Pump Solutions Group Neptune Series 500 MODEL 481 THRU 547 - Manual (Page 11)

8
4.0.3 Parts required to test or adjust Relief Valve Pressure.
1 Pc. 1/2” Pipe Nipple 6” Long
2 Pcs. 1/2” Pipe Nipple 2” Long
1 Pc. 1/2” Hand Valve
2 Pcs. 1/2” Tee
1 Pc. 1/2” NPT X 1/2” Hose (Fitting)
1 Pc. 1/2” Hose, As Required
1 Pc. 1/2” Pressure Gauge (Minimum Gauge Pressure 500 psi)
1 Pc. Allen Wrench 3/16”
1 Pc. External Relief Valve (optional)
NOTE
The above parts must have a working pressure rating above the required set pressure.
5.0 INSTALLATION
OUTDOORS
The “dia-pump” is a totally enclosed pump which can be used outdoors or indoors. When installed outdoors, make sure
that the pump is protected against extremes of nature as follows:
5.0.1.
Running of the pump when exposed to tropical sunshine, with ambient temperature above 100ºF, 38ºC would
cause excessive oil and motor temperatures. The pump should be shaded and located in such a way as to
permit a high degree of air circulation.
5.0.2
Under cold conditions, the pump should be insulated and a heater should be supplied in order to maintain the
hydraulic fluid at an ambient temperature above 30ºF, -1ºC. Heat may be provided by a 100 watt bulb or a
heater tape, etc.
6.0 START-UP PROCEDURE (FLOODED SUCTION)
The following start-up procedure is complete and does repeat instructions on filling the gear box and pump.
6.0.1
The gear box should be filled with hydraulic fluid per the instructions in paragraph 1.0.11. Let the pump stand for
30 minutes and then recheck fluid level. Be certain that pump discharge lines are open.
6.0.2
Confirm that the liquid head is flooded and no air remains per the following paragraphs. Pumps should not be
running. Wear appropriate protective gear when performing any step that involves contact with the chemical.
6.0.2.1 SERIES 500 and 500-A METAL HEAD
Make certain that pumping chamber is flooded and air is purged by loosening Discharge Valve Cap (FIG.#536
on page 21) approximately 2 to 3 turns and allowing solution to appear. Then, tighten discharge valve cap. This
procedure will also allow air to vent from pumping chamber. THE “dia-PUMP” WILL NOT FUNCTION IF AIR IS
TRAPPED IN THE HYDRAULIC FLUID OR LIQUID PUMP CHAMBERS.
6.0.2.2 SERIES 500 AND 500-A PVC HEAD
PVC Head Pumps –Discharge Valve Cap (P/N 000256 on page 22) is loosened by loosening Valve Cap Screws
(P/N 100250).
6.0.2.3 SERIES 500-E (See page 25)
6.0.3
Follow the procedure below:
1. Make certain that the suction line, liquid end and discharge cartridge chamber are filled with water or
system fluid.
2. Set the capacity control knob to approximately 30-40% of maximum capacity.
3. On initial start-ups: Check for proper motor rotation (Refer to Paragraph 1.0.9). Run the pump for 10-20
seconds, then stop for 20-30 seconds. Repeat a few times. During these short runs, listen for any abnormal
motor or crank noises, and if present, refer to Trouble Shooting Chart.