North Star 27500 owner manual Pre-Start Up Preparations, Operating Speed

Models: 27500

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PRE-START UP PREPARATIONS

Device

Running Watts

Air Conditioner (12,000 Btu)

1700 (a)

Battery Charger (20 Amp)

500

Belt Sander (3”)

1000

Chain Saw

1200

 

 

Circular Saw (6-1/2”)

900

Coffee Maker

1000

Compressor (1 HP)

2000 (a)

Compressor (3/4 HP)

1800 (a)

Compressor (1/2 HP)

1400 (a)

Curling Iron

700

 

 

Dishwasher

1200

Edge Trimmer

500

Electric Nail Gun

1200

Electric Range (one element)

1500

Electric Skillet

1250

Freezer

800 (b)

 

 

Furnace Fan (1/3 HP)

1200 (a)

Hair Dryer

1200

Hand Drill (1”)

1100

Hand Drill (1/2”)

875

Hand Drill (3/8”)

500

Hand Drill (1/4”)

250

 

 

Hedge Trimmer

450

Home Computer

150

Impact Wrench

500

Jet Pump

800 (a)

Lawn Mower

1200

Light Bulb

100

 

 

Microwave Oven

700

Milk Cooler

1100 (a)

Oil Burner on Furnace

300

Oil Fired Space Htr (140,000 Btu)

400

Oil Fired Space Htr (85,000 Btu)

225

Oil Fired Space Htr (30,000 Btu)

150

 

 

Oven

4500

Paint Sprayer, Airless (1/3 HP)

600 (a)

Paint Sprayer, Airless (handheld)

150

Radio

200

Refrigerator

600 (b)

 

 

Slow Cooker

200

Submersible Pump (1-1/2 HP)

2800 (a)

Submersible Pump (1 HP)

2000 (a)

Submersible Pump (1/2 HP)

1500 (a)

Sump Pump

600 (a)

Table Saw (10”)

2000 (a)

Television

500

Toaster

1000

Vacuum cleaner

250

VCR

70

Water Heater

3000

Weed Trimmer

500

(a)Hard-starting motors require 3 to 5 times the rated running watts.

(b)These loads may require up to 15 minutes to restart due to its normal build up of compressor head pressure.

NOTE: For extremely hard to start loads such as air conditioners and air compressors, consult the equipment dealer to determine the maximum wattage.

PRE-START UP PREPARATIONS

Your generator has been thoroughly tested prior to shipment from the factory. However, damage can occur during shipping, so be sure to check for damaged parts, loose or missing nuts and bolts. If the these problems occur, call Customer Service at 1-800- 270-0810.

GROUNDING - All units must be grounded. Drive a 3/4” or 1” copper pipe or rod into the ground close to the generator. The pipe/rod must penetrate moist earth. Connect an approved ground clamp to the pipe. Run a 8 gauge wire from the clamp to the generator ground screw. Do not connect to a water pipe or a ground used by a radio system.

OPERATING SPEED

The generator must be run at the correct speed in order to produce the proper electrical voltage and frequency.

The output voltage should be checked to ensure the generator is working properly subsequent to connecting a load to the generator. Failure to do so could result in damage to equipment plugged into the unit and possible injury to the individual.

All engines have a tendency to slow down when a load is applied. When the electrical load is connected to the generator, the engine is more heavily loaded, and as a result the speed drops slightly. This slight decrease in speed, together with the voltage drop within the generator itself, results in a slightly lower voltage when the generator is loaded to its full capacity than when it is running with no load. The slight variation has no appreciable effect in the operation of motors, lights and most appliances. Electronic equipment and clocks will be effected if correct RPM is not maintained. See Load vs. Output chart

Load

 

Output

 

Percent of

Speed

Frequency

 

Generator

Generator

(RPM)

(Hz)

 

voltage at 120V

Output

 

 

 

Receptacle

0 %

3780

63.0

 

125V

50 %

3600

60.0

 

122V

 

 

 

 

 

100 %

3480

58.0

 

118V

Output voltage should be checked periodically to ensure continued proper operation of the generating plant and appliances, it can be checked with a portable meter. Frequency can be checked by using an electric clock with a sweep second hand. Timed against a wrist watch or a stop watch the clock should be correct within +/- 2 seconds per minute. All speed setting adjustments should be done by a qualified technician.

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North Star 27500 owner manual Pre-Start Up Preparations, Operating Speed