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WHISPERFLO® VS WHISPERFLO® VST VARIABLE SPEED PUMP INSTALLATION AND USER'S GUIDE IMPORTANT SAFETY INSTRUCTIONS READ AND FOLLOW ALL INSTRUCTIONS SAVE THESE INSTRUCTIONS...
230 VAC charge even when there is no power to the unit. This guide provides installation and operation instructions for this pump. Consult Pentair with any questions regarding this equipment. • The pump is not submersible. Attention Installer: This guide contains important information about the •...
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IMPORTANT SAFETY INSTRUCTIONS TO MINIMIZE THE RISK OF INJURY DUE TO HAZARDOUS PRESSURE: STAND CLEAR OF PUMP SUCTION ENTRAPMENT HAZARD: AND FILTER DURING START UP. Circulation systems operate under high pressure. When • A properly installed and secured ANSI/ASME A112.19.8 approved anti- any part of the circulating system (i.e.
CUSTOMER SERVICE AND TECHNICAL SUPPORT Hours: 8:00 to 7:30 EST (5:00 - 4:30 PST) Call: (800) 831-7133 Visit: www.pentair.com Fax: (800) 284-4151 TABLE OF CONTENTS Important Safety Instructions ......Maintenance ............Cleaning the Pump Strainer Basket Introduction ............Motor Care...
RS-485 Automation Wiring Kit (P/N 356324z). See External Control via Digital Inputs, page 6. The pump can be externally controlled by most Pentair control systems via an RS-485 connection using the RS-485 Automation Wiring Kit (P/N 356324z). The pump address and other settings can be programmed from the pump's keypad.
USING THE DRIVE KEYPAD Before operating the pump for the first time, the pump’s internal clock and operational schedules must be programmed. Refer to Setting the Clock and Pump Address, page 8 and Programming Custom Schedules, page 9 for instructions regarding the programming of this pump for scheduled operation. The pump can be programmed and controlled from the drive keypad.
4. For most installations Pentair recommends installing 4. Be sure to install check valves when plumbing in a valve on both the pump suction and return lines parallel with another pump.
(GFCI) circuit The drive will operate on 2-Phase Line-Line-Ground breaker. electrical systems as well as Line-Neutral-Ground Note: Pentair offers a 2-Pole 20 Amp GFCI breaker systems. (P/N PA220GF). Wiring Bonding 1.
External Control via RS-485 TO WIRE FOR EXTERNAL CONTROL USING RS-485: These pumps can be controlled from certain Pentair 1. Route the communication cable from the Pump control systems, via an RS-485 signal, when paired with Com Port (Figure 5) to the control system wiring the RS-485 Automation Wiring Kit (P/N 356324z).
External Control via Digital Inputs When paired with either the RS-485 Automation Wiring Kit (P/N 356324z) or Digital Input Wiring Kit (discontinued), the pump can be externally controlled by digital input signals. Note: If the pump is manually stopped using the Start/Stop button, the pump will not run until the Start/ Stop button is pressed.
Using an External Input Signal When using an externally supplied low voltage signal for external control, input voltage must be within 5-30V AC/DC. The wiring kit's RED wire is only intended to carry the +5V output signal from the drive and will NOT be used. The +5V signal (RED wire) is output from the drive only and should never be wired to another power supply.
OPERATION Before operating the pump for the first time, the pump’s internal clock and operational schedules must be programmed by following the steps in this manual. Refer to Setting the Clock and Pump Address below and Programming Custom Schedules on page 9, for instructions regarding the programming of this pump for scheduled operation. Setting the Clock and Pump Address Using the Default Schedule When power is first connected to the pump the clock...
Programming Custom Schedules To customize your pump’s schedule, the pump must 5. Use “+” and “-” to adjust the SPEED 1 start time. be stopped. Ensure that the Start/Stop LED is not 6. Press “1”. SPEED 1 duration will display. The illuminated.
