1. ບົດແນະນຳ
This manual provides essential information for the safe and effective installation, operation, and maintenance of your Eastman Pressure Switch Model 60043. This device is designed to regulate electric water pumps in various residential and commercial water systems.
The pressure switch is factory preset to operate within a 30-50 PSI (Pounds per Square Inch) range, ensuring consistent water pressure control. It features a 1/4 inch Female Pipe Thread (FPT) connection with 18 NPSF threading for secure plumbing integration and includes a 1/2 inch knockout for electrical line connection. It is compatible with jet pumps, submersible pumps, and reciprocating pumps.

Figure 1: Eastman Pressure Switch Model 60043, a device for controlling electric water pumps.
2. ຂໍ້ມູນຄວາມປອດໄພ
Read all instructions carefully before installation and operation. Failure to follow these instructions may result in property damage, personal injury, or death. Always observe local electrical and plumbing codes.
- ອັນຕະລາຍໄຟຟ້າ: Ensure power to the pump circuit is disconnected at the main breaker before performing any installation, maintenance, or troubleshooting.
- ອັນຕະລາຍຈາກຄວາມກົດດັນ: Depressurize the water system before disconnecting any plumbing connections.
- ບຸກຄະລາກອນທີ່ມີຄຸນວຸດທິ: Installation and electrical wiring should be performed by a qualified electrician or plumber in accordance with all applicable codes and regulations.
- ການຕັ້ງພື້ນທີ່ເຫມາະສົມ: Ensure the pressure switch and pump system are properly grounded.
- ຂີດຈຳກັດອຸນຫະພູມ: Do not operate the switch outside its specified temperature range (39°F to 125°F).
3. ເນື້ອໃນຊຸດ
- 1 x Eastman Pressure Switch (Model 60043)
4. ຂໍ້ມູນຈໍາເພາະ
| ຄຸນສົມບັດ | ຂໍ້ມູນຈໍາເພາະ |
|---|---|
| ໝາຍເລກຕົວແບບ | 60043 |
| ຍີ່ຫໍ້ | ອີສແມນ |
| ຊ່ວງຄວາມກົດດັນ | 30-50 PSI (Preset) |
| ປະເພດການເຊື່ອມຕໍ່ | 1/4 inch FPT (18 NPSF threading) |
| ການເຊື່ອມຕໍ່ໄຟຟ້າ | 1/2 inch Knockout for electrical line |
| ການດໍາເນີນງານ Voltage | 120 ໂວນ |
| ການຈັດອັນດັບປັດຈຸບັນ | 2 Amps |
| ວັດtage | 240 Watts (Max Load) |
| ປະເພດການຕິດຕໍ່ | ເປີດປົກກະຕິ |
| ປະເພດວົງຈອນ | 2 ທາງ |
| ປະເພດຕົວກະຕຸ້ນ | ຄວາມກົດດັນ |
| ວັດສະດຸຕິດຕໍ່ | ທອງເຫຼືອງ |
| ຂະໜາດ (L x W x H) | 3.5 x 2.75 x 3.25 ນິ້ວ |
| ນ້ໍາຫນັກລາຍການ | 10.7 ອອນ |
| ການປະເມີນອຸນຫະພູມຕ່ໍາ | 39 ອົງສາຟາເຣນຮາຍ |
| ລະດັບອຸນຫະພູມສູງສຸດ | 125 ອົງສາຟາເຣນຮາຍ |
| ອຸປະກອນທີ່ເຂົ້າກັນໄດ້ | Jet pumps, submersible pumps, reciprocating pumps |
5. ການຕິດຕັ້ງແລະການຕິດຕັ້ງ
Before beginning installation, ensure the main power supply to the pump is turned off and the water system is depressurized.
5.1 ການເຊື່ອມຕໍ່ທໍ່
- Locate the pressure port on your water pump or pressure tank.
- Apply thread sealant (e.g., PTFE tape or pipe dope) to the 1/4 inch Male Pipe Thread (MPT) fitting on the pump or tank.
- Carefully thread the Eastman Pressure Switch onto the fitting. Tighten securely, but do not overtighten, to prevent damage to the switch or fitting.

ຮູບທີ 2: ຕົວຢ່າງample of a pressure switch integrated into a water pump system, illustrating ease of installation.
5.2 ສາຍໄຟຟ້າ
ຄຳເຕືອນ: Electrical wiring should only be performed by a qualified electrician. Ensure power is OFF at the circuit breaker.
- Remove the cover of the pressure switch.
- Locate the 1/2 inch knockout on the switch housing. Remove the knockout to allow entry for the electrical conduit or cable.
- Connect the electrical wires from the pump and the power supply to the appropriate terminals inside the switch. Refer to the wiring diagram provided with your pump or consult a qualified electrician. The switch typically has terminals for Line (L1, L2) and Load (Motor M1, M2) connections, along with a ground terminal.
- ໃຫ້ແນ່ໃຈວ່າການເຊື່ອມຕໍ່ທັງຫມົດແຫນ້ນແຫນ້ນແລະປອດໄພ.
- Replace the switch cover securely.

