abdulkader rokaya

KAUST Maintenance under MACC Jan 2017 — Present
HVAC Supervisor.
In January 2017 I was hired by KAUST throw ERAM (Manpower company) as SMP to work with MACC in KAUST Maintenance I am holding approximately the same position as before in Saudi Oger ltd with more responsibilities in HVAC service. I am working as MCC, cold rooms, KLE and fume hood supervisor, in addition I am also the PLC and control specialist for HVAC, Hydraulics and electrical services.
In addition to the responsibility I was holding in Saudi Oger LTD (since July 2015) I am responsible now of:
- Leading the preventive maintenance of walk in cold room’s team for scheduled activities as monthly, quarterly and annually. To keep it ready for researchers daily activity.
- Leading the reactive maintenance team to solve all incidents and problems in the walk in cold rooms.
- Leading KLE reactive maintenance team for all equipment’s inside campus buildings (drinking fountain chillers, kitchen hood, scrubber, somat waste treatment system, refrigerators, freezers, coffee machines, hot water boilers, ice making machines, dish washers and micro waves.)
- Leading Fume Hood preventive and reactive maintenance team to insure that all fume hoods inside KAUST labs are fully functioning and ready for researcher’s experiments.
- All other responsibility in MCC, PLC and control maintenance are mentioned below. (Saudi Oger section).

I am holding a position as Motor Control Center (MCC) maintenance supervisor engineer in HVAC systems installed in King Abdullah University of Science and Technology (KAUST), also as PLC and Control Engineer for kitchen equipment’s, cold rooms and some control systems for Hydraulics services, inside KAUST. More details about my position is listed below:
MCC responsibility:
- Leading the preventive maintenance team scheduled as monthly, quarterly and annually. Our team is responsible to keep all AHU, FCU and ACU main and backup one’s fully running or ready to run in case of emergency.
- Leading the reactive maintenance team to finish all tasks tickets we have as soon as possible.
- Program troubleshoot and repair VFD’s (General Electric AF-300, AF-600, Grundfoss, Siemens Micromaster, FUJI Eco and MEGA series, Altivar, Danfoss, Vacon, ABB, Emerson and YASKAWA).
- Program troubleshoot and repair MCC panels Circuit Breakers.
- Maintain All electrical components of the MCC panel ( Circuit breakers, contactors, filters, relays, timers, phase monitor, over load protection)
- Check and Troubleshoot AHUs, FCUs and ACUs motors and chilled water pumps using meager test to confirm that they are in a good conditions otherwise to change them or rewind them.
- Finding the best substitution for the absolute materials of MCC panels and HVAC electrical materials to ensure the same materials performance, quality, wiring installation and dimension.
PLC and Control responsibility:
- Check and modify DDU PLC control system to the desired sequence of operation.
- To calibrate and rectify Dwyer flow and pressure controllers and sensors for AHUs.
- To calibrate and rectify Air Monitor flow and pressure controllers and sensors for AHUs.
- To calibrate and rectify Viasala temperature, humidity and CO2 controllers and sensors for AHUs.
- To calibrate and rectify Siemens temperature, humidity and CO2 controllers and sensors for AHUs.
- To calibrate and rectify CHEMTROL system (PC 3000) which is responsible to add chemical solutions for the fountains water tank to keep water clean.
- To calibrate and rectify REDOX TRANSMITTER system of ozone generator for the open area fountains which is responsible to control the ozone generator by releasing O3 to keep water clean and reduce the usage of chlorine.
- To calibrate and rectify water flow meters for domestic, RO and Hot water. They are using two types of meters one with turbine sensor and other using ultrasonic sensors. My job is to use a portable ultrasonic meter to check if the installed meters are giving correct readings compared to its display and on BMS and to reconfigure or change the sensor if needed. Flow meters I already worked with are Onicon flow meter systems: system-10 and D-1200 both uses F types of single and double turbine sensors, George fisher flow meter on RO system, Siemens sitrans F flow meters we are using different types based on the usage purpose and pipes sizes, geryline pt500 and valcom UPF02.
- Check, rectify and modify RO PLC control system to the desired sequence of operation.
- Check, rectify and modify Air Compressor and Air Dryer PLC control system to the desired sequence of operation.
- Check, rectify and modify Vacuum system PLC control system to the desired sequence of operation.
- Check, rectify modify and calibrate cold and environmental rooms control system to get the best result with power saving.
- Check, rectify and modify cold room PLC and HMI control system to the desired sequence of operation.
- Troubleshoot and rectify Kitchen Hood control system to keep its good performance.
- Troubleshoot and rectify Weather station to keep the reading in BMS correct.
- Support BMS team in case of emergency or upon their request in alerton BMS control ( envision, and Microsoft Visio software’s, Bacnet, MSTP, Modbus and SNMP communication protocols)

