Am / Amd Series

Transcript

Next Table of Contents - 145 Mld County Drive Orchard Park, New Yo* 14127 716-662-6650 Toll-free1-800-Midmark 800-847-7000 Tschrii~al Support. 886279-1260 www.midmark.com F a 716-662-8440 E-mail: [email protected] 10337000 1033 7000Rev Rev.D C Style F Back Next S d o n IAWAMD Series AiMax Compn?som Section 2 Description ....1 .......................................... 2 2.1 Unit Selectiqn.................................................. 2 ..........................................3 3.1 General P r o c e d u ~........................................ 3 3.2 Site Selection Cnteria ..................................... 3 3.3 Installation Procedures ................................ 3 Section 3 Installation Section 4 H o w AMIAMD Series AirMax Compressors Work 8 Desiccant Dryer Units..................................... 8 ................................................ The Purge Cycle ............................................. 8 Compressor Duly Cycle ......................... 9 .... Section 5 Maintenance and Tmubleshooting .... 10 5. I Periodic Maintenance .................................... 10 5.1.1 Cornpmssor Oil Servicing ........................... 10 5.1.2 Pressure Relief Valve ................................. 10 5.1.3 Tank Drain ............................................ I1 5.1.4 Air Intake Muffler Replacement .................. I1 5.1.5 System Leak Testing ................................. 11 5.1.6 Change Coalescirrg Filter Element (AM Models) ............................ . . ........... 72 5.1.7 Desiccant Tank Replacement (AMD Models only) .................................... 12 5.2 T~ubleshooting.................................... ... . 13 5.3 Unit Schematics 16 ............................................. Section 6 Replacement Parts ..........................18 Section 7 Return Information a n d Warran ty... 20 7. I Returned Goods Procedure ...........................20 7.2 Warranty ............................................... WARNING: Always disconnect electrical power to the compressor before servicing. WARNING :To prevent injury from high pressure air, never remove the coalescing filter bowl or any other pressurized component until the purge cycle has ended and the system has been relieved of alr pressure by opening the service drain valve. WARNING: Compressor heatts are extremely hot during operatlon. To avoid burning yourself, allow the unit to cool before servicing. 20 IMPORTANT: Excessive cIrcuit lengths should be avoided to reduce voltane drOD d u r i n ~compressor operation. Voltage measurements should bk taken while the cornpressot is running. A static voltage reading Is not a true indication of voltage supply during operation. IMPORTANT: To avoid compressor overheating and thermal shutdowns, the installation site must be properly ventilated and, if necessary, air conditioned to prevent ambient temperatures from exceeding 10CFldOoC. WARNING: Compressor motors are thermally protected with an automatic reset and may restart without warning. IMPORTANR Compressors installed outdoors must be protected from rain, snow, direct sunlight, and excess dust. Temperature limits and ventilation recommendations must also be followed. WARNING: The compressor motors are controlled by a pressure switch and will have line voltage applied to them whenever the tank pressure is below 80 PSI. The compressor may starl without warning. IMPORTANT: Always keep all service switches in the ON wosition. Never run the comwressor with one of time head tuined OFF except for short while one head is not operational. IMPORTANT: Installations must be made to all local codes. IMPORTANT: Adequate line voltage Is essential to proper compressor operatlon. Voltages outside the specifled rarrge requlre a buck or boost transformer. Othemise, failure to start. circuit breaker tripping, overheating and compressor damage may occur. IMPORTANT: Never turn a compressor head ON while the other head Is running as the heads may not start under back pressure. Allow the pressure switch to turn OFF the compressor at 100 PSI or disconnect the compressor main power supply to completely relieve line pressure through the solenold valve. Back Table of Contents Next Section f Matrx AMIAMD Series AirMax Compressors Matnt AMIAMD-Series AirMax Compressors combine high-performance design wiVl rugged, trouble-free c~lstructionto provide high quatty campressed dental air. Two styles are available -the AMD-Series featuting a builtin desiccant air drying system and the A M e & which is normalty caupled with a Mabx Refrigerant Air Drying System and Air Filter Bypass Manifold to provide air to the