88
CPA operating instructions
4.4 AIR PRESSuRE CONNECTIONS
The operating pressure is 5 – 7 bar.
Note:
The minimum pressure is 5 bar since otherwise perfect functioning
of the brake is not ensured.
The compressed air must be clean and enriched with oil to guarantee
adequate lubrication. We therefore recommend the use of an oiler that
works on the ram-air principle with an adjustable jet. 1 cm
3
of oil amounts
to 25 – 30 drops, 1 – 3 drops are required for every m
3
of air consumed
under normal conditions (see following table).
In any case a lubricator unit comprising a filter and an oiler with a pressure
regulator in-between (regulator independent of supply pressure, adjustable
and with pressure gauge) should be used. For selecting a unit consider the
flow rate and ensure it is not fitted more than 3 m away from the air hoist.
Refilling is possible during operation without disconnecting the air supply.
For the oiler we recommend a resin and acid-free lubricating oil (SAE
5W – SAE 10W), as thicker oils tend to clog the vanes and impair starting
and performance of the motor.
The air hose for supplying the unit should have an inner diameter of at
least ½" (13 mm). The air connection is R1".
The connections in the control pendant must never be changed!
4. After the first side has been adjusted, the second side can be pre-
assembled. Distribute the washers in such a way that the centre
cross bar (item 4) is in the middle of the distributed washers.
5. Place the entire pre-assembled unit onto the beam.
6. Fit the second side plate and place on the required washers as on the
other side. Tighten the nut (item 2) with a tightening torque of 203 Nm.
7. Then travel the entire fitted unit to check the following:
• Is the specified side clearance (dimension “X” on each side 2,5
– 3 mm) between the trolley wheel flange and the beam edge
maintained on each side?
• Is the centre crossbar and thus the hoist centred below the beam?
• Has the self-locking nut (item 2) been tightened?
Fitting the hand chain
(only trolley with gear drive)
Slide the endless hand chain from above through the two holes on the
hand chain guide. Connect both ends by means of a hand chain link.
Note:
Do not twist the hand chain when fitting.
Geared-type trolleys are moved by pulling the hand chain which belongs
to the geared trolley.
Shortening or extending the hand chain
(only model CPA with gear drive)
Adjust the length of the hand chain for driven trolleys so that the distance
to the floor is 500 – 1000 mm.
1. Look for the open link of the hand chain and bend to open.
2. Shorten or extend the chain.
Note:
Always add or remove an even number of chain links.
3. Bend the chain link to close it again.
CPA 1-13/2-10/5-5
Operating pressure (flow pressure)
bar
P
5
6
7
Nominal output
kw
P
0,29
0,4
0,45
Drive speed (under load, 80 kg)
1/min
n
under load
4600
6300
6400
Drive speed (unloaded)
1/min
n
unloaded
5800
6500
6630
Drive speed (under load)
m
3
/min
v
0,75
0,9
1,0
CPA 2-31/5-17/10-9
Operating pressure (flow pressure)
bar
P
5
6
7
Nominal output
kw
P
1,4
1,86
2,2
Drive speed (under load, 80 kg)
1/min
n
under load
2850
3000
3150
Drive speed (unloaded)
1/min
n
unloaded
5170
5500
5775
Drive speed (under load)
m
3
/min
v
1,68
2,1
2,42
