Installation Guide
Tools Needed:
- Adjustable wrench set
- Air pressure gauge
- Screwdrivers (flat and Phillips)
- Teflon tape
- Level
Step-by-Step Installation
- Choose Installation Location: Select a well-ventilated area with solid, level flooring and adequate clearance for maintenance.
- Unpack and Inspect: Remove all packaging materials and inspect for shipping damage. Check all components against packing list.
- Position the Compressor: Place on a level surface with vibration pads if provided. Ensure proper clearance from walls and obstructions.
- Connect Air Lines: Install air lines using appropriate fittings. Apply Teflon tape to threaded connections to prevent leaks.
- Electrical Connection: Connect to properly grounded electrical outlet matching voltage requirements. Use dedicated circuit if required.
- Oil Check and Fill: Check oil level and fill to proper level with recommended compressor oil if oil-lubricated model.
- Initial Test Run: Run compressor through initial cycle to check for proper operation, leaks, and pressure build-up.
Specifications
| Model Series | AC-789HT |
| Type | Industrial Air Compressor |
| Power Source | Electric Motor |
| Maximum Pressure | 175 PSI |
| Air Delivery (CFM) | 25 CFM at 90 PSI |
| Tank Capacity | 80 Gallons |
| Motor Power | 7.5 HP |
| Noise Level | 75 dB |
| Power Requirements | 230V, 60Hz, 30A |
| Dimensions (HxWxD) | 72 x 36 x 48 inches |
| Weight | 450 lbs |
| Pump Type | Two-Stage Reciprocating |
Warranty Information
- Full Warranty: 2 years parts and labor
- Pump Warranty: 5 years on compressor pump
- Tank Warranty: Lifetime on ASME certified tank
For warranty service, contact Customer Service at 1-800-555-COMPRESS or visit CompressorPro.com
Key Features
Two-Stage Pump System
Advanced two-stage compression provides higher efficiency, cooler operation, and longer pump life compared to single-stage compressors.
ASME Certified Tank
Heavy-duty ASME certified air tank with safety valve and drain valve for reliable, safe operation and compliance with industry standards.
Thermal Overload Protection
Built-in thermal overload protection prevents motor damage from overheating during extended operation or high-demand situations.
Low Oil Shutdown
Automatic shutdown system activates when oil level drops below safe operating level, preventing pump damage and ensuring longevity.
Pressure Control System
Precise pressure regulation with adjustable cut-in and cut-out settings for optimal performance with various tools and applications.
Vibration Isolation
Rubber isolation mounts reduce vibration and noise transmission, protecting the compressor and improving workplace comfort.
Operating Modes Explained
Continuous Run
For applications requiring constant air supply such as sandblasting or multiple tool operation
Intermittent Duty
Standard operation for most tools with automatic start/stop based on pressure demands
Low Pressure Mode
Reduced pressure setting for delicate tools and finishing applications
High Pressure Mode
Maximum pressure for heavy-duty tools and industrial applications
Maintenance Mode
Special setting for maintenance procedures and system checks
Energy Saver
Optimized operation to reduce energy consumption during light use periods
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, pressure switch fault, thermal overload | Check power supply, reset overload switch, verify pressure switch operation |
| Low air pressure | Air leaks, worn valves, clogged intake filter | Check for leaks, inspect valves, clean or replace air filter |
| Excessive noise/vibration | Loose components, worn bearings, improper mounting | Tighten all fasteners, check bearings, ensure proper installation |
| Overheating | Dirty cooling fins, low oil, restricted ventilation | Clean cooling surfaces, check oil level, improve ventilation |
| Oil in air lines | Worn piston rings, overfilled oil, faulty separator | Check piston rings, adjust oil level, inspect air/oil separator |
| Frequent cycling | Air leaks, faulty pressure switch, undersized tank | Locate and repair leaks, adjust or replace pressure switch |
Error Codes
- E01: Overload protection activated - Allow cool down, check ventilation
- E02: Low oil pressure - Check oil level and pump
- E03: High temperature - Clean cooling system, improve ventilation
- E04: Pressure switch fault - Check switch and connections
- E05: Motor fault - Contact service center
- E06: Tank pressure high - Check pressure relief valve
Manual Downloads
Current Model Manuals
AC-789HT
Industrial 80-Gallon Compressor
AC-560HT
60-Gallon Two-Stage Compressor
AC-340ST
30-Gallon Single Stage
AC-120PT
Portable 20-Gallon Compressor
Popular Previous Models
AC-780HT
80-Gallon Industrial Compressor
AC-550HT
60-Gallon Heavy Duty
AC-330ST
30-Gallon Workshop Compressor
AC-110PT
Portable 15-Gallon Compressor