INSTRUCTIONS-PARTS LIST This manual contains important warnings and information. READ AND KEEP FOR REFERENCE. 308–674 Rev. C Supersedes Rev. B INSTRUCTIONS Viscount I Hydraulic Motor and Displacement Pump Model 238–349, Series A 06169 GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN COPYRIGHT 1996, GRACO INC. Graco Inc. is registered to I.S.
Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Disconnecting the Hydraulic Motor . . . . . . . . . . . . 8 Reconnecting the Hydraulic Motor . . . . . . . . . . . .
WARNING INJECTION HAZARD Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury. Fluid injected into the skin is a serious injury. The injury may look like just a cut, but it is a serious injury. Get immediate medical attention. Do not point the gun at anyone or at any part of the body.
WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury. Ground the equipment and the object being sprayed. Refer to Grounding on page 5. If there is any static sparking or you feel an electric shock while using this equipment, stop spraying immediately. Do not use the equipment until you identify and correct the problem.
Installation General Information 2. Hydraulic, and fluid hoses: use only electrically conductive hoses. NOTE: Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing. 3. Hydraulic power supply: follow manufacturer’s recommendations. NOTE: Always use Genuine Graco Parts and Accessories, available from your Graco distributor. 4. Spray gun: ground through connection to a properly grounded fluid hose and pump. 5.
Installation General 1. Connect the hydraulic motor (101) and the displacement pump (102) as explained on page 8. See Fig. 1. CAUTION 101 Keep the hydraulic system clean To reduce the risk of damaging the hydraulic power supply and motor, blow out all hydraulic lines with air, flush thoroughly with solvent, and then blow out with air again before connecting the lines to the hydraulic motor.
Operation Startup Shutdown & Care Before each use, check the hydraulic fluid level and add fluid as necessary to fill the lines. Follow the Pressure Relief Procedure Warning below. Pressure Relief Procedure WARNING WARNING FIRE HAZARD If hydraulic oil becomes too hot, it can reach its flash point and cause a fire. Operating at too high an oil temperature can also cause faster motor seal wear and leakage. The recommended hydraulic oil operating temperature is 80–115_F (27–45_C).
Service Disconnecting the Hydraulic Motor WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 7. 1 101 1. Relieve the pressure. 2. Disconnect the hydraulic hoses and plug all hydraulic connections and hoses. CAUTION 103 Keep the hydraulic system clean Always plug the hydraulic inlets, outlets and lines when disconnecting them for any reason to avoid introducing dirt and other contaminants into the system.
Notes 308-674 9
Service Disconnecting the Displacement Pump CAUTION 6. Unscrew the lower tie plate (3), and retaining nut (4) from the displacement pump. 7. Refer to manual 308–650 for displacement pump service. When servicing the left and center displacement pumps (as viewed from the rear of the system), the packings in both units must be replaced at the same time, or uneven performance will result. 1 101 1. Flush the entire system. NOTE: Any residual paint may clog the system.
Service Reconnecting the Displacement Pump 7. Turn on the power supply. Open the hydraulic return line valve first, then the supply line valve. Run the pump slowly to ensure proper operation. CAUTION Be sure to support the displacement pump while it is being disconnected, to prevent it from falling and causing injury or property damage. Do this by securely bracing the pump, or by having one person hold it while another disconnects it. 1. Hand–tighten the locking nut (4) on the displacement pump (102).
Notes 12 308-674
Pump Assembly Parts 1 For complete parts list, see manual 308–618. 2 For complete parts list, see manual 308–650. 3 Torque to 20–30 ft-lb (27–40 N m). 4 Torque to 140–150 ft–lb (190–203 N m) 5 Torque to 75–80 ft–lb (101–108 N m). 6 Apply lubricant. 3 1 101 1 Ref No. Part No.
Notes 14 308-674
Notes
The Graco Warranty and Disclaimers WARRANTY Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this warranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defective.
