Precision Diagnostic Instruments, PDI Refrigerant Leak Detector LD-170

Description

Precision Diagnostic Instruments, PDI Refrigerant Leak Detector LD-170
Introduction
The LD-170 Refrigerant Leak Detector detects all CFC refrigerants such as R-22, R-124, R-11 and R-12, as well as the more current and difficult-to-detect HFC refrigerants such as R-134a, R-404A, and new R-22 replacements like R-410A and R-407C. The LD-
170’s
long, slim gooseneck probe design is easy to use in close areas and for extending into hard-to-reach spaces. The adjustable alarm, easy one-hand operation and impact resistance storage case add up to value and convenience
Applications and Features
Easily operate the Refrigerant Leak Detector with one hand to detect the presence of refrigerants. Audible and visual indicators help pinpoint leak sources. Adjustable sensitivity (alarm rate) helps eliminate background gas concentration in contaminated environments.
• H
ighly sensitive, can detect down to 100 ppm of R- 134a or R- 22.
•
Adjustable sensitivity (alarm rate) to locate leaks quickly and easily.
•
Visual leak detection by LED indicator.
• Precision sensor detects even the smallest leaks
.
• Includes earphone j
ack.
• 16”
flex-neck probe.
Controls and Indicators
Sensor Tip Guard & Sensor (internal)
Gooseneck Probe
Alarm Light
Ready Light (Power-On)
Power ON/OFF Slide Switch
Earphone Jack
Sensitivity Adjustment Wheel
Gooseneck Clip
Hand Handle
10. Battery Compartment & Cover
Instructions
Switch on the Refrigerant Leak detector by sliding the ON/OFF slide switch to the right. The READY
light should glow green. The Refrigerant Leak Detector runs through a one-minute warm-up and self-zeroing sequence when it is first turned on in fresh air. The alarm may initially sound without contact with any gas. This is caused by the high sensitivity presets of the Sensitivity Adjustment Wheel. Adjust sensitivity to lowest setting. If the alarm does not stop within 30 seconds, your unit may need service.
Sensitivity Adjustment
Each time the instrument is put into service, you should conduct a quick functional test. Adjust the sensitivity to a non-alarm level. Then expose the sensor to a known refrigerant source, like a refrigerant cylinder. After the initial test and warm-up, the instrument can be used to detect refrigerant. When the sensor in the probe tip detects refrigerant, the alarm rate will increase and the instrument sounds a warbling tone while the ALARM light glows. As the concentration of gas increases so does the alarm rate.
If the situation calls for quiet operation, or if background noise makes it difficult to hear the built-in speaker, you can use an earphone. The earphone jack is on the side of the instrument.
Note: Listening to the alarm through earphones is very loud
.
If the
READY
light does not glow green, the batteries might be low. They should be replaced immediately. Low batteries will adversely affect the
instrument’s reliability.
For more information, see the Battery Replacement procedures.
Adjusting the Alarm Rate (Sensitivity)
The alarm rate tells you when the sensor (in the tip of the instrument) is getting close to a refrigerant source. You can control the alarm rate using the sensitivity adjustment wheel in the center of the instrument.

Turn the wheel clockwise to increase the sensitivity.

Turn the wheel counter-clockwise to decrease the sensitivity.
The rate of alarm increases as the sensor comes closer to a refrigerant source. To isolate the source of a leak, you may need to move the sensitivity adjustment wheel counter clockwise, decreasing the sensitivity, as the sensor moves closer to the leak source.
Battery Replacement
Replace your 1.5 volt /size
“C”
alkaline batteries when:
• The green
READY
does not illuminate.
• No light or other activity occurs
when powering on the instrument.
Specifications
Sensitivity Sensor Type Warm Up Time Response Time Alarm
Power Supply Battery Life Duty Cycle Probe Length Dimensions Weight Warranty
100 ppm of R-134a/R- 22 Low power semiconductor Less than 1 minute
Less than 2 seconds Visible & Audible for all
chlorofluorocarbons (CFC). 3
x “C”
Alkaline Batteries
8 Hours, Continuous Use Continuous
16" gooseneck
221mm x 72mm x 46mm 498g
2 years
Partial list of refrigerants
R-12 ALTERNATIVES
R-22 ALTERNATIVES
R-134a, R-401a(MP-39), R-401B(MP-66), R-401C(MP-52), R-406A(GHG)
R-407C,R-401A,R-410B,R- 507
R-414A(GHG-X4), R-414B(hot Shot). R-416A(Frig C, FR-12)
R-113, R-13B& R-503 ALTERNATIVES
R-409A(FX-56), Freeze 12, Free Zone,
GHG-X5, GHG-HP, IKON 12
R-403B, R-508A, R-508B
R-502,R-500 ALTERNATIVES
HC REFRIGERANTS (not SNAP* approved)
R-402A, R-402B, R-404A, R-407A, R-408A, R-411A, R-411B, R-507
R-290,R-600A, R-170/R-290, R-600A/R-290
*SNAP is the EPA’s Significant New Alternatives
Program for ozone depleting refrigerants for mobile and stationary A/C systems.