operatories. To meet the needs of large and small dental practices both compressor styles, AM and AMD, are available in single, dual and triple head configurations. Single head units deliver 4.2 cubic feet per minute (cfm) of compressed air; dual head units provide 8.4 cfm and the triple head units supply 12.6 cfm. Section 2 provides complete physical and electrical specifications for each model within both series. AMD-Series AirMax compressors with an integral desiccant drying system and in-line filter deliver clean, L Figure f - f . AMIAMD-Series AirMax Compressor Features dry air free from water, oil and other contaminants that might compromise cosmetic dental procedures or handpiece operation. The particulate filter removes particles as small as 0.01 micron in diameter. This level of filtration exceeds the NFPA requirement of 5 microns by a factor of 500 times. All AirMax Compressors use industry standard pistontype heads because of their proven reliability and lownoise operation. Dual pistons are intergrated into an iron crankcase that provides durability and ensures quite operation. Air generated by the compressor heads passes into an ASME-certified tank which supplies air to the opemtories. A safety valve releases air from the tank if an overpressure condition should occur. All units are equipped with a standard low voltage control relay which enables operation from a location remote from the actual site where the air compressor is installed. Figure 1 -1 illustrates features of AMIAMDSeries AirMax Compressors Back Next Table of Contents Sectlon 2 - Description 2.1 Unit Selectlor, Units are sized (selected) for a specific Practice or application dependent upon air demand. Typical handpieces and other air-operated equipment consume approximately 2 cfm each. Matrx recommends oversizing the unit selected by 20% per user. In addition, dental users with high air flow reaulrements for air-driven tools should she the unit with an'extra 50% to 100% of user capacity. Suggested Applications Users - Refer to Table 2-1, Specifications, for the cfm output of each unit. To provide the 7.2 dm required in the example, elther an AMD-100-2 or AM-100-2 compressor, wh~ch supplies 8.4 cfm, would be required. Recommended Units 2 Users AM-100, AM-101 AMD-100 or AMD-I01 4 Users AM-1002 or AMD-100-2 6Users To select the unit more precisely, multiply the number of expected simultaneous usen by 2 cfin per user. For example, to sire a three-user practice: 3 users x 2 cfm per user = 6 cfm 6 cfrn X 1.2 (20% cushion) = 7.2 cfm Some air operated handpieces and equipment may have higher cfm requirements than the 2 cfm average. For the most accurate cfm requirements, check manufacturer specifications for each piece of equipment to be powered by the Matrx compressor. AM-100-3 or AMD-100-3 Table 2-1. AMIAMD Series AirMax Compressor Specifications AMD Series Compressors Tank Capacity 5 gal. 5 gal. AFB-10 - 20 gal 35 gal. AFB-I0 AFB-10 AFB-20 WR-I0 WR-10 WR-10 WR-I5 2 2 4 6 RecommendedAir Filter Bypass Recommended Refrigerant Dryer Normal Capacity (Users) 2 Back Table of Contents Next - Section 3 Installation A typical AMIAMD-Series AirMax Compressor installation site is in a utility room Or remote equipment room that provides adequate power, ventilation and maintenance access. The compressor connects to operatories and patient examination rooms via tubing or piping muted under the floor or overhead in ceiling spaces. To limit ambient temperature rise and high ambient humidity, adequate ventilation is required. If a dental vacuum pump is located in the equipment room chosen for an AMIAMD-Series AirMax Compressor, the fresh air intake kit provided with the unit should also be installed. This is required by National Fire Protection Association (NFPA) Code 99C. WARNING Units should be installed only by electricians and plumbers licensed in the jurisdiction of installation. 3.2 Site Selection Criteria Maintenance of AMIAMD-Series AirMax Compressors requires access for service personnel. When installing a unit, allow 30" clearance for these functions: Oil Level Maintenance. Access to the oil fill hole and sight glass is necessary for routine maintenance. Position the unit so the sight glass is readily visible. The oil fill hole must also be accessible so oil can be easily added as necessary. Desiccant Dryer Tank SeMcing (AMaSerles only). The desiccant dryer tank can be replaced on site. Seled a site with clearance to remove this assembly. Air Intake Muffler. The intake muffler assembly should be easily accessible as its foam cell filters require cleaning and replacing periodically. Storage Tank Drain. The air slorage tank is drained