I am holding a position as engineer, designer, developer and technical support for the company in electronics products, Industrial automation products and other electrical products:


- Professional in programming PLC (programmable logic controller) ladder diagram, instruction list or function diagram languages. Types of PLC I program so far: siemens (s7-1200, s7-200 and s7-300), allen-Bradley, LSIS (XGB, XBM, XGK, K120), Omron, Fatek, Delta.

- Professional in programming inverter (VFD: variable frequency drive) and installing it.

- Professional in programming HMI for monitoring and controlling systems. Types of HM I program so far siemens, view tech, wintek and xp-pannels.

- Professional in programming Scada systems for monitoring and controlling systems.

- Professional in installing, troubleshooting and maintenance Automation Systems

- Microcontroller PIC programmer in two languages C and assembly with developing electronic circuits.


- Installing solar systems and wind turbine systems Integrated with ups system for houses and factories using on-grid or off-grid inverters systems to get free electrical for a long time with a low cost.

- Creating monitoring systems for special stations like cell phone stations to monitor all electric usage and values (Ac voltage, DC voltage, Ac current and DC current), diesel Level and motion statues with alarm system connected to a specific software’s in monitoring room and SMS alarm.

- Visual basic and android programmer to establish remote access to our control, electrical and automation systems.

- Creating reliable systems for factories, machines using a Variety of electronic items and sensors to get the optimum result needed from the project.

- Troubleshooting, Repairing, Wiring and installing electrical boxes for the aimed project.

- Creating a web pages for web servers to enable remote access for the system created.


I made many systems for factories (Food / Beverage, Oriental Pastry, Metal, Wood, Ready mix concrete, natural stone and many other industrial systems).

As well as I am professional in programming filling machines while I made more than 300 system for many types of filling machines used for powdered, solid, liquid, gas, or viscous products. Also Bottle caps equipment, Over-Capping, Lidding, Closing, Seaming and Sealing Machines.

As well as I worked in programming and maintenance CNC machines Laser, rotary, wire cut, plasma and beam saw machines.

For more details about my experience and systems I did so far I am ready to response.

Also, I am Professional with these systems:
- IP Cameras, NVRs and IT networking,
- Analogue CCTV Cameras and DVRs
- Access Control and Time Attendance using finger print or RFID.
- Intrusion Alarm, Gate barriers and Swing Gates.
- Intercom

During my university period i was holding a position as an it assistant for the engineer Gaby abo haidar and a leader for other student team. I was responsible of all computer labs and server room hardware and software. and the internet communication in the company and between the branches.

- Install, configure, manage, maintain, test, evaluate, and repair computer networks, workstations, support server system(s), supporting hardware/software, user accounts, and computer/telephone room.
- Troubleshoot/repair/resolve technical problems/issues related to computer hardware/software/LAN and WAN/internet.
- Provide network communications support and technical guidance. Analyse, recommend, and implement process improvements.
- Deploy new hardware (workstations, servers, printers, etc.)

• Training Digital Microwave in OGERO: Topics Covered: Concept of binary signal - digital signal - timing control - line coding - clock extraction - transmission codes - synchronization - multiplexing synchronous signals and multiplexing plesiochronous signals - the difference between synchronous transmission and asynchronous transmission - structure of (2-8-34-140) Mbits frame as per the following details: ➢ PDH transport network concept
➢ STM 1-4-16-46 frames in the PDH
➢ DWDM general ideas
➢ Base Band transmission (cable equalizer, code converter, scramblers and differential coding)
➢ Modulation techniques (PSK, QAM, TCM)
➢ Transceivers (IF pre-distortion, local Oscillator)
➢ VP convertor, down convertor and amplifier
➢ switching criteria, branching and circulator


As well as a practical exercises in the PDH and SDH systems with a project done at the end of training period which connect the villages to the main switch with a microwave with backup Fiber Optic system. transmission medium main links plus protected links.

This period is covered at Bir Hassan lab, Adleye station (international services), Goret El Balout station (responsible for transmit the Lebanese TV's data to the satellite)

Also we get a general information about DSL, ADSL and Leased lines. where they used haw they established and programmed or troubleshoot it from al-naher station.