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Operator Manual
PORTABLE INVERTER GENERATOR
IMPORTANT – Please make sure everyone who will be using this equipment reads and
understands these instructions as well as any additional instructions provided before using
it.
Record the model and serial numbers of your Generator below:
Model No._____________________ Serial No._______________________
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Summary of Contents for Promate PM3750i
- Page 1 Operator Manual PORTABLE INVERTER GENERATOR IMPORTANT – Please make sure everyone who will be using this equipment reads and understands these instructions as well as any additional instructions provided before using Record the model and serial numbers of your Generator below: Model No._____________________ Serial No._______________________...
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Page 2: Table Of Contents
FOREWORD Thank you for purchasing Promate PM3750i. This operator manual is for proper handling, minor checking and maintenance of the PM3750i. Before using your generator: Please read these instructions completely and carefully in order to operate it safely and make the best use of it. Due to... - Page 3 Diagram Title Page Generator Parts ………………………………………………………………………………………….. Control Panel Features…………………………………………………………………………………. Display Function………………………………………………………………………………………….. Recommended Engine Oil Type…………………………………………………………………….. Adding Oil Procedure…………………………………………………………………………………… Outside Operation………………….……………………………………………………………………. Disconnecting Electrical Loads………………………………………………………………………. Start Position………………………………………………………………………………………………. Recoil Starter………………………………………………………………………………………………. Run Position………………………………………………………………………………………………… Low/ Idle Eco mode Button………………………………………………………………………….. Connecting Electrical Loads………………………………………………………………………….. Stop Position………………………………………………………………………………………………. Distance Guide……………………………………………………………………………………………. Parallel Operation…………………………………………………………………………………………...
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Page 4: Safety Precautions
1. SAFETY PRECAUTIONS This manual provides safety information for Promate PM3750i, including preparation, operation, and maintenance instructions. Before running this generator, please read and observe all warnings and instructions that are provided both on the generator labels and in this instruction manual. Failure to follow the guidelines below may cause personal injury. -
Page 5: Control Features
2. CONTROLS AND FEATURES Read this owner's manual before operating your generator. Familiarize yourself with the location and function of the controls and features. Save this manual for future reference. Generator PM3750i Diagram 1. Generator Parts Handle Fuel Cap Spark Plug Access Cover... -
Page 6: Control Panel Features
2.1 Control Panel Features LCD Multi-meter Parallel Operation Outlet Multi-Function Rotary Button 5V USB/ Type C Grounding Terminal AC 230V- 30A Twistlock AC Circuit Protector AC 230V- 20A Diagram 2. Control Panel Features 2.2 LCD Multi-meter Function Diagram 3. Display Function Low Idle/Eco mode Button Running Time When the generator is in energy-saving mode, this button lights up. -
Page 7: Specifications
3. SPECIFICATIONS Table 1. General Specifications Model PM3750i Surge Power 3750W Rated Power 3000W Rated AC Voltage 230V Rated DC Voltage Rated Frequency 60Hz Phase Single Grounding System (AC) Neutral Floating Engine Type Single Cylinder, 4-Stroke OHV Air Cooled Engine Displacement... -
Page 8: Before Starting
The Promate PM3750i is designed and rated for continuous operation at ambient temperatures of up to 40°C. If needed, this product can be operated at temperatures ranging from 15°C - 50°C for short periods. If the product is exposed to temperatures outside of this range during storage, it should be brought back within this range before operation. -
Page 9: Operation On High Altitude
To operate at high altitudes, a high-altitude carburetor main jet is required. Contact Promate Service to acquire the alternate main jet and installation instructions. Diagram. 6 Outside Operation Using an alternative main jet at elevations below the specified minimum altitude can cause engine Never use the generator in wet or damp locations. -
Page 10: Starting The Generator
(Diagram 7). few minutes after each initial start-up to allow the engine and generator to stabilize. Promate PM3750i is equipped with LOW IDLE/ECO MODE Button (Diagram 11). Engaging this switch allows the system to regulate the engine speed and automatically adjust its fuel consumption to match the required load. -
Page 11: Connecting Electrical Loads
(Diagram 5.2 Connecting Electrical Loads 3. Turn the multifunction switch to the “stop” The Promate PM3750i has undergone pre-testing position. and adjustment to handle its full capacity. Before starting the generator, unplug all loads. Apply load only after the generator has started. -
Page 12: Parallel Connection
Low Oil Shutdown immediately. Promate PM3750i is equipped with low oil To extend the life of your generator and connected shutdown. If the oil level becomes lower than the devices, perform the following steps on adding... -
Page 13: Maintenance Storage
harm tools and appliances powered by the 5. Start one of the generators and wait until the generator. To avoid damaging the generator, do OUTPUT READY INDICATOR LED lights up. not connect or disconnect parallel cables while it is 6. Start the second generator and wait until the running. -
Page 14: Maintenance Schedule
Change the type of Replace Spark Plug engine oil used depending on the weather. Inspect/Adjust Valve Clearance* * To be performed by Promate Service. Check the engine oil level before each use or every 8 hours of operation. TIP:... -
Page 15: Spark Plug Maintenance
Change the Engine Oil 3. Remove spark plug (A) using the provided wrench. 4. Inspect the spark plug for any damage, and Change the engine oil according to preventive clean with a wire brush before reinstalling. If maintenance schedule (Table 2). the insulator is cracked or chipped, spark plug should be replaced. -
Page 16: Cleaning The Spark Arrestor
TIP: If the air filter element has been damaged, Promate PM3750i is equipped with a spark arrestor replace it with a new one. that has been evaluated by the fire prevention 4. Reinstall the air filter element, air filter cover regulations. -
Page 17: Generator Maintenance
Table 3. Valve Clearance Maintenance and well-ventilated area out of direct sunlight. Shut off the fuel valve. Schedule Long Term Storage (over one year) Intake Valve Exhaust Valve For long term storage, the gasoline must be Valve 0.004~0.006 inch 0.006~0.008 inch drained from the gasoline tank and carburetor Clearance 0.1~0.15 mm... -
Page 18: Draining The Float Bowl
Diagram 23. Draining the Float Bowl Risk of fire and Explosion Fuel and vapors are extremely flammable and explosive. Store fuel in a well-ventilated area. Keep fire and spark away. Failure to do so will result in death or serious injury. Verify if the machine has properly cooled before covering or storing the machine. -
Page 19: Troubleshooting
10. Flooded 10. Wait 5 minutes and re-crank engine. 11. Excessively rich fuel mixture. 11. Contact Promate Service. 12. Intake valve stuck open or closed. 12. Contact Promate Service. 13. Engine has lost compression. 13. Contact Promate Service. -
Page 20: Service Information
The Company will not pay for repairs or To order replacement parts and consumable parts, adjustments to the product, or for any costs of please contact Promate Service and be ready with labor performed without the Company's prior the following information: authorization. -
Page 21: Exploded Diagram & Part List
11. EXPLODED DIAGRAM AND PART LIST Model: PM3750i... -
Page 22: Generator Part List
PART LIST Table 5. Generator Part List NO. Part Number Description Qty. NO. Part Number Description Qty. 23 20130-00661-01 Fuel tank assembly 1 30111-00088-00 Cross bolt M5*14 24 34037-00003-00 Filter 2 30111-00008-00 Cross bolt M5*10 25 34024-00031-00 Clamp B10.5 3 30111-00070-00 Cross bolt M4*12 26 34023-00360-00 Fuel Pipe 4 31026-00388-00 Switch knob 27 20202-01044-00 Muffler assembly...
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