Voltmaster C-Series User manual

Voltmaster
Engine-Driven
Generators
C-Series
S-Series
SG-Series
D-Series
LN-Series
T-Series
Owner’s Manual
July 2011

Owner’s Manual i
Voltmaster Engine-Driven Generators
Table of Contents
1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Read before using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Generator models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.1 C-Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.2 D-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.3 S-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.4 LN-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.5 SG-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.6 T-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Where to obtain service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Operating safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Engine safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Operator safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.2 California Proposition 65 . . . . . . . . . . . . . . . . . . 9
2.2.3 Spark arresters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Maintenance and storage safety. . . . . . . . . . . . . . . . . . . . . 10
3Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Before starting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.2 Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.3 Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.4 Battery for electric-start models . . . . . . . . . . . 15
3.1.5 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.6 LN-Series (propane/natural gas) models . . . 16
3.1.7 Standby installations . . . . . . . . . . . . . . . . . . . . . . 18
3.1.8 Preparing for use. . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1.9 After long-term storage . . . . . . . . . . . . . . . . . . . 20

ii Owner’s Manual
Voltmaster Engine-Driven Generators
3.2 Operating the generator. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.1 Models LR50EL and LR60EL. . . . . . . . . . . . . . . . 21
3.2.2 SG-Series (SafeGen/RoofPro) models . . . . . . 21
3.2.3 Air in fuel line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.4 Electrical loads. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.5 First-time use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.6 Starting the generator . . . . . . . . . . . . . . . . . . . . 26
3.2.7 Stopping the generator . . . . . . . . . . . . . . . . . . . 27
3.3 General maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.1 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.2 LN-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.3 Changing the oil . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.3.4 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Appendix
A Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Owner’s Manual iii
Voltmaster Engine-Driven Generators
List of Figures
Figure 3-1 Typical standby installation. . . . . . . . . . . . . . . . 19
Figure 3-2 Fuel mixture adjustment screw . . . . . . . . . . . . 26
Figure A-1 Formula for calculating wattage . . . . . . . . . . . 33
List of Tables
Table 3-1 Recommended oil grade . . . . . . . . . . . . . . . . . . 14
Table 3-2 Battery type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table A-1 Approximate current requirements for
electric motors . . . . . . . . . . . . . . . . . . . . . . . 34
Table A-2 Minimum extension cord gauge . . . . . . . . . . . 35
Table A-3 Approximate equipment power
requirements. . . . . . . . . . . . . . . . . . . . . . . . . 36

iv Owner’s Manual
Voltmaster Engine-Driven Generators

Owner’s Manual 1
Voltmaster Engine-Driven Generators
1 Introduction
1.1 Read before using
This is an industrial-type electric generator. This equipment is
potentially hazardous and could cause physical injury or even death
if improperly used. Before attempting to operate this equipment:
■Check to ensure no damage has occurred in transit
■Read this manual thoroughly
■Follow all instructions carefully
■Read engine manufacturer’s instructions
By following these instructions, you will enjoy safe and trouble-free
operation of your generator.
WARNING
Improper use of equipment could cause
serious injury or death.
Prior to using this equipment, carefully read,
understand, and observe all instructions in this
manual and the engine manual.

2 Owner’s Manual
Voltmaster Engine-Driven Generators
1.2 Generator models
This instruction manual covers the following generator models:
1.3 Specifications
1.3.1 C-Series
C-Series
Contractor/Rental Models
D-Series
Diesel Models
LR30
LR55
LR60
LR70
LR80
LR105
LR150
LR180
LR50
LR60
LR130
S-Series
Standard-Duty Models
LN-Series
Liquid Propane/Natural Gas Generators
A25
A30
A50
A55
A60
LA50
LA55
LA60
LR70
LR80
LR105
LR105-LPA
LR105-NGA
LR150-LPA
LR150-NGA
SG-Series
SafeGen/RoofPro Generators
T-Series
Three-Phase Generators
LR70-SG
LR105-SG
LR150-SG
LR50-208
LR50-480
LR80-208
LR80-480
LR120-208
LR120-480
LR180-208
LR180-480
Model
Max.
watts
Rated
watts
Rated
voltage
Rated
amps
Fuel
capacity
(gal.)
Run time
1/2 load
(hrs.)*
*Depending on engine model.
Run time
full load
(hrs.)*
LR30 3000 2400 120 20 3 8.3–9.0 7.9–8.6
LR55 5500 4500 120/240 37.5/18.8 5 8.3–10.9 5.7–8.3
LR60 6000 5000 120/240 41.6/20.8 5 10.4 7.6
LR70 7000 6500 120/240 54.2/27.1 8 9.5–13.4 7.7–10.3
LR80 8000 7500 120/240 62.5/31.3 8 9.9 6
LR105 10,000 9500 120/240 79.2/39.6 8 8.5–9 5.8–6
LR150 15,000 12,000 120/240 100/50 8 6.9 6
LR180 18,000 15,000 120/240 125/62.5 18 11.5 7.2

