Controlled Products Systems Group HRG 220-A ST - Manual (Page 73)

Installation and Maintenance Manual
59
Bleeding Air from SwingRiser Hoses using the Bleeder Tool Assembly
Air trapped in the hydraulic systems of SwingRiser (HRG) operators can cause
slow and/or jerky operation. In SwingRiser Twin (HRG 222) systems (two gate
panels operating from a single hydraulic supply), air can prevent the two panels
from synchronizing.
If these symptoms are appearing in your operator, take the following steps to bleed
the air from the hoses between the hydraulic supply and the operator post.
In SwingRiser Twin systems, both posts must be bled at the same time.
The gate will be inoperative during the bleeding process. If traffic needs to
pass, remove the index arm and pivot the gate on the mounting hinges
manually.
Tools required:
_ 7/32‖ Allen wrench (for cover plate screws)
_ Bleeder tool assembly, refer to the HySecurity Price Book for the part
number. A single gate requires one Bleeder tool. A twin gate system
requires two Bleeder tools.
_ Two electrical jumper cables
1. Move the gate(s) to the CLOSE position.
2. Turn off power to the hydraulic supply.
3. Check the oil level in the reservoir and fill it to within ½‖ of the fill hole with
HySecurity Uniflow hydraulic fluid (The correct part number is found in the
HySecurity Price Book.)
4. Remove the cover plate(s) on the stationary base(s) of the post(s).
5. Separate the quick disconnects. Mark the hoses to make note of which hose
connects to which connector in the post - one set should be marked with a red
wire tie.
6. Attach the feed hoses from the hydraulic supply to the quick disconnects on the
bleeder tool. (On Twin post units bleed both posts together with two bleeder
tools.)
7. Jumper out the OPEN and CLOSE Limit Switches on the panel mounted terminal
strip in the hydraulic cabinet below the keypad.
8. Determine how long you need to run the pump to completely circulate fluid through the entire
system. To do this, estimate the total length of hose running from the pump to the post(s) and
back (including any hose coiled up in the pump cabinet). Use the chart below to determine how
long to run the pump and bleed air from the hoses.
Pump Circulation Time
Operator Type Single Post (¼-inch hose) Double Post (¼-inch hose) Single Post (⅜-inch hose) Double Post (⅜-inch hose)
SwingRiser 14 (HRG-A) 20 seconds/100 hose ft 10 seconds/100 hose ft 40 seconds/100 hose ft 20 seconds/100 hose ft
SwingRiser 19 (HRG-B) 25 seconds/100 hose ft 12 seconds/100 hose ft 50 seconds/100 hose ft 24 seconds/100 hose ft
SwingRiser 30 (HRG-C) 40 seconds/100 hose ft 20 seconds/100 hose ft 80 seconds/100 hose ft 40 seconds/100 hose ft
Example: Double post (two posts), each 50 feet away, have 100+ feet of ¼-inch hose per post equaling a total of
200+ feet. Using the chart for a SwingRiser 19 (HRG-B), the pump will need to run for at least 24 seconds.
Feed hoses from
hydraulic supply
Red wire
tie
Bleeder tool
Jumpers