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Model G121 & G122
Guardian 12v Battery Operated Grease Gun
Safety
Read and carefully observe these operating instructions before
unpacking and operating grease gun. Operate this tool only
after safety instructions and this operation manual are fully
understood.
Never operate this tool in explosive atmospheres. Electric
power tools can emit sparks that may ignite flammable
liquids, dust, or fumes.
Extreme pressure may cause nozzle extension or whip
hose to burst. Use only Lincoln approved high pressure
hose and follow the whip hose instructions and warnings.
Grease gun can develop high pressure – up to 4,000 PSI
(276 Bar). Use safety glasses and gloves for protection
during operation.
Keep hands clear of the exposed rubber portion of hose.
Do not use battery charger in damp or wet locations.
When battery pack is not in use, keep it away from other
metal objects like: paper clips, coins, keys, nails, screws, or
other small metal objects that can make a connection from
one terminal to another. Shorting battery terminals together
may cause sparks, burns, or fire.
Use only accessories that are recommended for use with
the Guardian Battery Operated Grease gun. Only acces-
sories that are capable of 4,000 psi (476 bar) Working
Pressure should be used.
Page Number - 2
PERSONAL SAFETY
1. Use only Lincoln branded 1218, 1224, 1230 or 1236 outlet
whip hoses. Grease injection injuries are a very serious
injury. Hold the hose only in the area of the spring guard.
2. Avoid accidental starting. Be sure switch is not depressed
when inserting battery pack.
3. Do not bend the hose so that it becomes kinked.
4. Replace the hose at the first sign of wear, kink or damage
to the outside jacket.
General Description
The Guardian Battery Operated Grease Gun was developed
for the purpose of manual lubrication of grease points and in-
cludes a pressure relief valve (Item 1 in diagram) to protect the
electric motor from excessive pressure (4000 PSI or 276 Bar)
and to identify a blocked bearing, fitting or lubrication line.
Appropriate Use
This grease tool was designed to pump and dispense lubricant
using 12.0 volt battery power. The maximum specification
ratings should not be exceeded. Any other use not in accor-
dance with instructions will result in loss of claim for warranty
or liability.
Models and Components
Sales Models
Hose
G121
1230*
G122
1230*
*Lincoln brand
Specifications
Operating Power, Volt
Maximum Operating Pressure, PSIG (bar)
Grease Reservoir Capacity, oz. (cm³)
Lubricant (Grease)
Weight, Lbs. (Kg)
Accessories:
Battery Model
Output, VDC
Capacity, mAh
Battery Charger Model
Charge time
Input, VAC
Outlet Hose Model
Hose Pressure Rating, psi (Bar)
Length of the Hose, In (mm)
Battery
Charger
G915
G920
G915 (2ea)
G920
12.0
4,000 (276)
14.5 (411)
Up to NLGI #2
7.8 (3.5)
G915
12.0
1300
G920
1 Hour
120 V, 60 Hz
1230*
7,500 (517)
30 (760)
Form 402106
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