of condensate periodically. Access to a floor drain is helpful. Other lnstallation Considerations Room Temperature. Matm compressors should not be operated without cooling if ambient bmperature exceeds 104°F1400C. Provide additional cooling if necessary. provide fresh air to the compressor without using air from the equipment room. Electrical Powef Availability. Electrical service at the appropriate voltage should be furnished from a 20 amp dedicated branch circuit for single and dual head units (30 amp for triple heads units AM-100-3 and AMD-100-3) installed in accordance with the National Electrical Code. 3.3 lnstallation Procedures TO install AMIAMD-Series AirMax compressors, see diagrams on page 4 for AMD units or page 5 for AM compressors. 1. Position compressor at site selected using Section 3.2 criteria. 2. Use circular level on mounting platform of \ LOCK compressor to level unit. AMIAMD Series air compressors are equipped with leveling feet that can be individually adjusted either by inserting a screw driver in the notch on top of the foot, or by Upping compressor and adjusting the exposed hex head of the foot. Tighten locknut. Place a leveler cap (included with unit) over the bottom of each foot. See Figure 3-1 I I Figure 31. Foot AdJus6nent CAUTION Careful leveling is necessary to prevent damage to the cornnressor cvlinderls\. , , Pmoer oil distribution in the erankeace depends &on the unit being level during operation. The bubble must either be within the center ring or at least not touching the outer circle as shown below. Inlet AWAccess. NFPA Code 99C states that a dental compressor air intake shall not be in the vicinity of exhaust from a dental vacuum pump. A fresh air intake kit is provided with all units. This kit, when properly installed per Section 3.3, will The compressor need not be fastened to the floor unless required by local code. Back Table of Contents installation Checklist; d Unit correctly slzed for application. See Section 2.1 d Piping to operatories installed and leak tested. d Electrical service installed from dedicated clrcuit. Service installed matches unit nameplate requirement. Installation per all local electrical and plumbing codes. d Fresh air intake kit installed. Ensure proper oil levels prior to startup. I Figure 3-2. AMD-Series Compressor Typical lnstallation Next Back Next Table of Contents Installation Checklist: d Unit correctly sired for application. See Section 2.1. d Piping to operatories Installed and leak tested. d Electrical service installed from dedicated circuit. Service installed matches unit nameplate requirement. d Installation per all local electrical and plumbing codes. d Fresh air Intake kit installed. d Ensure proper oil levels prior to stanup. CP SERIES CONTROL PANEL WITH AND ONIOFF CONTROL I Figure 3-3 AM-Series Compressor Typical lnstallatlon Back i I Next Table of Contents 3. Verify that dedicated electrical circuit selected for the I 4. unit will supply the power requirements listed on the compressor nameplate. Connect power from the dedicated branch circuit to the Low Voltage Relay Box as follows: See figure 3-4. a. Remove knockout at bottom of the Low Voltage Relay. b. Connect line voltage to Low Voltage Relay Box using 12 AWG wire in flexible conduit (10 AWG wire for triple head units) or as required by local code. c. Use appropriate strain relief or conduit connector to secure conduit. d. Secure Supply leads to terminals L2 and L1; attach ground wire to ground stud. 5. I I If w i t is to be operated remotely, run 1813 jacketed bell wire from CP Series Control Panel to the prewired leads protruding from the top of the Low Voltage Relay. Match wire color to prewired red, white and blue wires at relay box. The red and white wires are for switching: blue is for lighted switch applications. NOTE Matm offers a complete line of remote control panels. The CP Series Is designed to interface with ANVAMO Series AirMax compressors. These control panels must be wired to the Law Voltage Relay Box that Is provided standard with these compresson. Control panels can also be equipped with gauges to monitor air pressure. Most gauge monitoring lines are fed from the main compressed air h e near the operatory. However, the gauge monitoring tubing can also be connected to fitrings at the manifold block. 6 . Plumb air distribution piping from operatories to 112" FPT fitting of compressor ball valve. Pressure test piping for leaks to local codes. 7. For AMD Series units, place oil absorbant pad or shallow pan on floor beneath solenoid valve. 