Switch w/manual Reset 0.5 (.3) MV Switch for Millivolt Service 0.5 (.3) SA67- Float & Bellows Assembly 0. (.05)

12 Combination Low Water Cut-Off/Pump Controllers Series 4 and 4S Low Water Cut-Off/Pump Controllers Series 4S Replacement Head Mechanisms For Repl. Head Part Weight Model Model No. Number Description lbs. (kg) 4S 4S-HD 950 Head mechanism 7.5 (3.4) Head mechanisms include a gasket and bolts. (shown on page 9) Item Part Model Weight Model 4S-A CO- Head gasket 0. (.05) * MA-59 Quick hook-up fittings 6.0 (.7) (includes items 4, 5, 6) 3* SA59-4 Upper quick hook-up fittings.7 (.77) 4* SA59-4 Lower quick hook-up fittings.7 (.77) 5* SA59-7 Black Y assembly 3.0 (.4) SA50-06R Bellows Assembly 0.4 (.8) * Available for 4S-A models only. Replacement Switch Information Replacement Switch Assemblies For Series 4S Model 4S-HD IMPORTANT: Snap switches must be replaced as an assembly. We recommend complete head replacement to eliminate the need for field replacement of the switch assembly. Series 4 & 4S Replacement Switch Assemblies are not interchangeable and must be selected and ordered for the specific control model(s) on which they will be installed. For Repl. Switch Part Weight Model Model No. Number Description lbs. (kg) 4S SWA-4S Snap-action 0.5 (.3) switch assembly Model SWA-4S 8

13 Combination Low Water Cut-Off/Pump Controllers Series 4 and 4S (continued) Low Water Cut-Off/Pump Controllers

14 Combination Low Water Cut-Off/Pump Controllers Series 93 & 93 Low Water Cut-Off/Pump Controllers Replacement Head Mechanisms For Part Repl. Head Weight Model Number Model No. Description lbs. (kg) 93, HD Head mechanism 6 (7.5) B-HD Head mechanism with 7B switch 6 (7.5) M-HD Head mechanism, manual reset 6 (7.5) B-M-HD Head mechanism with 7B switch, 6 (7.5) manual reset (shown on page ) Item Part Model Weight Series 93-HD HDLS Head w/o switch 5.0 (6.8) SA9-60 Float (includes item 3) 0.7 (.3) Gasket 0. (.05) Electric switch 3.5 (.6) M No. 5 w/manual reset 3.5 (.6) B Electric switch/ 4.0 (.8) proportioning control B-M No. 7B w/manual reset 4.0 (.8) Series 93 #5 Switch SA9-30B Burner Switch 0. (.05) Contact Assembly (Red dot on terminal panel) (Includes A terminal panel) SA9-30P Pump Switch 0. (.05) Contact Assembly (Blue dot on terminal panel) (Includes A terminal panel) #7B Switch SA9-30B Burner Switch 0. (.05) Contact Assembly (Red dot on terminal panel) (Includes A terminal panel) B-R Resistor/Slide 0. (.05) Wire Assembly SA7-30 Terminal Panel 0.5 (.3) Series 93 0

15 Combination Low Water Cut-Off/ Pump Controllers Series 93 & 93 (continued) Low Water Cut-Off/Pump Controllers A 3 3 7B Switch A A 5 Switch

16 Combination Low Water Cut-Off/Pump Controllers Series 94 & 94 Low Water Cut-Off/Pump Controllers Replacement Head Mechanisms For Part Repl. Head Weight Model Number Model No. Description lbs. (kg) 94, HD Head mechanism (9.5) M-HD Head mechanism, manual reset (9.5) B-HD Head mechanism with 7B switch (9.5) B-M-HD Head mechanism with 7B switch, (9.5) manual reset Series 94-HD (shown on page 3) Item Part Model Weight HDLS Head w/o switch 5.0 (6.8) SA9-60 Float (includes item 3) 0.7 (.3) Gasket 0. (.05) Electric switch 3.5 (.6) M No. 5 w/manual reset 3.5 (.6) B Electric switch/ 4.0 (.8) proportioning control Series B-M No. 7B w/manual reset 4.0 (.8) #5 Switch SA9-30B Burner Switch 0. (.05) Contact Assembly (Red dot on terminal panel) (Includes A terminal panel) SA9-30P Pump Switch 0. (.05) Contact Assembly (Blue dot on terminal panel) (Includes A terminal panel) #7B Switch SA9-30B Burner Switch 0. (.05) Contact Assembly (Red dot on terminal panel) (Includes A terminal panel) B-R Resistor/Slide 0. (.05) Wire Assembly SA7-30 Terminal Panel 0.5 (.3) Series 94

