Preventive Maintenance Checklist: HYDRAULIC ACTUATOR, GATE (DELTA) Annual

• Site conducted

• Conducted on

  Date

• Prepared by

• Location

• Work Order Number

• Yes

  No

  N/A

(T)ools, (S)afety Equipment and (M)aterials

• Electrician's/Mechanic's Tool Set

  Yes

  No

  N/A

• Hydraulic oil (10 gallons)

  Yes

  No

  N/A

• Hand oiler and oil

  Yes

  No

  N/A

• Spin-on filter cartridge

  Yes

  No

  N/A

• Grease gun and grease

  Yes

  No

  N/A

• Waste oil container (10 gallons)

  Yes

  No

  N/A

• Pressurized nitrogen bottle

  Yes

  No

  N/A

• Clamp on amp meter

  Yes

  No

  N/A

• Multimeter

  Yes

  No

  N/A

• Megger

  Yes

  No

  N/A

• Cleaning materials

  Yes

  No

  N/A

Safety Guidelines

• Schedule work with operating staff

  Yes

  No

  N/A

• Block traffic and set up alternate security measures

  Yes

  No

  N/A

• Follow site safety rules for lockout and tagout

  Yes

  No

  N/A

• Disconnect power and bleed oil pressure to zero before working on any part of the system

  Yes

  No

  N/A

• Report equipment damage or deficiencies

  Yes

  No

  N/A

• Review and follow manufacturer's O&M instructions

  Yes

  No

  N/A

• Dispose of used oil and filters, properly

  Yes

  No

  N/A

• Record results in the component maintenance log

  Yes

  No

  N/A

Maintenance Procedures

• Check operational limit switches

  Yes

  No

  N/A

• Check all control functions

  Yes

  No

  N/A

• Inspect hydraulic power system

  Yes

  No

  N/A

• Inspect hydraulic hoses for damage and wear

  Yes

  No

  N/A

• Inspect hydraulic pressure system for leaks. Tighten fittings as required

  Yes

  No

  N/A

• Inspect pump motor electrical connections for loose wires, frayed insulation, and signs of overheating

  Yes

  No

  N/A

• Inspect motor coupling and mounting brackets for loose or broken bolts

  Yes

  No

  N/A

• Inspect pump suction strainer. Clean as required

  Yes

  No

  N/A

• Turn off pump/motor power, bleed system pressure to zero

  Yes

  No

  N/A

• Renew oil and replace filter

  Yes

  No

  N/A

• Drain the oil from the reservoir and flush with mineral spirits or clean oil. After wiping down the tank sides and bottom to assure that no contamination remains, replace with clean filtered oil

  Yes

  No

  N/A

• Fill to near top of sight gage. Note: Level should be adjusted when the system is at zero pressure because of oil storage in the accumulator

  Yes

  No

  N/A

• Remove/replace oil filter

  Yes

  No

  N/A

• Check the accumulator pressure while the system is at zero pressure. For Delta units use Delta Charging Kit A02469-31 or equal. If tool is not available, observe the value that the pressure gage jumps to when power is turned on again. (See Hydraulic Se

  Yes

  No

  N/A

• Turn power on and bring system back to operation. Check for oil leaks.

  Yes

  No

  N/A

• Check the accumulator pressure by observing the pressure gage. Recharge the accumulator with nitrogen if its pressure goes below 25% of the hydraulic pressure switch setting.

  Yes

  No

  N/A

• Check the pressure relief valve by depressing the starter armature and allowing unit to run to the relief pressure value of 2200 psig. Adjust as necessary.

  Yes

  No

  N/A

• Clean and Test Motor.

  Yes

  No

  N/A

• Test motor starter overloads by pressing the test button. Replace if necessary or press reset.<br>Auto/Manual switch should be in the manual position.

  Yes

  No

  N/A

• Clean and lubricate motors

  Yes

  No

  N/A

• Measure motor current and compare to nameplate value

  Yes

  No

  N/A

• Check motor controller connections

  Yes

  No

  N/A

• Thoroughly clean the HPU; remove dust and spilled oil. Remove any rust build up on components; touch up paint where necessary

  Yes

  No

  N/A

• Cycle the barrier from the slave control panel. Confirm smooth operation during the raise and lower cycles.

  Yes

  No

  N/A

Maintenance Hours

• Time spent on work order?