WPG MRTALPCH611LDC Test Procedure Download Page 1

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TST-019 MRTALPCH CHANNEL

– Rev. 2016-310

LEAK TEST

PROCEDURE

MRTALPCH611LDC

– REMOTE READY LIFTERS W/ 3 BUTTON CONTROL

APPLICABLE TO LIFTERS WITH

SERIAL NUMBERS GREATER THAN # 20100742

TESTING AND MAINTENANCE MUST BE

DONE BY A QUALIFIED PERSON

KEEP FOR FUTURE REFERENCE

Summary of Contents for MRTALPCH611LDC

Page 1: ...16 310 LEAK TEST PROCEDURE MRTALPCH611LDC REMOTE READY LIFTERS W 3 BUTTON CONTROL APPLICABLE TO LIFTERS WITH SERIAL NUMBERS GREATER THAN 20100742 TESTING AND MAINTENANCE MUST BE DONE BY A QUALIFIED PE...

Page 2: ...TST 019 MRTALPCH CHANNEL Rev 2016 310...

Page 3: ...ch in the off position However due to the unique design of this vacuum system the situation may arise where with the power turned on the vacuum pump may cycle repeatedly but the vacuum level as shown...

Page 4: ...pproximately 1 8 1 4 3 6 mm off the end of the hose before reinstalling it on the fitting in order to remove damaged hose ends For push in fittings the hose end must be cut square and straight to seal...

Page 5: ...ad system any leakage will appear to be faster than seen in the overall test due to the reduced system volume 1 Remove the 4 screws 1A that attach the valve cover 1B to the channel Note there are no c...

Page 6: ...this circuit red or blue green does not leak between the check valve and the filter If during the overall test of the lifter a leak was indicated in both circuits red and blue green remove the ball va...

Page 7: ...e turned perpendicular to the valve switch the power on and activate the vacuum generating system by pressing the apply push button 3 Switch the power to off and observe the vacuum gauge of the ball v...

Page 8: ...ose the ball valve turn handle perpendicular to the valve switch the power to off and observe the vacuum gauge of the ball valve to determine the area of the leak If the vacuum level on the ball valve...

Page 9: ...vacuum gauge the indication is that a leak exists between the vacuum pump and the check valve s If either the solenoid valve that seals off the vacuum pump to the vacuum system the vacuum switch or t...

Page 10: ...s shown on the ball valve s vacuum gauge starts and continues to drop the indication is that the hose connection to the vacuum tanks is the cause of the leak Proceed to step 30 15 Remove the ball valv...

Page 11: ...nect the 5 32 O D hose 10B from the control box 10C that connects to the solenoid assembly Note this hose may be blue or black 23 Attach the end of the ball valve with the vacuum gauge to the hose rem...

Page 12: ...2 27 With the ball valve in the open position handle in line with the valve switch the power on and activate the vacuum generating system by pressing the apply push button 28 Close the ball valve turn...

Page 13: ...nd fittings 31 The components involved will be the hose running from the 45 fitting of the pump solenoid 14A to the Y fitting 14B and the green and red hoses 14C running from the Y fitting to their re...

Page 14: ...amage the single barb of the fitting 36 Using an additional piece of hose connect the end of the ball valve with the vacuum gauge to the Y fitting Connect the other end of the ball valve to the hose c...

Page 15: ...ge of the ball valve If the vacuum level as shown on the ball valve s vacuum gauge starts and continues to drop the indication is that the Y fitting leaks Replace the Y fitting Reconnect the hoses and...

Page 16: ...ere are no indications of damage to the threads of the check valve replace the push in fitting of the vacuum tank 20A that connects to the 3 8 O D hose the red tank connection is shown in FIGURE 20 If...

Page 17: ...shown in bottom views Note If only one set of pads green or red circuit is capped off the lifter will need to be attached to a clean smooth surface for the remaining section to seal during testing 4 W...

Page 18: ...s not leak the indication is that the leak is located in the section that was removed This would be the pad fitting hose the quick connect plug assembly or that the quick connect leaks when connected...

Page 19: ...the male quick connect or the pad fitting It will exist between the quick connect and the filter connection of the circuit being tested 11 Test the quick connect by itself when disconnected Remove the...

Page 20: ...connection The next step would be to move to the next fitting in the pad line remove the hose leading from it to the quick connect cap off the fitting and repeat the test If the leak continues continu...

Page 21: ...ball valve is to install it in a line so the lifter s vacuum gauge provides a reading for one section of the circuit being tested and the ball valve s vacuum gauge provides a reading for the remainder...

Page 22: ...ed fitting and hose do not leak In the same respect if the ball valve s vacuum gauge held this would verify that the section between it and the filter connection do not leak 15 Continue testing using...

Page 23: ...ed during testing always apply thread sealant Teflon tape or similar product to the male threads prior to reassembly in order to avoid vacuum leaks For plastic fittings use only Teflon tape liquid sea...

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