Description

Atlas Copco XAHS 37 DD, XAHS 70 DD7, XAS 47 DD, XAS 90 DD7, XAS 57 DD 2010 User Manual

I’ve been wrenching for 28 years, and I’ll tell you straight—working on a portable compressor without the factory documentation is how you wreck a Deutz block or fry a generator control board. This is the Atlas Copco XAHS 37 DD, XAHS 70 DD7, XAS 47 DD, XAS 90 DD7, XAS 57 DD 2010 User Manual, 66 pages of actual OEM instructions, not some aftermarket rewrite that leaves out the critical safety valve settings. If you’re a shop owner or a DIY guy running a rental fleet, you need the torque values from Chapter 8 and the circuit diagrams in Section 2.8 before you touch a wrench.

Safety Precautions: 7 Sub-Sections Covering Every Risk

Chapter 1 runs seven solid sections on safety—transport, installation, use, maintenance, tool applications, and specific hazards. Page 7 outlines the exact grounding requirements for the generator option. Skip those and you could be looking at an arc flash that melts your eyebrows. The manual doesn’t guess; it tells you the minimum clearance for operation and the lockout procedure for the compressed air discharge. There’s a warning about using unauthorized parts. Atlas Copco made it explicit: any damage from non-factory parts voids the warranty. That’s the kind of liability protection you want when a customer’s crew is breathing compressed air from your machine.

Electrical System Diagrams: 8 Circuit Diagrams Listed

Section 2.8 is a goldmine—eight circuit diagrams for the different generator configurations: DDG 110V with and without automatic control, DDG IT 230/400V, 230V 6 kVA, cold start, and refinery equipment. If you’ve ever chased a short in a Manual Transmission wiring harness, you know how bad a mislabeled diagram can get. The OEM schematics here match the actual connector pinouts on the XAS 47 DD and XAS 90 DD7. No color-coding guesswork. Need the cold start relay layout? Page 21. Confirm with your multimeter before you order a replacement ECU.

What Torque Values Are Listed in Chapter 8?

Section 8.1 splits torques into two categories: general applications and important assemblies. The “important assemblies” list includes the compressor element bolts, engine mounting bolts, and flywheel bolts. If you’re swapping a compressor element on a XAHS 70 DD7, you need those values—over‑torque the housing and crack the casting; under‑torque and it walks apart at 150 psi. Section 8.2 gives you the shutdown switch settings and safety valve cracking pressures. I’ve seen guys set the pressure relief at 200 psi on a unit that should pop at 180—that’s how you get a blown separator tank. Stick to the factory table.

Maintenance Schedule: Preventive Maintenance Starts on Page 26

Chapter 4 spells out the preventive maintenance schedule, including service paks, oil change intervals, cooler cleaning, and battery care (electrolyte level, dry‑charged activation, recharging). The chart on page 26 (estimated, check inside) lists engine oil change at 500 hours, compressor oil at 1000 hours—but only if you use the recommended Atlas Copco oil. Mixing oils? You’ll clog the coalescing filter and push oil into the air stream. Section 4.7 even covers cleaning the fuel tank. That’s not in a generic manual. Also includes a section on changing tyres (yes, trailer‑mounted units) and storage procedures for machines sitting over winter.

Operating Instructions: Starting, Stopping, and Fault Situations

Section 3.2 gives you the cold start procedure (option) and the standard start. If you’re in a northern state, you’ll use the anti‑frost device instructions in 3.1.6. The fault situations table (3.2.6) lists the protective devices: high discharge temperature shutdown, low oil pressure, high engine coolant temp. It tells you what the warning lamps mean and what action to take. I had a customer ignore the “high air temperature” light and run his XAS 57 DD another hour—cost him a compressor element rebuild. The manual spells out the reset procedure and the required cooldown before restart. Read it before you assume it’s a sensor glitch.

Source Validity: OEM Factory Documentation – Not Aftermarket

This is the original 2010 instruction manual from Atlas Copco Portable Air Division, printed matter number 2954 2140 02. No photocopies, no third‑party reprints, no missing pages. It includes the actual data plate information (Chapter 9) so you can verify your machine’s serial number against the specs. The conversion list in 8.4 translates SI to British units (psi, ft·lb, in·lb, etc.). I’ve seen aftermarket “manuals” that list torque in Nm with no conversion—and then the tech uses a foot‑pound wrench setting that’s 15% off. This manual gives you both. That’s real utility on the workbench.

Related manuals you might need if you run a mixed fleet: Instruction Manual Portable Compressors XRY/XRXS/XRVS, Atlas Copco Portable Compressors Instruction Manual, Instruction Manual for Atlas Copco AC Generators QAC 500. For a deeper dive into drivetrain fundamentals, look at the Manual Transmission section on Wikipedia—different equipment, same principle of getting the spec right.

FAQ

Does this manual cover the XAS 110 DD7 model?

No. The manual covers XAHS 37 DD, XAHS 70 DD7, XAS 47 DD, XAS 90 DD7, and XAS 57 DD. The XAS 110 DD7 appears in the OCR excerpt but is not listed in the title—check the product page for the exact model list if you need a different variant.

How many pages does the PDF have?

66 pages.

Can I get the torque values for the XAS 47 DD engine mounting bolts?

Yes. Section 8.1.2 lists torque values for important assemblies, including engine mounting bolts. The manual specifies both Nm and ft·lb. You need to match the bolt grade indicated on the data plate—the table in 8.1.2 covers that. Don’t rely on a generic online chart; these values are specific to the Deutz D2011L02 engine installation.

Are wiring diagrams for the DDG generator included?

Yes, eight diagrams in Section 2.8 covering 110V, 230/400V, 230V 6 kVA, cold start, and refinery equipment. Both with and without automatic control systems.

If you’re tired of hunting through forum posts and aftermarket PDFs that skip the safety valve settings, go with the document that Atlas Copco signed off. Access the Factory Manual now and keep it on your tablet next to the compressor. You’ll have the torque specs, wiring diagrams, and maintenance intervals at your fingertips—no more guesswork.