Xylem MM 244B Series 42S Replacement Snap Switch Assembl Manual do Utilizador

For Series 42S Low Water Cut-Off/Pump Controllers (All Models)Replacement Snap Switch AssemblySWA-42S• Before using this product read and understand i

10RULERCASTLINELEVEL3"(76.2mm)2"(50.8mm)1"(25.4mm)CastingCut-OffLine1"(25.4mm)TOPSECTION 3 - Checking Switch Settings at 0 Pressur

11B6. Reattach the cover (B).OFFON7. Turn the boiler on.2"(50.8mm)1"(25.4mm)1"(25.4mm)3"(76.2mm)CastingCut-OffLineSwitch Level Rul

Xylem Inc. 8200 N. Austin Avenue Morton Grove, Illinois 60053 Phone: (847) 966-3700 Fax: (847) 965-8379www.xyleminc.com/brands/mcdonnellmillerMcDonnel

2Verify that you have the Correct Replacement Switch Assembly ModelModel SWA-42SP/N 310488IMPORTANT:• Installation of an incorrect switch-assembly cou

Pump Circuit Rating (Amperes)Voltage Full Load Locked Rotor Pilot Duty120 VAC 7.4 44.4345 VA at240 VAC 3.7 22.2120 or 240 VACApproximateDistance Above

4B3. Remove the cover (B).LOW WATERCUT-OFFTERMINALSBURNERSWITCHPUMPSWITCHPUMP CIRCUITTERMINALS4. Mark and remove the pump switchand burner/alarm switc

5BA5a. Locate the actuator assembly (A) and thetwo fillister head screws (B) which secureit to the bearing of the control.b. Clean the inspection lacq

6CC8a. Install the new switch bracket assemblyinto the junction box in the same orienta-tion as the old switch bracket assembly(i.e. with arrows on th

7SECTION 2 - Checking Switch Settings and Adjusting Switch Setpoints atOperating PressureIMPORTANT: All switches have fixed differentials.Adjustment o

FADD ADHESIVE HERE8BURNERSET SCREWBURNERSWITCHE4b. If the cut-off point does not match the oneshown in chart for the control (page 3) asmeasured on th

9PUMPONPUMPOFFBURNERCUT-OFF LEVELAT CAST LINEHADD ADHESIVE HEREGPUMP SET SCREWPUMP SWITCH5b. If the Pump Off point does not match theone shown in char