Pull line blowing in conduits (ø 18-50 mm)
EZ50 Operating manual version 11/2018
page 12 / 24
7.
Blowing mode with EZ50
1. Duct ends must be cut off cleanly and evenly
2. Choose the duct end on higher level to blow the pull line
3. Make sure that line brake is applied
A
4. Fit appropriate nozzle / joints to the conduit diameter
(use a max 2 to 3 joints)
B
5. Firstly blow the duct through with air only (max. 30 sec) to blow dirt, dust,
water out
6. Position control person near the duct end / exit
C
7. Check quantity of air exiting (Caution: wear protective goggles/glasses)
8. Make a small loop at the end of the pull line (max 2 to 3 cm, shorten the
overhanging end of the string) or attach the bead
D
9. Release line brake
E
10. Insert the loop / bead in the duct and place the nozzle
11. Start blowing without interruption during max. 30 seconds (thermal protection
switch)
12. Observe the uncoiling procedure in the pull line cylinder
F
13. DO NOT block the air inlet / grid on the rear of the device with clothing or
body!
14. Control person: once the pull line has come out, stop the air flow by putting
your finger over the end of the duct (prevents further uncoiling of the line)
15. Stop blowing and immediately stop the air flow closing the nozzle with your
finger
16. Apply line brake
17. Cut off the pull line
18. Secure the blown pull line to the duct ends
The line brake must always be applied when device is not in use!
