Carel · Durban
PLC & Controller Programming for Carel Systems in Potato & Onion Storage | Riverhorse Valley
Controller configuration, defrost strategies and supervisory integration. We support Carel electronic controllers and humidity systems running R404A in potato & onion storage across Riverhorse Valley and Riverhorse Valley Business Estate.
Technical highlights
SAQCC Gas certified plc & controller programming
SANS 10147 pressure and gas compliance, genuine Carel OEM parts and rapid dispatch to Riverhorse Valley.
- SAQCC Gas registered technicians handling R404A
- SANS 10147 pressure vessel and installation compliance
- Genuine Carel OEM parts — Carel EVD Evolution drivers, NTC/ratiometric probes and pGD terminals
- 1–2 days per plant to Riverhorse Valley, Durban
Common maintenance vectors
What we find on these systems
- Default parameter sets left in place
- Defrost timing mismatch
- Alarm bands set too wide
- EVD driver alarms from a mis-set superheat target
- Corroded probe terminations in high-humidity rooms
- Lost parameter sets after unprotected power dips
Dynamic specifications
Potato & Onion Storage duty on Carel plant
Bulk stores with plenum ventilation and humidity control
| Typical system duty | +4 °C to +10 °C (Full plant control range) |
|---|---|
| Design humidity | 85–95% RH |
| Recommended gas / pressure class | R404A — handled by SAQCC Gas registered technicians |
| Equipment platform | Carel Electronic controllers and humidity systems — pCO/pRack controllers, EVD Evolution driver, humiSteam humidification |
| Compliance frameworks | GLOBALG.A.P., HACCP, SANS 10147, SAQCC Gas registration |
| OEM parts held | Carel EVD Evolution drivers, NTC/ratiometric probes and pGD terminals |
| Service deliverable | Parameter backup file and as-programmed schedule |
| Response / lead time | 1–2 days per plant |
| Location hub | Serving Riverhorse Valley Business Estate and surrounds off the N2 / M19 |
Local context
Working in Riverhorse Valley
We service Riverhorse Valley Business Estate and the surrounding blocks of Riverhorse Valley, Durban, with access off the N2 and M19. Sub-tropical coastal humidity keeps wet-bulb temperatures high year-round, which raises evaporative condenser duty and accelerates coil corrosion.
Bulk-bin ventilation with sprout-inhibitor cycles Condensation on bins causes rot spread through the stack
Compliance
Documentation you receive
- GLOBALG.A.P.
- HACCP
- SANS 10147
- SAQCC Gas registration
- Parameter backup file and as-programmed schedule
FAQ
Carel plc & controller programming in Riverhorse Valley
How fast can a technician service Carel equipment at a potato & onion storage site in Riverhorse Valley?
Riverhorse Valley sits on the N2 and M19, so our Durban dispatch reaches most Riverhorse Valley Business Estate sites inside a standard callout window. Emergency plc & controller programming runs 24/7 because condensation on bins causes rot spread through the stack.
Do you stock OEM components for Carel systems?
Yes — Carel EVD Evolution drivers, NTC/ratiometric probes and pGD terminals. Carel (Italy) equipment on R404A charges is supported with the fast-moving spares held at our Pretoria North workshop and non-stock items brought in on OEM order.
What pressure testing and gas compliance certificates are provided?
Every plc & controller programming job closes with a pressure test record and gas handling Certificate of Conformance issued under SANS 10147 by a SAQCC Gas registered technician, plus the GLOBALG.A.P. documentation your auditors expect.
What operating envelope do you commission this equipment to?
Potato & Onion Storage run at +4 °C to +10 °C at 85–95% RH, with plc & controller programming performed against Full plant control range. Condensation on bins causes rot spread through the stack
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Get started
Schedule an on-site diagnostic in Riverhorse Valley
Tell us what you need cooled and where. We respond with a scoped quote, and for emergencies we dispatch straight away.
- Phone / WhatsApp
- 069 268 0988
- info@reyds.co.za
- Workshop
- 386 Eeufees Street, Pretoria North, Gauteng
- Hours
- Mon–Fri 07:00–17:00, Sat 08:00–13:00. 24/7 emergency breakdown line.