Owner’s Manual 3
Voltmaster Engine-Driven Generators
1.3.2 D-Series
1.3.3 S-Series
1.3.4 LN-Series
Model
Max.
watts
Rated
watts
Rated
voltage
Rated
amps
Fuel
capacity
(gal.)
Run time
1/2 load
(hrs.)
Run time
full load
(hrs.)
LR50 5000 4000 120/240 33.3/16.7 5 14 10.5
LR60 6000 5500 120/240 45.8/22.9 5 14 10.5
LR130 13,000 12,000 120/240 100/50 8 9.6 8
Model
Max.
watts
Rated
watts
Rated
voltage
Rated
amps
Fuel
capacity
(gal.)
Run time
1/2 load
(hrs.)*
*Depending on engine model.
Run time
full load
(hrs.)*
A25 3000 2400 120 20 0.75 2.4 1.5
A30 3000 2400 120 20 0.75–1*2.5–3 2.2–2.8
A50 5000 4000 120/240 33.3/16.7 1 1.7 1.2
A55 5500 4500 120/240 37.5/18.8 1.6 3.2 2.5
A60 6000 5000 120/240 41.6/20.8 1.7 4 2.9
LA50 5000 4000 120/240 33.3/16.7 5 8.5 6
LA55 5500 4500 120/240 37.5/18.8 5 10.8–10.9 7.6–8.3
LA60 6000 5000 120/240 41.6/20.8 5 10.4 7.6
LR70 7000 6500 120/240 54.2/27.1 8 9.5–13.4 7.7–10.3
LR80 8000 7500 120/240 62.5/31.3 8 6 6
LR105 10,000 9500 120/240 79.2/39.6 8 8.5–9 5.8–6
Model
Max.
watts
Rated
watts
Rated
voltage
Rated
amps
Fuel
type*
*LP=liquid propane NG=natural gas
Run time
1/2 load
Run time
full load
LR105-LPA 9000 8500 120/240 70.8/35.4 LP 1.2 gal./hr. 1.6 gal./hr.
LR150-LPA 12,000 11,000 120/240 91.7/45.8 LP 1.6 gal./hr. 2.2 gal./hr.
LR105-NGA 8500 8000 120/240 66.7/33.3 NG 145 CFH 200 CFH
LR150-NGA 11,000 10,500 120/240 87.5/43.8 NG 190 CFH 264 CFH

4 Owner’s Manual
Voltmaster Engine-Driven Generators
1.3.5 SG-Series
1.3.6 T-Series
1.4 Where to obtain service
Before calling for service, please have the generator model and
serial number ready. This information is displayed on the serial
number tag, which is adhered to the generator.
Contact our service department using the following information:
Wanco Inc.
5870 Tennyson Street
Arvada, Colorado 80003
800-730-3927
fax [phone]
www.voltmaster.com
[e-mail]
Model
Max.
watts
Rated
watts
Rated
voltage
Rated
amps
Fuel
capacity
(gal.)
Run time
1/2 load
(hrs.)*
*Depending on engine model.
Run time
full load
(hrs.)*
LR70 7000 6500 120/240 54.1/27 8 13.4 10.3
LR105 10,000 9500 120/240 79.2/39.6 8 8.5–9 5.8–6
LR150 15,000 12,000 120/240 100/50 8 5.7–6.9 5–6
Model
Rated
watts KVA
Rated
voltage
Rated
amps
Fuel
capacity
(gal.)
Run time
1/2 load
(hrs.)*
*Depending on engine model.
Run time
full load
(hrs.)*
LR50-208 5000 6.2 208 17.4 5 10.4–14 7.6–10.5
LR50-480 5000 6.2 480 7.5 5 10.4–14 7.6–10.5
LR80-208 8000 10 208 27.8 8 9.9 6
LR80-480 8000 10 480 12 8 9.9 6
LR120-208 12,000 15 208 41.6 8 6.9–9.6 6–8
LR120-480 12,000 15 480 18 8 6.9–9.6 6–8
LR180-208 15,000 18 208 52 18 11.5 7.2
LR180-480 15,000 18 480 23 18 11.5 7.2

