Chorula k. Opola 4 km from motorway A4 Mon–Fri 06:00–20:00
+48 602 716 551

Sermac Service

Specialist service for Sermac concrete pumps: hydraulics, valve reconditioning, piston replacement. Parts from Italy (7–14 days). Mobile service, Chorula.

Sermac pump service — hydraulic repair at PHS Magnum

In brief

PHS Magnum services Sermac concrete pumps (Italian manufacturer, Cesano Maderno near Milan): hydraulic repair, distribution valve reconditioning and replacement, piston replacement, CAN-bus diagnostics, and mobile attendance on site. Sermac’s construction is simpler and more mechanical than Putzmeister — easier to work on in many respects, though specialist parts have longer lead times from Italy (7–14 days standard, 2–4 weeks for specialist items). Base: Chorula near Opole, ISO 9001:2015. Ask for a quote.

Sermac — Italian alternative at a lower price point

Sermac Srl (Cesano Maderno near Milan, Italy, founded 1989) is an Italian concrete pump manufacturer focused on the more economical segment of the market. Less common in Poland than Putzmeister, Cifa, or Schwing, but present among contractors who chose Sermac as their first machine.

PHS Magnum services Sermac pumps for this niche — backed by direct contact with the manufacturer in Italy.

Sermac models covered

Boom pumps

  • Sermac 5Z36 — popular 5-section boom (Zenith series, ~36 m reach)
  • 5Z42 — larger 5-section boom
  • 5RZ51, 6RZ65 — Sermac’s flagship boom pumps (up to ~65 m)

Stationary pumps

  • Smaller stationary pumps (trailer-mounted)
  • Special configurations — some custom-order variants

Sermac construction — key characteristics

Sermac vs Putzmeister/Cifa:

  • Simpler electronics (less automation, more manual control)
  • Standard butterfly valve (not a proprietary design like the Putzmeister S-valve)
  • Bosch or Rexroth hydraulics (off-the-shelf market components)
  • Purchase price typically 15–25% below Putzmeister

Implications for service:

  • Easier repair of mechanical elements (less electronics = fewer control system failures)
  • More challenging advanced diagnostics (no OEM tester available)
  • Lower cost for consumable parts (standard components), but slower delivery for specialist items

Service scope

Diagnostics

Sermac has no OEM tester — we use universal tools:

  • CAN bus analyser (J1939)
  • Oscilloscope for electrical signals
  • Hydraulic pressure gauges
  • Thermal imaging camera (to detect hot spots)

Rubber piston replacement

Typically required every 20,000–40,000 m³ of concrete pumped. Sermac pistons are compatible with generic OEM equivalents — less costly than genuine originals.

Hydraulic repair

Sermac uses Bosch Rexroth or Hydac components — standard market parts. Good parts availability, independent of Sermac’s own distribution:

  • Rexroth A4VG hydraulic pumps
  • Hydac filters
  • ISO VG 46 oil (standard specification)

Distribution valve replacement

Sermac uses a butterfly valve (smaller models) or ball valve (larger models). Full replacement or reconditioning:

  • Seal replacement: 1 working day
  • Full valve replacement: 1–2 working days

Boom repair

Sermac steel booms — weld repair is possible. Standard procedure: NDT → welding to ISO 9606-1 → post-weld NDT → repainting.

“Sermac Service” package

For fleet customers with Sermac machines (rare in Poland, but fully supported):

ItemIncluded
Rubber pistons (full set)✓
Hydraulic filter✓
Fuel filter✓
Air filter✓
Hydraulic oil ISO VG 46✓
Engine oil✓
Key gaskets and seals✓

Package pricing is typically 15–25% below individual item ordering.

Common Sermac faults — symptom, cause, action

SymptomMost likely causeTypical action
Loss of pumping outputWorn rubber pistons, hydraulic leakPiston replacement, system pressure check
Oil leak at cylindersSeal wear (models aged 8–10 years)Full seal kit replacement
Distribution valve not switchingButterfly/ball valve wear, residual materialValve reconditioning or replacement
CAN-bus control errorsSensors, wiring, control moduleCAN diagnostics (J1939), wiring repair
Pulsation / uneven runningAir in hydraulics, worn valvesBleed hydraulics, check Rexroth components

The above are typical scenarios — the exact scope is confirmed after diagnostics. We cover more complex valve and piston repairs in the concrete pump repair section, and statutory inspection details in TDT pump inspections.

