Grundfos TPE3 Pumps
Spare Parts for TPE3 Range Pumps
Product Summary
Genuine and compatible spare parts for the Grundfos TPE3 variable speed in-line pump, used across Australia in commercial buildings for HVAC chilled and heating water, condenser water and district energy duties. Every TPE3 from the TPE3 32 to the 22 kW TPE3 100 shares the same build (single impeller, mechanical shaft seal, IE5 MGE motor with built-in drive and a combined differential pressure and temperature sensor), so tick what you need and we’ll match the exact kit to your nameplate (e.g. TPE3 80-250-S).
Spare Parts List
✓ Tick the parts you need. Grundfos TPE3 service kits are matched to pump size, impeller, E-motor and shaft seal code, so your nameplate model is all we need to get them right. Not sure which items? Add a photo of the nameplate and we’ll work out the kit for you.
| Select | Wear / Service Item | Function & when to replace |
|---|---|---|
| Common Service Kits | ||
| Shaft Seal Kit | Mechanical shaft seal with its fitting parts, matched to your seal code (standard BQQE: rubber bellows, SiC/SiC, EPDM; other faces and elastomers to order). Replace at the first sign of leakage at the motor stool. | |
| Impeller Kit | Composite or cast iron impeller for your model with its fixing parts. Replace if eroded, cracked or damaged by debris. | |
| O-ring Kit | The O-ring between pump housing and motor stool, plus vent screw seal, in EPDM or FKM. Renew whenever the pump is opened. | |
| Neck Ring Kit | The neck ring that seals the impeller eye in the pump housing. A worn ring costs flow and head and makes the drive work harder; renew it at any rebuild. | |
| Sensor Kit | The built-in combined differential pressure and temperature sensor with cable and plug. Replace if the pump reports a sensor fault or the readings are wrong. | |
| Other Core Parts | ||
| Replacement E-Motor / Drive | Grundfos MGE motor with integrated frequency converter, matched to your kW (0.75 to 22 kW across the range) and 3 × 380–500 V supply. Replace if the drive electronics or motor have failed. | |
| CIM Communication Module | Plug-in interface for BMS communication (e.g. BACnet MS/TP, Modbus RTU, Profibus DP, LonWorks). Fit or replace to connect the pump to your building management system. | |
| Motor Stool / Pump Head | The cast iron motor stool that carries the E-motor and houses the shaft seal. Replace if cracked or damaged at the seal seat. | |
| Pump Housing | In-line cast iron pump housing with DIN flanges, matched to your size. Replace if cracked, corroded or eroded. | |
| Base Plate | Mounting base for floor installation; factory fitted on 11 kW and above and available for most smaller sizes. | |
| Complete Replacement Pump | When a rebuild doesn’t stack up, we quote a like-for-like TPE3 from the model on your nameplate. | |
How we confirm the exact part: Grundfos TPE3 kits depend on pump size, maximum head, impeller type, shaft seal code and the MGE motor fitted. Your nameplate carries all of it, in the model (e.g. TPE3 80-250-S-A-F-A-BQQE) and the product number. Tick the items above and add a photo of the pump and motor nameplates, and we’ll confirm the correct part and price for your exact pump.
Models
Spare parts are available for every TPE3 size in the current Grundfos Australia range. In the model (e.g. TPE3 80-250), 80 is the port size (DN) and 250 the maximum head in decimetres.
Models & Key Specifications
| Size | Models (max. head, dm) | Motor (kW) | Impeller | Pressure rating |
|---|---|---|---|---|
| TPE3 32 | 200, 250, 330 | 0.75–1.5 | Composite | PN 6/10 or 16 |
| TPE3 40 | 200, 240, 310, 470, 530 | 1.1–7.5 | Composite / cast iron | PN 6/10 or 16 |
| TPE3 50 | 200, 240, 370, 450, 560, 700, 730 | 1.5–15 | Composite / cast iron | PN 6/10 or 16 |
| TPE3 65 | 200, 280, 430, 580, 680 | 2.2–11 | Composite / cast iron | PN 6/10 or 16 |
| TPE3 80 | 120, 180, 210, 250, 310, 340, 440, 520, 560, 570 | 1.1–22 | Composite / cast iron | PN16 |
| TPE3 100 | 130, 160, 230, 260, 350, 460, 540, 570 | 2.2–22 | Cast iron | PN16 |
| TPE3 125 | 160, 180, 290, 380, 430 | 5.5–18.5 | Cast iron | PN16 |
All sizes: liquid temperature −25 °C to +120 °C (clean water / glycol), ambient −20 °C to +50 °C, DIN flanges, standard shaft seal BQQE (others on request). IE5 MGE motor with built-in frequency converter, 3 × 380–500 V 50/60 Hz, IP55, built-in differential pressure and temperature sensor, Grundfos GO and wireless multi-pump function.
Troubleshooting
Pump will not start
Likely cause: no supply, a tripped motor protection or fuse, a drive fault or stop signal, or a seized pump. Action: check the supply and reset the protection; check the display and alarm log; with the power isolated, turn the shaft by hand. A pump that won’t turn needs inspection of the impeller, wear rings and seal.
Motor protection trips repeatedly
Likely cause: overload from running well right of the duty curve (low system resistance), a rubbing impeller, failing bearings or a phase fault. Action: check the voltage on all phases and the motor current; throttle to the duty point; inspect the impeller and bearings; confirm the impeller diameter suits the duty.
Low flow or head
Likely cause: worn wear rings or impeller, air in the pump, a blocked suction strainer or impeller, wrong rotation, or the controller set point too low. Action: vent the pump and check the suction side; clean the strainer and impeller; confirm rotation; check the set point and control mode; if output still falls short, replace the neck ring kit and impeller kit.
Noise or vibration
Likely cause: cavitation (insufficient NPSH), air in the pump, a damaged or out-of-balance impeller, worn bearings, or pipe strain on the flanges. Action: check suction pressure and NPSH; vent the pump; inspect the impeller and bearings; support the pipework so the pump isn’t carrying it.
Leaking at the shaft seal
Likely cause: worn or damaged seal faces, often from dry running, abrasive particles or a seal material that doesn’t suit the liquid. Action: replace the shaft seal kit and renew the O-rings. Never run a TPE3 dry: the seal relies on the pumped liquid for cooling and lubrication.
Leaking at the pump housing
Likely cause: a perished O-ring between the pump housing and motor stool, a failed flange gasket, or a cracked housing. Action: fit the O-ring and gasket kit and tighten the stool bolts evenly to Grundfos specification; replace the housing if it is cracked.
Pump shows an alarm or sensor fault
Likely cause: a failed or disconnected sensor, a supply fault, or an internal drive fault. Action: read the alarm code on the display or with Grundfos GO; check the sensor cable and plug; if the sensor reading is wrong or missing, replace the sensor; persistent drive faults need the E-motor checked.
Request for Quotation
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Not sure which parts? Just send a photo of the nameplate or part below.