SANDPIPER ST25 - Manual (Page 11)

st1dl5sm-rev0614 Models ST1 & ST25 Page 9
C. Low flow rate and slow cycling rate indicate restricted flow through the discharge line.
Low flow rate and fast cycling rate indicate restriction in the suction line or air leakage
into suction.
D. Unstable cycling indicates improper check valve seating on one chamber. This
condition is confirmed when unstable cycling repeats consistently on alternate exhausts.
Cycling that is not consistently unstable may indicate partial exhaust restriction due
to freezing and thawing of exhaust air. Use of an anti-freeze lubricant in an air line
lubricator should solve this problem.
E. Incorrect driver fluid level or unpurged air in the chamber can cause poor
performance.
For additional information, see the Warren Rupp Troubleshooting Guide.
WARRANTY
This pump is warranted for a period of five years against defective material and
workmanship. Failure to comply with the recommendations stated in this manual voids
all factory warranty.
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.