8. Verify that the installation leaves adequate clearance (usually 3 0 ) for access to perform the service functions listed in Section 3.2 RED, WHITE & BLUE WIRES TO REMOTE CONTROL PANEL Single and Dual Head Units I Figure 3-4. Connect Supply Power and Remote Control Wiring Triple Head Units Ef I Back Table of Contents 9. Install fresh air intake. Refer to Figure 3-5 and: l o . Perform initial checkout testing as follows: a. Connect 1" I.D. flexible hose (1) to hose barb connector (2) on end cap of air intake assembly. a. Open ball valve to operatories. b. Connect 1" slip X hose barb adapter (3) onto 1" flexible PVC hose installed in step a. c. Connect slip end of connector to the I" PVC pipe (supplied by installer) leading to an external fresh air source. NOTE Installation of the fresh air intake is required when vacuum discharge is exhausted to an open drain. Sew "Inlet Air Access", Section 3.2. Next b. Apply power to the unit by positioning the circuit breaker to ON. For dual and triple head units, place all ONlOFE switches to ON. c. For AMD-Series units, check that the solenoid valve at the base of the desiccant tower closes when the Compressor turns on. No air should escape at this point. d. Watch the pressure gauge on the compressor. At 100 psi, the compressor should shut down. e. Close the ball valve to the operaturies. Slowly open the storage tank drain valve to bleed down the tank. Check that the compressor starts up when tank air pressure drops to 80 psi as seen on the gauge. Close the storage tank drain valve. 0 ADAPTER -IP X HOSE BARB PIPE TO OUTSlOE 1" SCHEDULE 40 PVC I \ @ V Q SCREEN I Figure 3-5. Fmsh Air Intake lnstallatlon I * L * ! * . . Back .... Next Table of Contents Section 4 - How AMIAMD Series AirMax CompreSSOrS Work Copeland twocylinder piston compressor heads m u n t on top of an appropriately sized receiver tank A pressure switch monitors air pressure in the receiver, turning off the compressor motor when the upper limit 100 psi, is reached and restarting the motor when pressure falls to the lower limit, 80 psi. ~h~ check valve between the desiccant and purge tanks m t a i n a metering oritice. This orifice allows flow back i n b the desiccant tank. When the Compressor tank reaches 100 psi, the pressure switch Cuts power to the -pressor head and the solenoid returns tQ its normalty open pbsltion. Desiccant Dryer Units The AMD series is equipped with a desiccant dryer. A solenoid valve, located at the base of the desiccant tower, closes at the same time that the compressor head powers up as shown in Figure 4-1. me Purse Cycle m e desiccant and purge tanks, which are pressurized at this point, now begin M release Pressure through the sobnoid valve. Figure 4-2, now passes back through the ~ry, metering orifice in the reverse direction and then through the desisccant bed. As air is drawn back through the desiccant bed, it becomes humidified as the desiccant releases adsorkd water. After leaving the compressor head, air passes through a copper coil which acts as an aftercooler to decrease the compressed air temperature. The air is then directed through an oil/particulate filter that removes these items from the compressed air. After the filter, air Passes into the base of the desiccant tower and diffuses Up into the bed of desiccant beads which extract moisture. Dry air then passes into both the purge tank and the receiver tank. Check valves are located beween both the purge tank and receiver tank. m e humidifled air is then purged through the solenoid valve in combination with oil and particulates m o v e d at me filter. This purge cycle is evident by a slight burst of air, and the slow bleed heard at the end of the mmpresslon cycle. AFTERCOOLE? SOLENOID V A L E 1 WERGYED IN PAW WITH MOTOR TO CLOSE VALVE C Figure 4-1. Normal Operating cycle AMD-~erlesCompressor 8 M v ~ LRS mOPER4TORIES Back Next Table of Contents €zJ PURGE AIR TANK I TANK II COMPRESSEDAIR TO OPEPATORIES I I Figure 4-2. Purge Cycle AMD-Series Compressor Compressor Duty Cycle The AMIAMD-Series AirMex compressors are designed to operate at an approximately 113 duty cycle. Therefore the unit should rest twice as long as it runs. It is important that the compressor be correctly sized for the dental practice. This means that the flow output of the compressor heads must meet or exceed the flow demand from the operatorias. This can be determined based on the number of simultaneous users on the system as discussed in Section 2.1. NOTE Equally important is the presence of systemic leaks. It is imperative that the compressed air piping system be leakproof to prevent the compressor unit from operating at an increased usage factor. The plping system should be tested periodically for leaks to ensure proper