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Purpose
Introduction
MDE-5394B VaporTEK™/VaporTEK-3 Controller Board 110 V UL® Vapor Recovery Collection System for Encore® 500 S
Start-Up and Service Manual · March 2019
1 – Introduction
Purpose
This manual provides start-up and service information for the VaporTEK
™
Vapor Recovery
System. VaporTEK is a dispenser based, Stage II Vapor Recovery System that collects vapor
during vehicle fueling and returns vapor to the Underground Storage Tank (UST). Each
VaporTEK system is designed to accommodate two active fueling points simultaneously.
The key performance parameter mandated by regulations is the Air Over Liquid (A/L) Ratio,
with “A” being air (actually a vapor-air mixture) and “L” being liquid (or fuel).
The intent of the system is to collect the same amount of vapor as the fuel being dispensed.
However, because the process for capturing vapor is subject to variation from many sources,
the regulatory bodies typically allow for some deviation from a one-to-one relationship
between delivered fuel and recovered vapor. The regulations for system performance take
these variations into account by allowing the A/L Ratio to vary by +/- 5%. That is, values of
the A/L Ratio between 95% and 105% are acceptable at a performance of 38 Liters Per Minute
(LPM), with the target being 100% (A = L).
For markets where monitoring of system performance is not mandated, the monitoring and
control components are not required. This manual describes all the functions related to
collection of Vapor Recovery System.
