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Thank you for purchasing a JBM Product. Manufactured to a high standard this product will, if used according to these instructions
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIRE-
MENTS, WARNINGS AND CAUTIONS. USE THIS PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE
FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE OR PERSONAL INJURY AND WILL INVA-
LIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
1.SAFETY INSTRUCTIONS
WARNING! Ensure that Health and Safety, local authority and general workshop practice regulations are adhered
to when using tools.
WARNING! Any work carried out on the A/C system should only be performed by an Air Conditioning service
technician following the vehicle manufacturer's service instructions or a proprietary manual to establish the
current procedure and data.
DO NOT use manifold if damaged.
Dispose of refrigerants according to local authority guidelines.
DO NOT Allow refrigerant to vent to atmosphere.
Maintain the manifold in a good condition for prolonged life and safe use.
Wear suitable eye protection. A full range of personal safety equipment is available from your JBM dealer.
Wear suitable protective clothing and gloves when handling refrigerant.
Wear suitable clothing to avoid snagging. Do not wear jewellery and tie back long hair.
Account for all tools and parts being used and do not leave them on or near the engine
On completion of work, put the equipment back and store in a cool, dry, childproof location.
IMPORTANT: These instructions are provided as a guide only. Always refer to the vehicle manufacturer's service instruc-
tions, or a proprietary manual, to establish the current procedure and data.
WARNING: The warnings, cautions and instructions discussed in this instruction manual cannot cover all possi-
ble conditions and situations that may occur. It must be understood that common sense and caution are factors
which cannot be built into this product, but must be applied by the operator.
2. INSTRUCTIONS AND SPECIFICATIONS
Test for variations in high and low pressure sides of vehicle air conditioning systems. Suitable for R134a and R12 applications. Li-
ght-weight, aluminium block design with sight glass and easy-to-read large anti-flutter gauges. Professional service couplers (colour
coded and labelled). Three colour-coded charging hoses and a hanging hook to allow hands-free use
Applications: R134a, R12
Hose Length: 1550mm
3. OPERATION
WARNING: Disconnect hoses with extreme caution! Pressurized refrigerant may be present in hoses. Never direct
hoses toward your self or any other persons.
3.1 Connecting Quick Couplers
Quick couplers are provided to access the vehicle's service ports. The quick coupler should be in the closed position before connec-
ting to the male fitting on the vehicle.
3.1.1 To close, turn the handle fully anti-clockwise. Connect the blue and red hoses to the corresponding couplers and then to the
corresponding side of the manifold.
3.1.2 Place the quick couplers on the male fittings on the vehicle.
3.1.3 Push in on the handle of the quick coupler with your thumb, while pulling up on the sleeve until it bottoms on the male fitting and
then release. Check to see if it is correctly seated by pulling up on the quick coupler.
3.1.4 Make sure the hand-wheels on the manifold are closed (fully clock- wise) and turn the quick coupling knob fully anti-clockwise,
to open the valve.
3.2 Diagnosing System Operation
3.2.1 Ensure both hand-wheels are closed (turn fully clockwise) and connect the blue low side hose to the A/C system's low pressure
side service port. Connect the red high side hose to the A/C system's high pressure side service port. (Already done in section 3.1).
3.2.2 With the manifold hand-wheels closed (fully clockwise), read the pressures on each gauge.
3.2.3 Compare these pressures and temperatures to the A/C system manufacturer's specifications for proper operation.
3.2.4 If the system is within the correct operating guidelines, disconnect the manifold hoses from the system (close both hand wheels
