OPERATING & INSTRUCTION MANUAL NEPTUNE GLYCOL FEED SYSTEM Models G-50-1, G-50-1A, G-50-2A, G-100-1A, G-100-2A Lansdale, PA 19446 Tel: 215-699-8700 Fax: 215-699-0370 REV NO 6 – 01/08/04 ZL106838
I. GENERAL DESCRIPTION Neptune Chemical Pump Company’s Glycol Feed System is intended for the automated addition of glycol into closed loop chilled and hot water systems. The Glycol Feed System automatically maintains pressure in the loop by adding glycol solution to make up for losses, which occur due to leakage. Glycol addition is controlled by a pressure switch with adjustable low and high set points.
II. OPERATION The glycol feeder is provided with a control panel with HAND/OFF/AUTO selector switch. When the panel is switched to the AUTO position, the pump is actuated via the pressure switch, which is mounted in the discharge assembly and sensing the pressure in the loop. The pressure switch is pre-set to start the pump at 12 psi and stop the pump when 30 psi in the loop is achieved. The adjustment range for the standard pressure switch is 10-45 psi to start the pump and 20-60 psi to stop the pump.
TROUBLESHOOTING PROBLEM PROBABLE CAUSE Pump is running but is not pumping anything 1. The motor rotation is incorrect. The proper rotation of the motor is counter-clockwise when looking at the motor shaft. Check the wiring diagram on the motor or the attached motor diagram for proper wiring. 2. On simplex single pump systems – Model G-XX-1 and G-XX-1A. The motor should be wired for 115V counter-clockwise rotation. See further information on the pump, which is attached. 3.
Bronze Rotary Gear Pumps Installation, Operation, and Maintenance Instruction INTRODUCTION Congratulations for choosing an Oberdorfer pump,the Industry Standard for quality since 1890. Construction Bronze Rotary Gear standard pump housings and helical gears are made of top quality bronze. Shafts are stainless steel. Pumps are available with bronze bearings and grease fittings or with carbon bearings which require no lubrication.
BRONZE ROTARY GEAR PUMP INSTRUCTIONS continued ……. INSTALLATION Site Preparation Choose a site that allows easy access to the pump for maintenance. Consider protection from the elements. Guard against drips and spray from nearby equipment. Choose a solid foundation for mounting. If noise is a concern, consider a rubber pad under the pump base to dampen.
BRONZE ROTARY GEAR PUMP INSTRUCTIONS continued ……. Flow By-Pass When a flow by-pass system is used to control output from the pump, the bypassed fluid should be directed back to the suction vessel to avoid recirculation heat build-up. In cases where this is not possible, connect to the suction at least 10 pipe diameters length away from the pump inlet. Provisions for cooling should be made in the event of recirculation heat build-up.
Mechanical Seals Pumps equipped with mechanical seals are of the standard pusher bellows type or wedge style. They can be expected to provide long and troublefree service provided: 1) Seal materials are compatible with pumped fluid and properly applied to the service.
PRESSURE SWITCH INSTRUCTIONS SQUARE D Commercial Pressure Switch Class 9013, Model FSG29J99 Model FSG29J99 CUT-OUT RANGE 20-60 PSI ADJUSTABLE RANGE 10-30 PSI CUT-IN RANGE 10-45 PSI PRESSURE CONNECTION : ¼” NPT EXTERNAL TECHNICAL TERMS Operating Points (Settings) Every pressure switch has two operating points; one on rising pressure and one of falling pressure.
PRESSURE SWITCH INSTRUCTIONS continued ….. SET POINT ADJUSTMENTS The pressure switch is set at the factory to the operating point(s) marked on the outside of the switch housing. Before readjusting the switch, cyle it to determine actual operating points. Non-Adjustable Differential The range adjustment nut ( Item H, Figure 3 ) or knob ( Item C, Figure 3 ) adjusts both setpoints by the same amount. To adjust the operating points : 1. 2. Place a flat blade screwdriver in a range adjustment nut slot.
INSTALLATION INSTRUCTIONS LL-3 (L-30N) LIQUID LEVEL SWITCH MODEL L30N LIQUID LEVEL SWITCH INSTALLATION AND OPERATING INSTRUCTIONS Installation: The L-30 liquid level switch is supplied with a 1-1/2” or 1-1/4” X 1 bushing threaded in place with 2 to 3 wraps of teflon tape, which must be intact or renewed if bushing and switch are separated before assembly in tank. Care must be exercised when threading the bushing into plastic or metal fittings.
MODEL L30N LIQUID LEVEL SWITCH INSTALLATION AND OPERATING INSTRUCTIONS 5). Apply slip on terminals to appropriate contacts of micro switch. Slide cover down cable and fasten to body of switch with four screws provided. Slide grommet down cable until outer jacket is level with small end of grommet per illustration page 2. Push grommet into tapered end of cover. Hold cable jacket to prevent rotation and thread gland nut firmly on to cover. Fig.