sizlng afid air capacity. If the heads are operated at a duty cycle in excess of 113, the temperature of the heads will increase. When the heads are forced to run hotter, more oil is consumed, wear increases and the overall life expectancy of the unit may decrease. The heads are equipped with a thermal overload to protect the head if the ternperature becomes excessive. As important as correctly sizing the unit for the practice in which it is used, is elimination of any system leaks. Leaks have the same effect as undersizing, causing the heads to operate at a duty cycle in excess of the design range. Back Next Table of Contents - I Section 5 Maintenance and Troubleshooting I 5.I Periodic Maintenance If properly and routinaly maintained according to the schedule below, AMIAMD-Series AirMax Compressors provide long, troublefree service. Periodic Maintenance Schedule Service Fumtion How Often How (Pmcedure) Change Oil After first 90 days; then semi-annually thereafter. Check Compressor Oil Level Weekly. Use only Matrx oil (PN 7700 0953) to maintain fill level (Section 5.1.1). Test Pressure Relief Vake Operation. Monthly. Check accordina to Section 5.1.2. See Section 5.1 .I. - Drain Condensate from Storage Tank (AM Series only) Weekly until pattern is developed; thereafter as needed. Clean every three months. CleanlReplace Air Intake MufflerlFilter Replace annually. System Leak Testing Replace Coalescing Filter I I Every three months. Every six months. 5.1.1 Compressor Oil Servicing Checking Oil Level. Check oil level weekly in the sight glass (Figure 5-1) on left side of compressor head crankcase. Oil level in the sight glass should be 112 to 314 for proper operation. It is equally important that oil not be filled past the 314 full point. When oil level falls below the 1M full point, add oil. See Section 5. I.3. Clean or replace per Section 5.1.4. I See Section 5.1.5. I See Section 5.1.6. Changing Oil. After the first 90 days, then semi-annually. Remove plug from the front of the compressor head. Allow oil to drain. This will remove just over 112 of the oil contained in the head. To comppltely remove remaining oil, set the compressor at approximately a 45' angle. 5.1.2 Pressure Rellef Valve On a monthly basis, pull the test ring to determine if the valve is able to move freely. In the event that the system becomes overpressurized, this valve opens at 125 psi. CAUfION Use only Matrx oil PN 7700 0953. Other types of oil may void warranw. To add oil, lie cap on vented port located on the left side of the compressor heads. Check level and add oil as required to each head of multi-head units. I I Figure 5.1 Check 011 Level I I Figure 5.2. rest Relief Valve I Back Next Table of Contents ~- 1.1.3 Tank Drain Humidity levels vary dramatically between geographic renions and chanaina seasons. Water rnav accumulate i n k e receiver (s6ra>e) tank of the ~ ~ - ~ e rAirMax ies compressors in some installations with a refrigerant dryer downstream of the receiver tank. Purge the receiver tank of any water that has condensed and accumulated at the bottom by opening the drain valve at the manifold for 10-20 seconds. Vinyl tubing connected to this valve (Figure 5-3) fallows down along the side of the receiver tank. Any water which has accumulated in the bottom of the tank will be forced out of this tubing because the tank is pressurized. After purging for 10 -20 seconds, immediately return the drain valve to the closed position. .. I Figure 5-3. Drain Receiver Tank NOTE Ifleft open, no pressure builds in the receiver tank and the heads run continuously. This will result in overworking the compressor heads. J I Figure 5-4. Replace Air Intake/Muffler/Filter AFTER I HOUR = 5.1.4 Air Intake Muffler Replacement Depending on the conditions in the equipment toom in which the compressor is installed, the replacement frequency of the foam cell filters (Figure 5 4 ) will vary. Check the filters every three months to evaluate their effectiveness. Dust and particulates accumulate in the pores of the filter. The first few times, these filters can be rinsed in cool water and thoroughly air dried and then installed into the mufiler tube. As they begin to deteriorate, use new foam filters which can be ordered from an authorized hnatnt dealer (PN 7700 7079). Single head models require three filters, the dual head models use five while the triple units need six. Filter cleaning1 replacement is important because it requires more work for the compressor to draw air through a clogged filter. 