Working with Sermac operators

For small concrete contractors running 1–3 Sermac machines we offer:

  • One-off service — individual call-outs
  • Maintenance plan — scheduled servicing with advance parts ordering built in
  • Mobile service — on-site attendance for routine repairs
  • Technical consultancy — advice on major repair vs new machine decisions

Contact: biuro@magnumchorula.pl, +48 602 716 551.

Frequently Asked Questions

We cover the full Sermac range (Italy): boom pumps (28–42 m reach segments), stationary pumps, and smaller mobile pumps. All generations sold in Poland between 2000 and 2020. Sermac is a smaller Italian manufacturer — less prevalent in the Polish market than Putzmeister, Cifa, or Schwing, but well represented among smaller concrete contractors.

Directly from the Sermac distributor in Italy (headquarters: Cesano Maderno near Milan). Standard items (pistons, filters, oils, seals): 7–14 working days by courier. Specialist components (hydraulic valves, electronics): 2–4 weeks. Sermac has no Polish office — we liaise directly with the manufacturer.

It depends on the application. Sermac is often chosen by smaller concrete contractors — the purchase price is typically 15–25% lower than Putzmeister, and the construction is simpler (less electronics, more classical mechanics). The downsides: slower parts availability (Italy, no Polish office), weaker local technical support, and lower market penetration among Polish contractors.

Yes. Our mobile technician carries a CAN-bus analyser compatible with Sermac (universal diagnostic tools cover Sermac's architecture). We travel up to 200–300 km from Chorula. On-site we can carry out: diagnostics, rubber piston replacement, routine hydraulic repairs, and oil changes. Major repairs are carried out in our workshop.

Sermac does not have a proprietary diagnostic system equivalent to the Putzmeister Ergonic. Their pumps use a standard CAN-bus with SAE J1939 protocol — fully compatible with our diagnostic toolkit (CAN analyser, oscilloscope, universal diagnostics). We have complete access to engine parameters, hydraulic data, and sensor readings.

The most frequent issues are: hydraulic seal leaks (older models after 8–10 years of service), piston wear (common to all concrete pumps), CAN-bus electronics faults (less reliable than premium brands), and wear of the distribution valve (butterfly-type valves on smaller models, more advanced valves on larger ones).

We keep the fastest-moving items in stock: rubber pistons in standard sizes (Ø180–Ø220), hydraulic filters, ISO VG 32/46 oils, and O-ring seals. Larger items are ordered from Italy with a 7–14 day lead time. We deliberately hold limited Sermac stock given the smaller market share in Poland.

The labour itself for standard repairs (piston replacement, seal changes, routine hydraulic work) is typically 1–3 working days. The bottleneck with Sermac is specialist parts delivery from Italy: standard items take 7–14 days, hydraulic valves and electronics 2–4 weeks. For planned repairs we strongly recommend ordering parts in advance. Ask for a quote and a realistic lead time for your specific model.

Yes. Missing original documentation is not an obstacle — we identify the model and configuration from the nameplate and serial number, and read hydraulic parameters directly from the CAN bus. With older second-hand Sermacs we typically start with a baseline inspection: assessing the condition of the hydraulics, distribution valve, pistons, and control system to map out the required scope of work.

Sermac's simpler, more mechanical construction uses market-standard hydraulic components (Bosch Rexroth, Hydac), which makes some repairs simpler and cheaper in parts cost. The disadvantage is the lack of a manufacturer's Polish office and longer lead times for specialist parts from Italy. Putzmeister offers better parts availability and OEM support, albeit at a higher component cost. We compare the brands in more detail on the [Putzmeister service](/en/pump-service/brands/putzmeister/) and [Cifa service](/en/pump-service/brands/cifa/) pages.

Contact & Hours

ul. Kościelna 9, 47-316 Chorula

Mon–Fri 06:00–20:00

Sat 07:00–15:00

+48 602 716 551 Contact Form
DEKRA ISO 9001:2015 Quality Management Certificate — PHS Magnum

ISO 9001:2015

4 km from motorway A4

180 km from German border

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Pogotowie Techniczne TIR & SILO +48 602 716 551