User manual GRACO VISCOUNT HIGH-FLO 4-BALL PUMPS PARTS LIST

[. . . ] Instructions - Parts List Viscount® High-Flo® 4-Ball Pumps 3A0537B ENG Hydraulic-powered pumps for low pressure, high volume circulation of finishing materials. Do not use for flushing or purging lines with caustics, acids, abrasive line strippers, and other similar fluids. Important Safety Instructions Read all warnings and instructions in this manual. See page 3 for model information, including maximum working pressure and approvals. [. . . ] Close the fluid shutoff valve (D) closest to the pump on the upstroke and be sure that the pump stalls. NOTICE Do not allow the pump to run quickly for a long period of time as this may damage the packings. Stop the pump on the downstroke, before the air motor changes over. NOTICE Failure to stop the pump at the bottom of its stroke allows fluid to dry on the piston rod, which can damage the throat packings and the TSL pump piston seal when the pump is restarted. Flushing · Flush before changing colors, before fluid can dry in the equipment, at the end of the day, before storing, and before repairing equipment. Check connectors for leaks and tighten as necessary. Flush with a fluid that is compatible with the fluid being dispensed and the equipment wetted parts. · · Mix Tank Volume Don't let the mix tank run dry. When the tank is empty, the pump demands more power as it tries to suck in some fluid. This causes the pump to run too fast, which can seriously damage the pump. Hydraulic Power Supply Check Carefully follow the hydraulic power supply manufacturer's recommendations on reservoir and filter cleaning, and periodic changes of hydraulic fluid. 12 3A0537B Maintenance Changing the TSL Check the condition of the TSL and the level in the reservoir every week, minimum. TSL should be changed at least every month. 206995 Throat Seal Liquid (TSL) carries residue from the pump rod into the reservoir. Discoloration of the TSL fluid is to be expected during normal operation. After some time the TSL will thicken and darken, and must be replaced. Thick, dirty TSL will not pump through the lines and will harden in the pump wet-cup. How long TSL lasts depends on which chemicals are used, how much is used, what pressure, and condition of the pump seal and rod. A drop in the level of TSL in the reservoir indicates that the throat packings are starting to wear. Add TSL to the reservoir and keep the level above the Minimum fill line. Monitor the usage and condition of the TSL. If pumped material bypasses the throat packings and enters the TSL reservoir, replace the packings. To change the TSL: 1. Shut off the pump. To avoid the buildup of static charge, do not rub the plastic bottle with a dry cloth while it is attached to the pump. Clean screen (Z) of inlet check valve (VI). If check valves are not sealing and dirty TSL is getting into the wet-cup, replace the check valves (VI, VO). Fill the reservoir to the Maximum fill line with Throat Seal Liquid (TSL). [. . . ] With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco's written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco. [. . . ]