15
14
Piping
• Select either standard or relay system piping per the examples below.
• When only one system is used with the control board (HKA and EKE models), place a
blind stopper in the unused system.
• In the control board (HKA and EKE models), the Knocker can be connected to line A or
line B, but note that the pressure accumulation and percussion operations are reversed
on one system.
1. EXAMPLE IN STANDARD PIPING: A/B/C
A. When using a three-way solenoid valve:
B. When using the HKA and EKE model exclusive control board:
C. When using the air operation controller KNR-CONTROL AOC model:
5/16 OD
KNR-CONTROL AOC
OFF
ON
When using the air operation controller KNR-CONTROL AOC
Air Knocker
Exhaust
Filter Regulator
Compressor
Control panel
Power Source
5/16 OD
A line
B line
Exhaust
When using the HKA, EKE exclusive control panel
Hopper
Air Knocker
Filter Regulator
Compressor
2. TUBE LENGTH IN STANDARD PIPING
• Make air lines as short as possible to maximize the impact force.
• The maximum length of a piping tube changes with model, air pressure,
and control unit, and may decrease Knocker effectiveness by 10 to 20%.
• When adding another pipe, the length of the tube from the branch point to each Knocker
should be equal.
• Avoid extreme bending and adding extra lines. It may affect operation and impact force
especially in units furthest from the air supply.
• It is recommended to set the minimum tube pressure at 44 psi to maintain stable
performance. Impact force can be maintained by increasing air pressure.
• When arranging the piping between the Knocker and the control devices, use nylon or
urethane tube which has a OD of 5/16 in.
A. When using the solenoid valve:
B. When using the HKA and EKE model
exclusive control board (per system):
C. Maximum Tube Length (ft) between KNR-CONTROL AOC and Knocker:
Model (KNR-)
Tube Length (ft)
15-SS / 15
6.5
20 / 20-SS / 20
6.5
30 / 30-SS / 30-DI
6.5
40 / 40-SS / 40-DI
9.75
60 / 60-SS / 60-DI
26.25
80 / 80-DI
32.75
100 / 100-DI
80 / 80-DI
100 / 100-DI
40 / 40-SS / 40-DI
60 / 60-SS / 60-DI
30 / 30-SS / 30-DI
20 / 20-SS
15-SS
66
49
32
16
0
Pressure (PSI)
Tube length (feet)
When using solenoid valve
44
58
73
87
102
Pressure (PSI)
80 / 80-DI
100 / 100-DI
40 / 40-SS / 40-DI
60 / 60-SS / 60-DI
30 / 30-SS / 30-DI
20 / 20-SS
15-SS
262
197
131
66
0
44
58
73
87
102
Tube length (feet)
When using the HKA, EKE model exclusive control panel (per system)
When using with three-way solenoid valve
Compressor
Filter Regulator
Timer1
Complex timer or Switch
Timer2
Air Knocker
Hopper
OUT
IN
EXH