ຮູບທີ 3: ພາຍໃນ view of the pressure switch, highlighting the electrical terminals and the 1/4 inch FPT connection point.
6. ຄໍາແນະນໍາການດໍາເນີນງານ
The Eastman Pressure Switch Model 60043 is designed for automatic operation based on system pressure. It is factory preset to turn the pump ON when the pressure drops to 30 PSI and turn the pump OFF when the pressure reaches 50 PSI.
- After installation and wiring are complete and verified, restore power to the pump circuit at the main breaker.
- The pump will activate when the system pressure falls below 30 PSI.
- The pump will deactivate when the system pressure reaches 50 PSI.
- Monitor the system pressure to ensure the switch is operating within the specified range.

Figure 4: The pressure switch efficiently regulates water pressure, maintaining consistent pressure without manual intervention.
6.1 Pressure Adjustment (Advanced Users Only)
While the switch is factory preset, minor adjustments to the cut-in and cut-out pressure can be made. This procedure should only be attempted by experienced individuals. Consult the pump manufacturer's recommendations for appropriate pressure settings.
- ຄຳເຕືອນ: Disconnect power before removing the switch cover for adjustment.
- Inside the switch, there are typically two adjustment nuts on springs. The larger spring adjusts the cut-out pressure, and the smaller spring adjusts the differential (the difference between cut-in and cut-out).
- Turning the adjustment nut clockwise increases the pressure setting; counter-clockwise decreases it.
- Make small adjustments and test the system pressure after each adjustment.
7. ບໍາລຸງຮັກສາ
The Eastman Pressure Switch is designed for reliable, long-term operation with minimal maintenance. However, periodic checks can help ensure optimal performance.
- ການກວດກາປະຈຳປີ: ກວດສອບສະວິດປະຈໍາປີສໍາລັບອາການຂອງການ corrosion, ສາຍຂາດ, ຫຼືຄວາມເສຍຫາຍທາງດ້ານຮ່າງກາຍ.
- ຄວາມສະອາດ: Keep the exterior of the switch clean and free from dirt, debris, or moisture.
- ການຕິດຕາມຄວາມກົດດັນ: Regularly monitor your system's pressure gauge to ensure the pump is cycling within the expected pressure range. Significant deviations may indicate an issue with the switch or other system components.
- ຫຼີກ Tampກຳລັງ: Do not attempt to disassemble the switch beyond removing the cover for wiring or pressure adjustment. Internal components are not user-serviceable.
8. ການແກ້ໄຂບັນຫາ
This section addresses common issues you might encounter with your pressure switch. Always disconnect power before inspecting or working on the switch.
8.1 Pump Does Not Turn On
- ບໍ່ມີພະລັງງານ: Check the circuit breaker for the pump. Ensure it is in the ON position.
- ຄວາມກົດດັນຕໍ່າ: Verify that the system pressure is below the cut-in pressure (30 PSI). If the gauge reads above 30 PSI, the pump will not activate.
- ສາຍໄຟ: Inspect all electrical connections inside the switch for looseness or corrosion.
- ສະຫຼັບເຮັດວຽກຜິດພາດ: If power is present and pressure is low, but the switch contacts do not close, the switch may be faulty and require replacement.
8.2 Pump Does Not Turn Off
- ຄວາມກົດດັນສູງ: Verify that the system pressure has reached the cut-out pressure (50 PSI). If the gauge reads below 50 PSI, the pump will continue to run.
- Pressure Leak: Check for leaks in the plumbing system or a faulty check valve that could prevent pressure from building up.
- ສະຫຼັບເຮັດວຽກຜິດພາດ: If the system pressure reaches 50 PSI but the switch contacts do not open, the switch may be faulty and require replacement.
8.3 Pump Cycles Too Frequently (Short Cycling)
- Pressure Tank Issue: This is often an indication of a problem with the pressure tank, such as a waterlogged tank or incorrect air charge.
- ຮົ່ວ: Even small leaks in the system can cause frequent cycling. Check all plumbing for drips.
- ສະຫຼັບຄວາມແຕກຕ່າງ: Ensure the pressure differential (the difference between cut-in and cut-out) is adequate.
9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
For warranty information or technical support regarding your Eastman Pressure Switch Model 60043, please contact Eastman customer service. Keep your purchase receipt as proof of purchase.
Contact information can typically be found on the Eastman official webສະຖານທີ່ຫຼືຢູ່ໃນການຫຸ້ມຫໍ່ຜະລິດຕະພັນ.