17 Combination Low Water Cut-Off/ Pump Controllers Series 94 & 94 (continued) Low Water Cut-Off/Pump Controllers A 3 3 7B Switch A A 5 Switch 3

18 Low Water Cut-Off/Pump Controllers Series 50, 50S Series 57, 57S The Series 50S is available as an alternative for Series 50 LWCO controls that contain mercury switches. Please keep in mind that in a replacement or repair situation you do not have to change out the entire control. A head replacement (i.e. 50S-HD) is all that s required. 50 or 50S Float Chamber Body 57 or 57S Water Column Body There may be additional letters such as B, R, RL, etc. in the sales catalog designation of the control. These additional letters designate tapping locations and sizes which have no affect on which head mechanism to purchase. All head mechanisms are interchangeable and can be installed on any body. MD Models The MD model should be used as a replacement head when the boiler operating pressure is less than 50 psi. These were created to provide a control with factory settings to compensate for the narrowing of setpoints. The larger differential between pump on and burner off reduces the potential for nuisance burner shutdown. It is important to understand that there are requirements that lead to the best performance of ALL level controllers and LWCO s: Use of properly-sized pump starters/relays in the pump control circuitry Pumps that are balanced to the system requirements Equalizing piping, per the boiler manufacturer s recommendations, to properly sense the boiler water level Industry accepted blowdown piping to provide best cleaning action of the control chamber, float linkage mechanism and/or probes Proper periodic blowdown of the boiler controls. Proper chemical treatment of boiler water. Annually cleaning and careful examination of the float mechanism, probes, and electrical switches or controls. More frequent cleaning may be required for exceptionally dirty steam systems. 4

19 Low Water Cut-Off/Pump Controllers Series 50, 50S Series 57, 57S (continued) Replacement Head Mechanisms For Part Repl. Head Weight Model Number Model No. Description lbs. (kg) 50S-HD Head mechanism.0 (5.0) 50S-M-HD S-HD w/manual reset.0 (5.0) 50S-MD-HD S-HD w/maximum differential.0 (5.0) 50S-M-MD-HD S-HD w/manual reset.0 (5.0) and maximum differential 58S-HD 7860 Head mechanism.5 (5.7) 58S-M-HD S-HD w/manual reset.5 (5.7) Series 50S-HD 59S-HD 7870 Head mechanism.0 (5.7) 5

20 Low Water Cut-Off/Pump Controllers Series 50, 50S Series 57, 57S IMPORTANT: Snap switches must be replaced as an assembly. We recommend complete head replacement to eliminate the need for field adjustment of the switch assembly. Series 50S and 57S replacement switch assemblies are not interchangeable with Series 50 and 57 mercury switch controls. Note: Manual reset models with date code 03K (October 003) or older require the purchase of a new head. Replacement Switch Assemblies for Series50S and 57S For Repl. Switch Part Weight Model Model No. Number Description lbs. (kg) All 50S & 57S Units Except MD Models SWA-50S 3046 Snap-action 0.5 (.3) switch assembly Model SWA-50S Model SWA-50S-MD All 50S & 57S MD Models SWA-50S-MD Snap-action 0.5 (.3) switch assembly for maximum differential models Model SWA-58S All 58S Models SWA-58S Snap-action 0.5 (.3) switch assembly for Model 58S All 59S Models SWA-59S Snap-action 0.5 (.3) switch assembly Switch assemblies include a mounting bracket and color-coded terminal connection wires. Model SWA-59S 6

21 Low Water Cut-Off/Pump Controllers Series 50, 50S Series 57, 57S (continued) 7 Series 50 Head Gasket and Casting Refer to page 6 for Switch Assemblies R 3 RAISED FLANGE GASKET CATALOGUE NO. 50-4H P.N RAISED FLANGE This new gasket, specifically designed for the Raised Flange Heads, may be used. 4 FLAT FLANGE GASKET CATALOGUE NO P.N FLAT FLANGE This gasket must be used on the Flat Flange Heads. Series 50S Item Model Part Weight SA50-06R Bellows assembly 0.4 (.8) SA Float & rod.0 (0.5) H Head gasket for raised 0.5 (.3) face flange head, 8 holes Head gasket for flat 0.5 (.3) face flange head, no holes Cover.435 (.9) 7

22 Low Water Cut-Off/Pump Controllers Series 50, 50S Series 57, 57S (continued) Item Model Part Weight EA-57-S Short electrode for 57S-RBP 0.5 (.3) EA-57-L Long electrode for 57S-RBP 0.5 (.3) Model 57S-RBP 8

23 Low Water Cut-Off/Pump Controllers Series 575 Item Model Part Weight 50E-CU Control unit, automatic reset.07 (.96) PA-750-HP 7639 High Pressure Probe 0.5 (0.3) 3 PS--SS Sensing Probe Rod-" 0.5 (0.3) 3 9