INSTALLATION
Well Test
4
• If using plastic pipe, refer to manufacturer’s recommendations for depth and pressure.
• Keep pipes clean and free from debris and use pipe sealant on all fittings.
5. Install system check valves.
IMPORTANT:
Install only positive sealing check valves. Never use swing type check valves.
• For installations more than 100 ft (60m), install check valves in the drop pipe at intervals of 100
ft (60m) or as specified by the manufacturer.
• Install an inline check valve in the discharge line within 25 ft of the pump and below the draw-
down level of the water supply.
• If permitted by local codes, install a relief valve between the wellhead and the pressure tank.
• 4" submersible pumps with a 1-1/4" or 2”discharge contain a spring-loaded removable poppet
style check valve assembly. Refer to
to remove valve for drain back.
6. Install a torque arrestor just above the pump.
7. Fasten the electrical cable to the drop pipe with clamps or appropriate tape every 10 ft (3m).
• Take care not to scrape or pinch the cable against the well casing.
• Keep the cable slack when using plastic drop pipe to allow for stretching.
• Use an ohmmeter or megger to make insulation and continuity checks.
8. Lower pump at least 5 ft (1.5m) from bottom of well and above well screen or casing perforations.
9. Test the well. Refer to
.
10. Place a sanitary well seal or pit-less adapter over top of well per manufacturer’s recommendations.
Well Test
1. Install a partially opened gate valve on the end of the pipe.
2. Start the pump and slowly open valve to full flow.
3. If the discharge water is not clear within 30 minutes, stop pump and take necessary steps to correct.
4. Close valve until maximum required system flow rate is obtained.
5. Ensure the pump output is not greater than the yield of the well (low-yielding) by monitoring the
well draw-down level at the maximum system flow rate.
• Refer to
to correct issue.
Low-Yielding Well
1. Install a smaller pump. Consult licensed water systems professional contractor for sizing.
2. Install additional length of drop pipe to place pump lower in well.
3. Install a Franklin Pumptec or similar electronic run dry sensor.
4. Install a floatless liquid level control to work with the pressure switch.
5. Install a flow control valve in the discharge line upstream from the pressure switch to restrict output.
• A pressure tank with a bonded diaphragm, air cell, or water bag is recommended.
6. Install a low-pressure cut-off switch.
Risk of damage to pump or other equipment.
•
Never run pump unless it is completely submerged in water to avoid pump and motor damage
•
Air drawn into the pump can cause an airlock under certain conditions.
Содержание E Series
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