5
JLC680-2 Rev AA
April 2019
SECTION II — SPECIFICATIONS
Coffing JLC series electric chain hoists are rugged, portable hoists
that provide quick, precise lifting. The hoists are constructed of
tough, but lightweight, die cast aluminum alloy housings. An oil bath
transmission, equipped with heat-treated, alloy steel gears and an
overload limiting clutch, provides smooth and reliable operation.
With a pushbutton station that fits comfortably in one hand, the
operator can safely control the hoist while the other hand is free to
guide the load. The electrical controls use a low voltage circuit (24V
standard, 115V optional). Terminal blocks allow for easy voltage
conversions on dual-voltage models.
Other features that ensure the safe operation of Coffing electric
chain hoists include a magnetic disc brake that delivers sure
stopping and secure holding of the load. Adjustable upper and lower
limit switches regulate the load travel. As a standard, hooks are
supplied with safety latches. For additional safety, a chain stop is
attached to the slack end of the load chain.
Coffing electric chain hoists are designed and tested in accordance
with the American Society of Mechanical Engineers Code
B30.16, “Safety Standard for Overhead Hoists.” Hoists are built in
compliance with CSA, file number LR 44484. Made in U.S.A.
Table 1 - Hoist Specifications
Model
Hoist Capacity
(lbs)
Lifting
Speed (fpm)
HP
Reeving
JLC0232
250
32
1/4 1/2
Single-Chained
JLC0516
500
16
1/2
Single-Chained
JLC0532
500
32
1/2
Single-Chained
JLC1016
1000
16
1/2
Single-Chained
JLC1032
1000
32
1
Single-Chained
JLC2016
2000
16
1
Single-Chained
JLC4008
4000
8
1
Double-Chained
*Note: JLCET models are equivalent to the corresponding JLC, but
are supplied with a push-type trolley. Reference in this manual to
JLC models also applies to JLCET models.
Table 2 - Motor Amperage of 1-Speed Hoist Models
Hoist HP
Full Load Amps
1-Phase
115/230V
3-Phase
208V
230/460V
575V
1/4
N/A
1.9
1.7/.85
.7
1/2
8.4/4.2
2.3
2.1/1.05
.7
1
14.8/7.4*
4.6
3.9/1.95
1.6
* The 1HP, 115/230V models (JLC1032-1, JLC2016-1, JLC4008-1) must
have a dedicated power circuit rated for at least 20A, 125V when they
are wired for 115V. It is not unusual for these models to draw up to 20
amps at 115V when lifting at rated capacity depending on the quality of
the voltage source.
Table 3 - Motor Amperage of 2-Speed Hoist Models
Hoist HP
(fast/slow)
Full Load Amps for 3 Phase Only (fast/slow)
208v
230V
460V
575V
0.25/0.083
2.0/1.9
2.2/2.2
0.9/0.9
0.64/0.71
0.5/0.17
3.8/3.2
3.7/3.0
1.35/1.25
1.15/1.05
1/0.33
4.6/5.8
5.0/3.5
2.25/1.55
2.1/1.4
NOTE: The above data is the nominal motor current at full load.
At full load, it is not unusual for the hoist to draw in excess of the
values listed when lifting. It is critical to ensure that the voltage at
the reversing contactor does not drop more than 10% below the
nominal voltage while lifting a load. Low voltage will result in higher
amp draw, damage to the hoist, and potential fire hazards. Coffing
Hoists is not responsible for any damages caused by an inadequate
power source.
Failure to comply with Safety precautions outlined throughout
this manual can result in serious injuries or death. Before using
this hoist, each operator should become thoroughly familiar with
all warnings, instructions and recommendations in this manual.
SECTION III — INSTALLATION
1. Before installing the hoist, check the following:
a. Make sure all supporting structures and attaching devices
are strong enough to hold your intended loads. If in doubt,
consult a qualified structural engineer.
b. Provide proper branch circuit protection for the hoist as
recommended in the National Electrical Code.
c. The power supply should be plus or minus 10% of the
voltage specified on the motor nameplate. It is critical to
use adequate sized power cables, especially with 1- phase
hoists
(See Table 5, page 11)
. Be sure dual voltage hoists
are connected or wired to correspond with your power
supply (See WIRING, page 9).
d. Installation area must provide operating conditions for the
operator including sufficient room for the operator and
other personnel to stand clear of the load at all times.
e. For installations where the slack chain hanging from the
unit may be objectionable or hazardous, the use of a chain
container is recommended (See CHAIN CONTAINER,
page 5).
2. JLCET models come with a Coffing ETB push-type trolley and
an adaptable suspension lug. ETB trolleys are made to run
on American Standard I-Beams and Wide Flange Beams with
flange widths up to 8". For assembly refer to the instructions
provided with the trolley. The hoist lug must be centered
with the sideplates (±1 washer). Due to the lug thickness, the
washer placement between each sideplate and the lug may
differ by 1 less washer than the generic instructions specify. For
installations where the trolley can not be slid onto the end of a
beam, leave the load pin nuts loose enough to get the wheels
around the beam flange. Check the flange width setting before
tightening the nuts to
125 ft-lbs
. Be sure to have end stops on
your beam.
3. Before operating the hoist, be sure to observe the following:
a. ALWAYS DISCONNECT HOIST FROM POWER SUPPLY
before removing electrical cover or when making any
electrical connection in the hoist or pushbutton station.
b. The ground wire (green colored) of the power cable should
always be connected to a suitable ground by means of
a screw or clamp. An alligator clip does not make a safe
ground connection.
c. When installing a three-phase hoist, make only temporary
connections at the power source. Push the “UP” button
and observe the direction of the load block. If it raises, the
phasing is correct and permanent connections may be
made at the power source. If the load block lowers when
the “UP” button is pushed, release the button immediately
since the limit switches will not operate to protect the hoist
from over-travel. Reverse any two wires (except the green
ground wire) at the power source to correct the load hook
direction (phasing). Do not change connections in the hoist
or pushbutton assembly.
d. Make sure load chain is not twisted as it travels into
the hoist.
e. Operate hoist in a hanging position only. Hoist should
be permitted to align itself for a straight line pull. Do not
attempt to pull around corners.
f. Read ASME-B30.16 Safety Code for Hoists.
4. Lubricate the chain as necessary, see LUBRICATION, page 9.
5. Check the function of the limit switches. Before placing hoist in
operation, check limit switch settings. Operate pushbutton until
near stop point and inch into stop limit, both top and bottom. If
either switch is not correct, adjust according to LIMIT SWITCH
ADJUSTMENT, page 8.
Содержание Coffing JLC Series
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Страница 37: ...35 JLC680 2 Rev AA April 2019 FIGURE 24 CHAINING PARTS...
Страница 39: ...37 JLC680 2 Rev AA April 2019 NOTES...
