Deghat Harekat Sannat Sabaz Parsian is building a team of Service Technicians with tools, parts supply and CNG service vans to perform all of the periodic inspection, certification, preventive and repair maintenance to keep components in the best possible operating condition. We provide systematic inspection, detection, and correction of incipient failures either before they occur or before they develop into major defects and we keep the equipment calibrated to consistently deliver the lowest-cost fuel possible.

To optimize results and minimize costs, DHSSP typically has the fleet operator / site owner perform day-to-day checks of oil level, storage pressure and other minor tasks. However, we will also provide complete operations services where the customer wants nothing to do with the station equipment.

Depending on station size, utilization and component make-up, DHSSP provides weekly and bi-monthly site visits that typically last ~ 8-16 hours per visit. We also provide compressor and valve overhaul and rebuild services, drier desiccant replacement and disposal throughout the life of each component.

DHSSP provides the skilled labor, Technicians, hired trade specialists, tools and consumables to complete the contracted preventive maintenance and repair services. DHSSP’s preventive maintenance is designed for the specific equipment at each CNG station site. The following is a summary of some of the maintenance tasks DHSSP is providing as part of an all-inclusive maintenance at a customer-owned CNG station:

Relieve crankcase pressure, check compressor oil level, add oil if necessary, remove used oil
Record all gauge pressures
Check system for leaks
Drain liquids from inlet filter
Drain liquids from recovery tank
Check system for unusual noise or vibration
Check drive belt alignment, tension & belt tensioner
Torque all fasteners on compressor including flywheel
Drain water from drop legs of relief valve manifolds
Gas detector calibration
Inspect & clean cooler fins, if applicable
Change compressor oil and filter at recommended hour intervals
Inspect and service all gas filter elements and o-rings
Inspect safety relief valves (per NFPA 52, recertification needed in 2017)
Inspect discharge check valve
Check controls for proper operation and safety
Check dispensers for proper operation and hose condition, replace filters as required
Lubricate nozzles
Verify that dispenser and POS are operating properly
Check dryer for proper operation and condition, regenerate or replace as required, replace filters as required
Perform scheduled maintenance, valve rebuilds, ring inspection/replacement, bearing inspection / replacement
Provide service reports for site summarizing work completed, equipment operational status, upgrade recommendations and repairs needed
Clean equipment
Proper disposal of all drain oil/consumables
Whatever the best-practice requirement to maintain and repair CNG fueling station equipment, DHSSP is equipped and staffed to provide the highest-quality service.

Write to us and let us know how we can help your investigation and serve your needs.