FAQ

  • Q Which industries typically use air compressors?

    A
    Our compressors are general industrial equipment and are commonly used in manufacturing: pneumatic tools, CNC machines, assembly lines
    Food and Beverage: bottling, packaging (oil-free air required)
    Pharmaceutical: clean room processes, tablet coating (class 0 air)
    Textile: air jet looms, spinning machines
    Energy: natural gas pipeline control, compressed natural gas (CNG) compression, etc.
  • Q Which type of compressor is the most energy-efficient for 24/7 operation?

    A
    Variable speed drive (VSD) screw compressors can reduce energy waste by 25-40% compared to fixed speed models.
  • Q Can you modify standard models for special needs?

    A
    Yes, we offer: Pressure/flow customization
    Material upgrades: stainless steel for wet environments
    Compact design: space-saving units for mobile applications
  • Q What is the minimum order quantity for custom orders?

    A
    The minimum order quantity for ODM projects is 5 units.
  • Q How can we ensure that the custom compressor meets our specifications?

    A
    We provide:
    * 3D design simulation before production
    * Field test report (flow, noise, etc.)
    * 1 year performance guarantee
  • Q Can you match the color/logo of our brand?

    A
    Yes - laser engraved or painted logo is available.
  • Q Do you provide maintenance service for custom equipment?

    A Yes, we can provide after-sales service.
  • Q What quality inspection items must the air compressor pass before leaving the factory?

    A
    * Performance test: whether the exhaust volume, exhaust pressure, power, energy efficiency ratio, etc. meet the standards.
    * Safety test: pressure vessel strength test, safety valve opening and closing pressure, electrical safety (grounding, insulation resistance, etc.).
    * Operation test: continuous load operation (usually 4-8 hours), check whether the vibration, noise, and temperature rise are normal.
    * Air tightness test: no leakage in pipelines, joints, and gas tanks (commonly used soapy water or nitrogen leak detection).
    * Control system verification: whether the automatic start and stop, pressure regulation, and alarm functions (such as overpressure and overheating) are sensitive.
  • Q What are some common quality inspection failures of air compressors?

    A
    * Performance does not meet the standard: insufficient exhaust volume, power ratio exceeds the standard.
    * Safety hazards: safety valve failure, pressure vessel weld defects.
    * Noise/vibration exceeds the standard: usually due to poor rotor dynamic balance or unstable installation.
    * Oil leakage/air leakage: aging of seals or improper assembly.
  • Q What should the user check when accepting the air compressor?

    A
    * Document Verification: Certificate, test report, instruction manual.
    * Visual Inspection: No transportation damage, no loose fasteners.
    * Trial Run: Verify that the no-load starting current is within the normal range.
    * Performance Test: Ensure stable pressure output and normal temperature during load operation.
    * Functional Check: Confirm proper operation of the automatic drain valve and air filters.
  • Q How to inspect the quality of the air compressor after repair?

    A
    * Repair Validation: Re-test the specific components that were repaired—e.g., if the airend is replaced, verify discharge volume and vibration levels.
    * Critical Component Check: Ensure correct installation and alignment of key parts such as bearings, seals, and couplings.
    * System Performance Test: The unit must operate continuously for 24 hours without abnormalities before being approved for acceptance.
  • Q Recommendation for quality inspection cycle

    A
    * Daily Inspection: Record operating parameters (pressure, temperature, current) every week.
    * Regular Inspection: Entrust a third party to test energy efficiency and compressed air quality every 6-12 months.
  • Q How to deal with unqualified quality inspection?

    A Negotiate with the supplier: return or repair according to the contract requirements.
  • Q Why customer choose us?

    A
    We have 18 years of experience in the air compressor industry. Our company dominates strong technical skill, advancing manufacture equipment and testing device, execute strictly of ISO9001 quality management system. As a CE certificated manufacturer, our Oil-free series air compressor also reaches Germany TUV Class 0 standard.
  • Q How long is the delivery time ?

    A
    For standard voltage 15 working days. Non-standard please confirm our sales representative.
  • Q What is the payment term and method?

    A
    1. 30% deposit, 70% balance paid before shipment. Or 100% L/C at sight.
    2. The supported payment methods are T/T, L/C, D/P, Western Union, Paypal, credit card, etc.
    3. The supported currencies are USD, EUR, RMB, etc.
  • Q How about your after-sales service?

    A
    1. Online installation and commissioning guidance.
    2. Well-trained engineers are available to overseas service.
    3. World-wide agents can provide services nearby.
    4. 24/7 hours online service support.
  • Q How about your warranty?

    A
    Two years for screw air end. One year for the whole machine except consumable spare parts from date of commissioning.
  • Q Do you have any certificate?

    A
    Yes. CE ,ISO,TUV Class 0 certificates.
  • Q How do you control the quality?

    A
    1. All parts are strictly inspected before use.
    2. The key components are imported from Europe.
    3. Each compressor must go through strict continuous testing for at least 5 hours before leaving the factory.
    4. Each compressor has an identity transfer card, which can be traced throughout the process.

Quick Links

Products

Contact Us

Telephone: +86-173-2106-2761
 WhatsApp: +8617321062761
Email: Anna@rockymachinery.com
 Address: Room 604, #12, Powerlong Center, No.689 Xiwang Road, Jiading District, Shanghai, China
Leave Us A Message
Copyright © 2025 Shanghai Rocky Machinery Co., Ltd. All Rights Reserved.   沪ICP备2021037284号-2