6. OPERATION
6.1 INITIAL OPERATION
Before cycling the channel penstock, make sure there are no foreign deposits or materials on the seals, guides or
sealing area. Slide seals could be damaged if the area is not cleaned and coated with a light grease. Please refer
to section “Materials needed for maintenance and seal replacement” on page 11 for detailed information about the
required grease type.
Manual operation:
•
Apply a light grease on the stem before initial operation after the installation. If the operation is difficult due to high
torque, stop operation of the slide and check stem alignment.
Electric motor:
•
Refer to the Electric Motor Instruction Manual section before cycling the penstock. Manually open the slide
approximately 10 cm. before the initial electric motor operation. Check the motor rotation to assure proper direction
of the slide travel according to the motor operation switch (open/close).
•
Special attention should be taken when the slide is almost fully open or fully closed. If the actuator does not stop
once the fully open or fully closed position is reached, stop immediately and adjust the limit and torque switches
(Refer to motor manual).
6.2 OPERATION
•
CAUTION! Do not force the operator to close the slide, as it may cause damage to the stem and it does not improve
the sealing system.
•
The channel penstock is closed by a clockwise rotation, and opened by a counter-clockwise rotation of the operator.
•
The frame incorporates a slide stopping device to stop the slide when it reaches the fully opened position.
•
The channel penstock is designed to be self-locking, so that the slide maintains its position in open, closed or
intermediate positions.
INSTALLATION & MAINTENANCE INSTRUCTIONS - ORIGINAL VERSION
AVK CHANNEL PENSTOCKS
SERIES 772/71
Page 9/12
MI ChannelPenstock772 rev AB August 2014 GB
