Irrigation Troubleshooting, Delivery and Collection Guide
Use this guide to identify the checks that normally matter before replacing irrigation equipment. Isolate electrical power and pressurised water before opening equipment. Pump, mains-voltage and complex controller faults should be handled by a suitably qualified technician.
Irrigation troubleshooting table
| Symptom | Likely checks | Do not assume |
|---|---|---|
| Rotor does not reach its radius | Dynamic pressure, nozzle, filter/screens, zone flow, pipe loss and radius adjustment | A larger nozzle always solves low radius |
| Misting or fogging | Excess pressure, wrong nozzle range or damaged nozzle | More pressure always improves coverage |
| Uneven dry areas | Head spacing, blocked nozzle, mixed precipitation rates, wind and pressure variation | Longer run time corrects poor distribution |
| Valve will not open | Controller output, wiring, solenoid, flow direction, isolation valve and diaphragm | The controller is necessarily faulty |
| Valve will not close | Debris, diaphragm damage, bleed screw, solenoid seating and minimum flow | The whole valve must be replaced |
| Controller station fails | Programming, sensor shutdown, wiring, output voltage and field short | A Wi-Fi problem always affects conventional station output |
| Pump cycles or loses prime | Suction leaks, source level, check valve, pressure tank/control and duty point | A larger motor corrects suction-side faults |
| Drippers have uneven flow | Filter condition, pressure regulation, line length, elevation and flushing | All emitters operate uniformly at any pressure |
Product specification checks
Match the exact manufacturer, product family, model, SKU or part number, inlet or thread, voltage, pressure range, flow range and compatible accessories. Read TMI product information together with the current manufacturer specification when a design decision depends on performance.
Cape Town collection
Turfmanzi Irrigation (Pty) Ltd
Block C, Unit 11, Winelands Close Business Park
Winelands Close, Stikland Industrial
Bellville, Cape Town, Western Cape, 7530
Collection availability and timing must be confirmed before travelling.
Gauteng collection
Unit 10, Hillview
912 Richards Drive
Halfway House, Midrand, 1685
Collection availability and timing must be confirmed before travelling.
Delivery, availability and lead times
An orderable product is not necessarily physically available at the nearest branch. Stock may be held at another branch or procured after ordering. Product availability, dispatch timing and delivery charges must be confirmed from the product or order information and TMI fulfilment communication. Bulky, long, heavy or special-order goods may require a separate delivery quotation.
For an urgent requirement, contact TMI Irrigation before ordering and provide the product code, required quantity, delivery town or collection branch and required date.