41
7.0 Maintenance and Handling
7.1
Load Limiter
7.1.1
The purpose of the load limiter is to prevent using the hoist in an overload situation. When lifting, the
hoist will stop automatically if the load is above the rated capacity of the hoist.
7.1.2
The adjustment is factory set to actuate at approximately125% of rated capacity (based on supply air
pressure of 90 PSI). Note: the load limiter may need adjustment to compensate for air supply
pressures significantly less than 90 PSI.
Figure 7-1
Load Limiter screw adjustment location
7.1.3
Adjustment Procedure
1)
Before proceeding with the load limiter adjustment, note the following:
a.
WARNING!
Adjusting the load limiter involves operating the hoist. Personnel involved in
the adjustment procedure should read, understand, and follow
Section 4
, "Operation".
b. For the adjustment procedure, the hoist should be connected to an air supply (see
Section 3.1
)
and it should initially be without a load on its hook.
c. Start this procedure with an unloaded hoist. All adjustments to the load limiter should be made
with the load in a resting position so that the load chain is not tensioned.
d. For the adjustment procedure: OUT means the counter-clockwise (CCW) direction, and IN
means the clockwise (CW) direction.
e.
The pressure of the air supply at the hoist’s inlet port (acceptable range is 60 to 90 PSI) affects
the performance of your air hoist, including the actuation point of the load limiter. Therefore,
ensure that during the adjustment procedure the air pressure at the hoist's inlet port is the
same as that which the hoist will experience in normal operation. The relationship between air
supply pressure and load limiter actuation is:
for a given load limiter setting, as pressure decreases, the actuation point increases.
f.
When the load limiter is adjusted and working properly, the hoist will operate and lift the load a
short distance before the load limiter automatically stops lifting.
Summary of Contents for TCR Series
Page 12: ...12 Figure 2 3 Dimensions for Manipulator TCR250 Air Hoist inches...
Page 13: ...13 2 3 Part Names Figure 2 4 Hoist Part Identification Diagrams TCR500P 500C 1000P 1000C...
Page 14: ...14 Figure 2 5 Hoist Part Identification Diagrams TCR 1000P2 1000C2 2000P2 2000C2...
Page 16: ...16 Top hook Bottom hook Figure 2 8 Hoist Part Identification Diagrams TCR250C...
Page 17: ...17 Top hook Bottom hook Figure 2 9 Hoist Part Identification Diagrams TCR250P...
Page 18: ...18 Top hook Bottom hook Figure 2 10 Hoist Part Identification Diagrams TCR250M...
Page 51: ...Kito Air Hoists Parts List...
Page 52: ...TCR250 MAIN BODY 52 9 0 Parts List TCR250 Main Body...
Page 54: ...TCR250 VALVE BODY 54 TCR250 Valve Body...
Page 56: ...TCR250 MANIPULATOR CONTROL 56 TCR250M Manipulator Control...
Page 58: ...TCR500 MAIN BODY TCR500 Main Body TCR500 Main Body 58...
Page 60: ...TCR1000 2 Main Body TCR1000 2 Main Body 60...
Page 62: ...TCR1000 Main Body TCR1000 Main Body 62...
Page 64: ...TCR2000 2 Main Body TCR2000 2 Main Body 64...
Page 66: ...TCR3000 Main Body TCR3000 Main Body 66...
Page 68: ...TCR6000 2 Main Body TCR6000 2 Main Body 68...
Page 70: ...Cord Control Valve Body Cord Control Valve Body 70...
Page 72: ...Pendant Control Valve Body 72 Pendant Control Valve Body...
