Why risk fines up to $27,500.00 per violation per day for not having the
proper certifications?
Recent EPA Enforcement Actions
Have questions about the EPA'S Rules and Regulation?
Use the Link Below.
Link to EPA Rules & Regulations
Let us Train and Certify your staff.
These tidbits and the many others that we have provided our customers over the past eighteen years are a small token of our appreciation to the most important people in the world. Our Customers!
Our office is open from 8am to 4pm Mountain Standard Time Monday thru Thursday
Contact Us
Phone: 623-934-0909
E-mail to: Contact Us
Motorcoach 608 Certification is EPA Approved and valid for all classes of HVAC and refrigeration work.
RESIDENTIAL
COMMERCIAL
INDUSTRIAL PROCESS
CHILLERS
SMALL APPLIANCES
R-22 & R-500 BUSES
609 Certification is valid for Motor Vehicle Air Conditioners including R-12 & R-134a Buses.
Recent EPA Enforcement Actions
Have questions about the EPA'S Rules and Regulation?
Use the Link Below.
Link to EPA Rules & Regulations
Let us Train and Certify your staff.
These tidbits and the many others that we have provided our customers over the past eighteen years are a small token of our appreciation to the most important people in the world. Our Customers!
Our office is open from 8am to 4pm Mountain Standard Time Monday thru Thursday
Contact Us
Phone: 623-934-0909
E-mail to: Contact Us
Motorcoach 608 Certification is EPA Approved and valid for all classes of HVAC and refrigeration work.
RESIDENTIAL
COMMERCIAL
INDUSTRIAL PROCESS
CHILLERS
SMALL APPLIANCES
R-22 & R-500 BUSES
609 Certification is valid for Motor Vehicle Air Conditioners including R-12 & R-134a Buses.
Bus Maintenance News
Maintenance Topics
Back to Bus
Maintenance Topics
Preparing for
Certification Tests
608 Core Exam Study
Topics
608 Type I Exam
Study Topics
608 Type III
Exam Study Topics
TYPE II HIGH PRESSURE SYSTEMS EXAM
The test topics you should expect on the Type II Exam are:
Leak Detection
- Signs of leakage in high-pressure systems (excessive superheat, traces of oil for hermetics)
- Need to leak test before charging or recharging equipment
- Order of preference for leak test gases (nitrogen alone best, but nitrogen with trace quantity of 22 better than pure refrigerant)
Leak repair requirements
- Allowable annual leak rate for commercial and industrial process refrigeration
- Allowable annual leak rate for other appliances containing more than 50 lbs of refrigerant
Recovery Techniques
- Recovering liquid at beginning of recovery process speeds up process
- Other methods for speeding recovery (chilling recovery vessel, heating appliance or vessel from which refrigerant is being recovered)
- Methods for reducing cross-contamination and emissions when recovery or recycling machine is used with a new refrigerant
- Need to wait a few minutes after reaching required recovery vacuum to see if system pressure rises (indicating that there is still liquid refrigerant in the system or in the oil)
Recovery Requirements
- Evacuation requirements for high-pressure appliances in each of the following situations:
-
- Disposal
- Major vs. non-major repairs
- Leaky vs. non-leaky appliances
- Appliance (or component) containing less vs. more than 200 lbs
- Recovery/recycling equipment built before vs. after November 15, 1993
- Definition of "major" repairs
- Prohibition on using system-dependent recovery equipment on systems containing more than 15 pounds of refrigerant
Refrigeration
- How to identify refrigerant in appliances
- Pressure-temperature relationships of common high-pressure refrigerants (may use standard temperature-pressure chart--be aware of need to add 14.7 to translate psig to psia)
- Components of high-pressure appliances (receiver, evaporator, accumulator, etc.) and state of refrigerant (vapor vs. liquid) in them
Safety
- Shouldn't energize hermetic compressors under vacuum.
- Equipment room requirements under ASHRAE Standard 15 (oxygen deprivation sensor with all refrigerants)