HEIL DuraPack 5000 2017, Operation Manual

Page: 184 / 204

Issued September 2017
Compressed Natural Gas (CNG) Option Copyright 2017, Heil Environmental
Printed in U.S.A.
176
DuraPack
®
5000
INSPECTION/PREVENTIVE CARE SCHEDULE
Table 1. Inspection/Preventive Care Schedule
ITEM FREQUENCY
Storage System:
Leak Test with
Methane Detector* Every month
Component
Inspection* Every month
Drain Filter Every 10,000 miles
Replace Filter
Element Every 40,000 miles
Drain Vent Lines Every month (or immediately if
blue vent cap is missing)
Cylinders* Inspect compressed gas cylinders
as outlined by cylinder
manufacturer
* To be completed by a qualified and trained person.
PREPARATION BEFORE MAINTENANCE
It is necessary to prepare the truck to be serviced. A
mechanic’s initial focus while preparing the vehicle for
service should be safety. The primary preparation involves
relieving the pressure within the system BEFORE
performing any maintenance procedures.
Follow the steps as outlined to ensure that no pressure
remains.
1. Leave the Fuel Management Module Manual Shut-
Off Valve in the ‘ON’ position.
2. Turn OFF each supply tank’s valve(s) inside CNrG
Tailgate.
Figure 87. Tank Valve
3. Start the vehicle's engine, allowing it to run until the
engine shuts off. This will ensure that all CNG in the
lines has been consumed.
4. As an added safety precaution, open the system
purge valve to ensure no latent pressure remains.
5. Ensure the high pressure gauge on the fuel control
module reads 0 psi.
6. Turn off the power supply if an electrical component
of the system requires service.
7. Perform any maintenance ONLY after completing
these instructions.
See the Compressed Natural Gas (CNG) section of your
Service Manual for additional maintenance information.