Gardner Denver L Series Service manual

13
-
25
-
6
25
Version: 00
March 14, 2018
L-SERIES
SINGLE STAGE
BASE- MOUNTED and TANK MOUNTED
COMPRESSORS
GD PILOT Controller
MODELS L4-5B
5 and 7.5 HP
60HZ
OPERATING AND
SERVICE MANUAL

13-25-613 Page 1
MAINTAIN COMPRESSOR RELIABILITY AND PERFORMANCE WITH
GENUINE GARDNER DENVER® COMPRESSOR PARTS AND SUPPORT SERVICES
Gardner Denver®Compressor genuine parts, manufactured to design tolerances, are developed for optimum
dependability –specifically for Gardner Denver compressor systems. Design and material innovations are the result
of years of experience with hundreds of different compressor applications. Reliability in materials and quality
assurance is incorporated in our genuine replacement parts.
Your authorized Gardner Denver Compressor distributor offers all the backup you’ll need. An AirSmart™network of
authorized distributors provides the finest product support in the air compressor industry.
Your authorized distributor can support your Gardner Denver air compressor with these services:
1. Trained parts specialists to assist you in selecting the correct replacement parts.
2. Factory warranted new and remanufactured rotary screw airends. Most popular model remanufactured
airends are maintained in stock at the factory, for purchase on an exchange basis with liberal core credit
available for the replacement unit.
3. A full line of factory tested AEON™compressor lubricants specifically formulated for use in Gardner Denver
compressors.
4. Repair and maintenance kits designed with the necessary parts to simplify servicing your compressor.
Authorized distributor service technicians are factory trained and skilled in compressor maintenance and repair. They
are ready to respond and assist you by providing fast, expert maintenance and repair services.
To Contact Gardner Denver or locate your local distributor:
Visit: www.contactgd.com/compressors
Or
Call: [phone]
INSTRUCTIONS FOR ORDERING REPAIR PARTS
When ordering parts, specify Compressor MODEL, Method of Cooling, HORSEPOWER and SERIAL NUMBER (see
nameplate on unit). The Airend Serial Number is also stamped on top of the discharge bearing carrier casting.
All orders for Parts should be placed with the nearest authorized distributor.
Where NOT specified, quantity of parts required per compressor or unit is one (1); where more than one is required
per unit, quantity is indicated in parenthesis. SPECIFY EXACTLY THE NUMBER OF PARTS REQUIRED.
DO NOT ORDER BY SETS OR GROUPS.
To determine the Right-Hand and Left-Hand side of a compressor, stand at the motor end and look toward the
compressor. Right-Hand and Left- Hand are indicated in parenthesis following the part name, i.e. (RH) and (LH),
when appropriate.

13-25-613 Page 2
WARNING –PROHIBITION –MANDATORY LABEL INFORMATION
Gardner Denver Rotary Screw compressors are the result of advanced engineering and skilled
manufacturing. To be assured of receiving maximum service from this machine, the owner must exercise
care in its operation and maintenance. This book is written to give the operator and maintenance
department essential information for day-to-day operation, maintenance and adjustment. Careful
adherence to these instructions will result in economical operation and minimum downtime.
Boxed text formats are used, within this manual, to alert users of the following
conditions:
Safety Labels are used, within this manual and affixed to the appropriate areas of
the compressor package, to alert users of the following conditions:
Indicates a hazard with a high level of risk, which if not avoided,
WILL
result in death or serious
injury.
Equipment Starts Automatically
Cutting of Finger or Hand Hazard –Rotating
Impeller Blade
Cutting of Finger or Hand Hazard –Rotating Fan
Blade
Health Hazard –Explosive Release of Pressure
High Voltage –Hazard of Shock, Burn, or Death
Present until Electrical Power is Removed
Entanglement of Fingers or Hand/Rotating Shaft

13-25-613 Page 3
Indicates a hazard with a medium level of risk which, if not avoided,
COULD
result in death or
serious injury.
Asphyxiation Hazard –Poisonous Fumes or Toxic Gases in Compressed Air
Indicates a hazard with a low level of risk which, if not avoided,
MAY
result in a minor or
moderate injury.
Burn Hazard –Hot surface
PROHIBITION/MANDATORY ACTION REQUIREMENTS
Do not Operate Compressor with Guard Removed
Do Not Lift Equipment with Hook –No Lift Point
Handle Package at Forklift Points Only
Lockout Electrical Equipment in De-Energized
State
Loud Noise Hazard –Wear Ear Protection
Read the Operator’s Manual Before Proceeding
with Task