Models 31820-Series 31821-Series - Jabsco - #4

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Flow in U.S. GPM (LPM) Total Pressure in PSI (bar) Amps 1 (3.8) 0 3 (11.4) 4 (15.1) 2 (7.6) 70 16 12 8 6 4 2 0 60 50 40 30 20 10 0 (4) (3) (2) (1) 12 & 24 VDC 12 VDC 24 VDC Amps Pressure 9 1/2 (241.0) 2 7/16 (62.0) 2 (50.8) 4 3/8 (111.0) 3 11/16 (93.7) 3 15/16 (100.0) 2 7/16 (61.9) 7/32 (5.6) 3 1/2 (88.9) 4X Ø3/16 MOUNTING HOLES 10 5/16 (100.0) 2 7/16 (62.0) 2 (50.8) 4 3/8 (111.0) 3 1/2 (88.9) 4X Ø3/16 MOUNTING HOLES 3 11/16 (93.7) 3 15/16 (100.0) 2 7/16 (61.9) 7/32 (5.6) DIMENSIONS Inches (millimetres) 31820 31821 TROUBLESHOOTING PULSATING FLOW – PUMP CYCLES ON AND OFF • Restricted pump delivery. Check discharge lines, fittings and valves for undersizing or clogging. FAILURE TO PRIME – MOTOR OPERATES, BUT NO PUMP DISCHARGE • Restricted intake or discharge line. • Air leak in intake line. • Punctured pump diaphragm. • Debris under flapper valves. • Crack in pump housing. MOTOR FAILS TO TURN ON • Loose wiring connection. • Pump circuit has no power. • Blown fuse/Thermal Protector Tripped. • Pressure switch failure. • Defective motor. PUMP FAILS TO TURN OFF AFTER ALL VALVES ARE CLOSED • Empty water tank. • Punctured pump diaphragm. • Discharge line leak. • Defective pressure switch. • Insufficient voltage to pump. • Debris under flapper valves. LOW FLOW AND PRESSURE • Air leak at pump intake. • Accumulation of debris inside pump and plumbing. • Worn pump bearing (excessive noise). • Punctured pump diaphragm. • Defective motor. Pumps have thermal overload protected motors. The motor will automatically shut off as temperature rises due to an overload condition. If the motor shuts off in this manner, close all nozzles, faucets or valves. After a cooling off period, the pump will automatically re-start. PERFORMANCE CURVES THE PRODUCTS DESCRIBED HEREIN ARE SUBJECT TO THE JABSCO ONE YEAR LIMITED WARRANTY, WHICH IS AVAILABLE FOR YOUR INSPECTION UPON REQUEST. Copyright 2005, ITT Industries Printed in U.S.A. All Rights Reserved Form: 43000-0735 Rev. B 08/2005 www.jabsco.com U.S.A. Jabsco 20 Icon Foothill Ranch, CA 92610 Tel: 949.859.4945 Fax: 949.859.1153 UNITED KINGDOM Jabsco Bingley Road, Hoddesdon Hertfordshire EN11 OBU Tel: +44 (0) 1992 450145 Fax: +44 (0) 1992 467132 CANADA Fluid Products Canada 55 Royal Road Guelph, Ontario N1H 1T1 Tel: 519 821.1900 Fax: 519 821.2569 JAPAN NHK Jabsco Company Ltd. 3-21-10, Shin-Yokohama Kohoku-Ku, Yokohama, 222 Tel: 045.475.8906 Fax: 045.475.8908 GERMANY Jabsco GmbH Oststrasse 28 22840 Norderstedt Tel: +49-40-53 53 73 -0 Fax: +49-40-53 53 73 -11 ITALY Jabsco Marine Italia Via Tommaseo, 6 20059 Vimercate, Milano Tel: +39 039 685 2323 Fax: +39 039 666 307