Owner’s Manual 5
Voltmaster Engine-Driven Generators
2 Safety Information
2.1 Operating safety
DANGER
Explosion hazard.
■NEVER operate generator in an explosive
atmosphere or near combustible materials.
■Keep generator, engine, fuel, and other
combustibles away from sparks, open flame,
and burning objects.
■Do not smoke near engine.
■Never use generator to jump-start a vehicle.
■Before filling or draining fuel, stop engine and
allow it to cool.
■Use correct fuel.
■Replace fuel tank cap after refueling.
■Do not mix lubricating oil with fuel.
■Check oil level while filling and do not overfill.
■For electric-start models:
❑Lead acid batteries emit a colorless
explosive hydrogen gas. Keep batteries
away from sparks, open flame, and
burning objects.
❑Do not smoke near batteries.
❑Do not connect or disconnect battery
cables from the battery or engine while
the unit is cranking or operating.

6 Owner’s Manual
Voltmaster Engine-Driven Generators
DANGER
Asphyxiation hazard.
Engine exhaust contains carbon monoxide, a
poison gas you cannot see or smell.
■NEVER operate engine indoors, EVEN IF doors
and windows are open.
■Operate the engine OUTSIDE, far away from
doors, windows, and vents.
■Refill and drain fuel tank only in a well
ventilated area.
■Perform maintenance in a well ventilated area.
WARNING
Shock hazard.
■Use extreme caution when working on or with
electrical components.
■Avoid contact with live terminals and
receptacles.
■Ensure the generator is properly grounded in
accordance with all applicable electrical codes.
■Do not operate generator in rain, snow, or wet
conditions.
■Installation as a standby generator must
comply with all applicable electrical codes, and
requires a suitable power-transfer device to
isolate generator from power utility.

Owner’s Manual 7
Voltmaster Engine-Driven Generators
■Before using this equipment, carefully read, understand, and
observe all instructions in this manual and the engine manual.
■Before using this equipment for the first time, visually inspect the
unit for loose or missing parts and damage that may have occurred
in shipment.
■This equipment should not be operated by persons under 18 years
of age.
■ALWAYS wear appropriate protective clothing, shoes, and other
protective devices, as required by the job.
■ALWAYS wear appropriate respiratory, hearing, and eye protection.
■NEVER operate this equipment when not feeling well due to fatigue,
illness, or medication.
WARNING
Fire hazard.
■Before transporting generator, drain fuel and
close fuel shutoff valve.
■A hot muffler can ignite flammable materials.
Keep area around muffler free of debris such as
leaves, paper, and cartons.
■Remove all unnecessary grease and oil from
generator surfaces.
■Do not leave any flammable material on
generator while it is running.
CAUTION
Risk of severe burn.
Do not touch the engine, exhaust pipes, or any
engine component until cool.

8 Owner’s Manual
Voltmaster Engine-Driven Generators
■NEVER operate this equipment under the influence or drugs or
alcohol.
■When fueling electric-start engines, do not touch battery cables or
posts to a gasoline supply can.
■Before operating, know the location of the nearest fire extinguisher,
first aid kit, and emergency telephone.
■Keep a fire extinguisher nearby and know its proper use.
Extinguishers rated ABC by the NFPA are appropriate for all
applications. For more information, consult your local fire
department.
■Store fuel only in approved containers and in a well ventilated area.
Exhaust fumes are poisonous; do not inhale.
■Be sure the generator is well ventilated on all four sides.
■Do not operate this equipment in an enclosed area, such as a
recreational vehicle, marine vehicle, under the hood of a car or
truck, or inside a truck or van even with the windows and doors
open. All warranties are voided if the unit is operated in such an
area.
■Keep generator and surrounding areas clean. Remove oily rags and
other material that could create a fire hazard.
■NEVER use the generator with a cover over the unit. The generator
must operate in an open-air environment.
■NEVER service generator or its components while generator is
running. Do not perform service or maintenance while generator is
hot.
■When using generator for backup power, use a suitable power-
transfer device to isolate generator from power utility. Failure to
isolate generator could cause serious injury or death.
■Only a qualified technician should perform repairs on this
equipment, including the installation or replacement of parts and
accessories.
■Use ONLY accessories or attachments that are recommended by the
manufacturer. Unauthorized equipment modifications will void all
warranties.

Owner’s Manual 9
Voltmaster Engine-Driven Generators
2.2 Engine safety
2.2.1 Operator safety
Before using the generator, refer to engine manufacturer’s
documentation for additional engine safety and operating
information.
2.2.2 California Proposition 65
2.2.3 Spark arresters
IMPORTANT!
State and local safety codes specify that, in certain locations,
internal combustion engines that use hydrocarbon fuels must be
used with spark arresters.
A spark arrester is a device constructed of nonflammable materials
specifically for the purpose of removing and retaining carbon and
other flammable particles from the exhaust flow of an internal
combustion engine.
Spark arresters are qualified and rated by the United States Forest
Service. To comply with all applicable laws regarding spark
arresters, consult your local Health and Safety Administrator.
WARNING
Health hazard.
Engine exhaust and some of its constituents are
known to the State of California to cause cancer,
birth defects, and other reproductive harm.

