SANDPIPER HDB2 - Manual (Page 11)

hdb2smdl3sm-rev0614 Model HDB2 Page 9
RECOMMENDED WARREN RUPP ACCESSORIES
TO MAXIMIZE PUMP PERFORMANCE:
• Tranquilizer ® Surge Suppressor: For nearly pulse-free flow.
• Warren Rupp Filter/Regulator: For modular installation and service
convenience.
• Warren Rupp Speed Control: For manual or programmable process
control. Manual adjustment or 4-20mA reception.
For more detailed information on these accessories,
contact your local Warren Rupp Factory-Authorized Distributor,
or Warren Rupp corporate headquarters.
Available Service Kits
Part No. Description
476-247-000 Air End Kit
Seals, O-Rings, Gaskets, Sleeve and Spool Set, Plungers,
Bushings, Pilot Valve Assembly
476-245-354 Santoprene Diaphragms, Check Balls, Gaskets, Seals, Nitrile O-Rings
476-245-360 Nitrile Diaphragms, Weighted Check Balls, O-Rings, Gaskets,
Seals, Wear Pads
476-245-364 EPDM Diaphragms and Weighted Check Balls, Gaskets, Seals,
Wear Pads, Nitrile O-Rings
476-245-365 Neoprene Diaphragms and Weighted Check Balls, Gaskets, Seals,
Wear Pads, Nitrile O-Rings,
476-245-633 FKM Diaphragms, PTFE Check Balls, Gaskets and O-Rings,
Seals, Wear Pads
476-043-635 PTFE Overlay Diaphragms, Check Balls, Gaskets and O-Rings,
Seals, Neoprene Backup Diaphragm
TROUBLESHOOTING
PROBLEM: Pump cycles but will not pump. (Note: higher suction lifts require faster cycling speed for priming.)
POSSIBLE CAUSES:
A. Air leak in suction line.
B. Excessive suction lift.
C. Check valve not closing.
D. Leakage at joint of suction manifold or elbow flange.
E. Suction line plugged.
F. Diaphragm ruptured.
PROBLEM: Pump will not cycle. (Note: Always disconnect air supply to relieve air pressure before disassembling
any portion of pump.)
POSSIBLE CAUSES:
A. Discharge hose or line plugged, or discharge head requirement greater than air supply pressure.
(Disconnect discharge line to check.)
B. Spool in air distribution valve not shifting. (Remove end cap and check spool — must slide freely.)
C. Diaphragm ruptured. (Air will escape out discharge line in this case.)
D. Blockage in diaphragm chamber preventing movement. (Shut off air supply and reopen after pressure is relieved.)
E. Plugged or dirty exhaust muffler.
PROBLEM: Uneven discharge flow. (Indicates one chamber not operating properly.)
POSSIBLE CAUSES:
A. Check valve not sealing properly in one chamber.
B. Diaphragm failure in one chamber.
C. Air leak at suction manifold joint or elbow flange one side.
D. Plugged or dirty muffler.
For additional information, see the Warren Rupp Troubleshooting Guide.
WARRANTY:
This unit is guaranteed for a period of five years against defective material and workmanship.