Preventive Maintenance Checklist: HYDRAULIC ACTUATOR, GATE (DELTA) - Quaterly

• Site conducted

• Conducted on

  Date

• Prepared by

• Location

• Workl Order Number

• Yes

  No

  N/A

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

• Mechanic's tool set

  Yes

  No

  N/A

• Hydraulic oil (1 gallon)

  Yes

  No

  N/A

• Hand oiler and oil

  Yes

  No

  N/A

• Pressurized nitrogen bottle

  Yes

  No

  N/A

• Spin-on filter cartridge

  Yes

  No

  N/A

• Tools for cleaning debris

  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 filter

  Yes

  No

  N/A

• Remove oil filter

  Yes

  No

  N/A

• Renew oil filter

  Yes

  No

  N/A

• Check hydraulic fluid level. 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

• Drain condensate

  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.

  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

• Confirm that the barrier operates smoothly. Adjust speeds as desired.

  Yes

  No

  N/A

• Clean dust and debris from around the HPU tank and hydraulic lines. Wipe up any spilled oil.

  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?