10 Owner’s Manual
Voltmaster Engine-Driven Generators
2.3 Maintenance and storage
safety
DANGER
Explosion hazard.
Do not use gasoline, other fuels, or flammable
solvents to clean parts.
DANGER
Corrosive material.
Battery acid will cause severe burns and
blindness.
■Use extreme care when handling or servicing
batteries.
■Never service batteries while generator is
operating.
■Wear appropriate eye and hand protection.
■Upon contact with skin or eyes, immediately
flush with water and seek medical help.
CAUTION
Moving parts can cause injury.
■Prior to servicing, disconnect spark plug wire to
prevent accidental starting.
■Prior to servicing electric start models,
disconnect negative (–) cable from starter
battery.
■Keep hands, hair, and tools away from moving
parts.
■Do not wear jewelry or loose fitting clothing
while performing maintenance.
■Use extreme caution if making adjustments
while generator is operating.

Owner’s Manual 11
Voltmaster Engine-Driven Generators
■Before servicing, ensure power cannot be started inadvertently
during service.
■ALWAYS keep the generator in proper running condition.
■ALWAYS fix damage to the generator immediately. Repair or replace
broken or worn parts. Only use parts from original manufacturer.
■Replace operation and safety decals when they become difficult to
read.
■When not in use, store equipment in a clean, dry location out of the
reach of children.
■Before storing, drain fuel.

12 Owner’s Manual
Voltmaster Engine-Driven Generators

Owner’s Manual 13
Voltmaster Engine-Driven Generators
3 Operation
3.1 Before starting
3.1.1 Safety
Before operating the Voltmaster generator:
■Read and be familiar with this instruction manual.
■Read and follow all safety instructions (see Section 2, page 5).
■Read and follow instructions in the engine manufacturer’s
documentation.
3.1.2 Fuel
■For gasoline-powered models, use unleaded gasoline, 87 octane or
higher
■For diesel-powered models:
❑In normal ambient temperatures, use diesel fuel No. 2 (DF2)
❑In cold weather, use diesel fuel No. 1 (DF1)
❑JP5 or JP8 turbine fuel may be used with engine derations
Fuel additive
If left to stand in the engine for periods of more than 6 months,
gasoline will tend to form a varnish-like substance that will clog the
fuel system and the carburetor. The result will be a hard-to-start
engine. Check the engine manual or your local dealer for a
recommended gasoline additive that will prevent varnish
formation.
Fuel shutoff valve
If the generator is equipped with a fuel shutoff valve, the valve is
located under the fuel tank.
When using the generator, be sure the valve is open (turned
counterclockwise) to permit the flow of fuel from the tank. During
transport, the valve must be closed.

14 Owner’s Manual
Voltmaster Engine-Driven Generators
3.1.3 Oil
To avoid engine damage, always check oil level and refill oil if
necessary before starting engine:
■Crankcase pressure can blow hot engine oil out the fill tube, causing
severe burns. Always stop the engine before removing the oil cap,
and remove the cap with caution.
■Fill the oil sump to the full mark on the dipstick. Check oil level while
filling and DO NOT overfill. If accidentally overfilled, drain extra oil.
For diesel engines, overfilling will damage engine beyond repair.
■To avoid air bubbles pour oil slowly.
Keep oil level between the minimum and maximum marks on the
dipstick. Engine damage caused by low oil level is not covered by
the engine manufacturer’s warranty.
Low-oil shutdown
Most generator models are equipped with automatic low-oil
shutdown systems. Insufficient oil volume (on low-volume systems)
or pressure (on low-pressure systems) will cause the engine to stop.
For more information, see the engine manual.
Oil type
To select the proper oil:
■For diesel engines, see the engine manual.
■For all other engines, see Table 3-1 for oil grade.
■For gasoline engines, use API Class SG or SH oil (also SG/CD, SG/CE,
SH/CD or SH/CE).
Changing the oil
Change the engine oil as specified in the engine manual. Oil should
be drained while the engine is slightly warm.
Table 3-1. Recommended oil grade
Expected ambient temperature SAE viscosity grade
32°F (0°C) or higher 30
10 to 100°F (–12 to 38°C) 15W-40
0 to 80°F (–18 to 27°C) 10W-30 or 10W-40
–20 to 50°F (–28 to 10°C) 5W-30