Operating the Pump While Running Speed Priorities (Non-External Control) For schedule duration settings, SPEEDs are If power is connected to the pump, pressing any of the prioritized as follows: SPEED 1 -> SPEED 2 -> following buttons referred to in this section could result SPEED 3.
Priming This pump is shipped with Priming mode ENABLED. The pump will ramp up to 3450 RPM when the pump is initially started. Before turning the pump ON: 1. Open filter air relief valve. 2. Open necessary valves. 3. Ensure return line is completely open and clear of any blockages. 4.
Programming Quick Clean Keypad Lockout The pump is equipped with a Quick Clean feature, which Keypad lockout will not prevent the motor can be engaged to temporarily run at higher or lower speeds from being stopped by pressing the Start/ ranging from 450 to 3450 RPM.
Factory Reset The drive can be reset to factory settings if necessary. Speed Duration Start Time A Factory Reset will erase all programmed settings (RPM) (Hours) (Time Clock) and schedules, except for the time of day. Be sure that it is necessary before performing a Factory SPEED 1 Reset, as the results are immediate.
MAINTENANCE DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer pot. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may cause serious personal injury.
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[ PAGE LEFT BLANK ] WHISPERFLO VS and WHISPERFLO VST Variable Speed Pump Installation and User’s Guide ® ®...
Refer to the Motor/Hydraulics Assembly Diagram, on the next page, for a parts breakdown of the pump. Always disconnect power to the pump at the circuit breaker before servicing the pump. Failure to do so could result in death or serious injury to service people, users or others due to electric shock.
Motor/Hydraulics Assembly Diagram MOTOR/DRIVE ASSEMBLY MOTOR/SEALPLATE BOLTS (x4) DIFFUSER SHAFT SEAL SEAL PLATE MOTOR SHAFT O-RING SEAL PLATE STRAINER POT IMPELLER DIFFUSER GASKET THROUGH-BOLTS (x2) SCREWS (x2) IMPELLER SCREW AND WASHER DIFFUSER STRAINER POT BOLTS (x4) Shaft Seal Replacement The Shaft Seal consists of two halves, a rotating spring seal and a fixed ceramic seal. The shaft seal may occasionally become damaged and require replacement.
Restarting the Pump Winterizing You are responsible for determining when freezing If pump is installed below the water level of the pool, conditions may occur. If freezing conditions are close return and suction lines prior to opening the expected, take the following steps to reduce the risk of strainer pot on pump.
TROUBLESHOOTING Diagnosing certain symptoms may require interaction with, or close proximity to, components that are energized with electricity. All servicing should be performed by a qualified service professional. Contact with electricity can cause death, personal injury, or property damage. Troubleshooting Chart Problem Possible Cause Corrective Action...
Troubleshooting Chart (cont.) Problem Possible Cause Corrective Action Pump runs without flow. Impeller is loose Ensure fan at the rear of pump is spinning. If so, disassemble pump (Pump Disassembly, page 16) and ensure impeller is correctly installed. Air in suction line or pump 1.
REPLACEMENT PARTS Item Description Item Description 357199 Lid Clamp 070927 Motor Foot 357151 070929 Insert, Motor Foot 357156 Lid, Chemical Resistant 071657z Screw, Motor Foot, 2 Req. 350013z O-ring, Lid 071406 Nut, Motor Foot, 2 Req. 070387z Strainer Basket 072183 Washer, Motor Foot, 2 Req.
TECHNICAL DATA Performance Curves QUICK CLEAN / 3450 RPM QUICK CLEAN / 3450 RPM (230V) (115V) SPD 1 / 3000 RPM (115V / 230V) SPD 3 / 2200 RPM (115V / 230V) SPD 2 / 1400 RPM (115V / 230V) Volumetric Flow Rate in GPM Specifications and Dimensions Overall Ratings...
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NOTES WHISPERFLO VS and WHISPERFLO VST Variable Speed Pump Installation and User’s Guide ® ®...
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