5.1.5 System Leak Testing (Figure 5-5) Allow the compressor to reach 100 psi and shut down. Close storage tank outlet valve to isolate oompnssor from the piping system. Do not use any air for one hour. If the pressure gauge continues to drop while the outlet valve is closed, the leak is within the compressor. t h e pressure gauge drops a few psi each time the compressor turns off at 100 psi. If the pressure gauge drops after opening the outlet valve, the leak is within the piping system. NOTE ..-.- Operating with a system leak can potentially cause the compressor heads to operate at a higher than redammended duty cycle, resulting in premature wear and decreased life expectancy. Figure 5-5. System Pressure Test Back Next Table of Contents 4 1 51.6 Change Coalescing Fllter Element (AMb hllorlels) ! ' A viewpiece on the top portion of coalescing filter housing (figure 5-6), changes from green to red when the filter becomes clogged. As the filter becomes clogged, pressure differential increases, forcing the indicator into the red portion. The heads must be running in order to determine the condition of the filter element. This pesslrre buildup is due to inability of the compressed air to emciently pass through the filter element. Approximately every six months, replace the coalescing filter element at the base of desiccant tank (Matm PN 7700 5005). This element removes oil and particulates from the air entering the desiccant tank. VlEWPlECE CHANGES COLOR WHEN COMPRESSOR IS RUNNING GREEN: OK RED: REPLACE ELEMENT NOTE Oil removal is vital to the continuing operation of the desiccant drying system. If this filter deterlorates and becomes saturated, all is not effectively removed from the compressed alr before it enters the desiccant bed. If coated with oil, desiccant beads lose their water adsorbing ability and can no longer remove water vapor from the air. Once coated with oil the desiccant bad can not regenerate during the purge cycle and the deslccant tank must be replaced. READING VAUD ONLY WHEN HEADS PI ARE OPERAnNG 5.1.7. Desiccant Tank Replacement (AMD Models Only) Replacement desiccant tanks are available from authorized Matm dealers. Replacement tank part numbers are as follows: Compressor Sire Mat- Part No Single Dual Triple Install per instructions included with replacement tank. Figure 5-6. Change Filter FILTER ELEMENT Back Next Table of Contents A M 1 AMD-Series AirMax Compressors Symptom Compressor will not run. Probable Cause Electrical problem. Solution For Single Head Air Compressors Check the circuit breaker. Turn the breaker off completely and then back on firmly. If the compressor head does not come on and the circuit breaker is trlpped again, call your authorized service technician. For Multi-Head Air Compressors Turn off all selector switches. Reset the circuit breaker. Start the heads If you have a multi-head air compressor, you may be able individually to isolate the problem head. to isolate the problem head Once the problem head is isolated, call and run with one head for a your service technician. Most offices are limited time. See solution at able to run on one compressor head for a right. limited time. Note: thls procedure Is for emergencies only. If all the compressor heads do not come on and the circuit breaker is tripped again, call your authorized service techniclan. Air continuously bleeding from solenoid valve for longer than 60 seconds. Tank check valve is sticking. (Item #31, Figure 6-1). Call your Matrx service technician. Compressor runs but there is na air in aperatory. Compressor ball valve is closed. Open compressor ball valve. Call your authorized service technician. Open air line (or leak) in compressed air piping system. Oil particles in air line. Compressor tank drain valve is open. Close drain valve. Filter element of oil-removal filter has failed. Replace the filter element immediately as discussed on page 12. Note: An improperly maintained oil-removal air filter can allow oil particles into the system damaging expensive hand pieces and posslbly contamlnatlng the plplngsystem. Back I Next Table of Contents 5.2 Troubleshooting (Continued) Desiccant , Dryers (used with AMD-Series AirMax Compressors) Symptom Probable Cause Solution Air bleeding from the solenoid valve while heads are running. Solenoid valve not receiving power or failed. Check wire connections. Replace solenoid. Matrx pn: 7700 1325 - 230V units 7700 1324 - 115V unlts Air not bleeding from the solenoid valve when heads shut off. Solenoid clogged. Outlet port clogged. Solenoid sticking shut. Replace solenold. Moisture indicator is pink. Dryer not purging properly. Desiccant contaminated. Compressor over-used. Check all air tools to verify that compressor can supply enough flow. Check for leaks in air system. Call your Matrx sewice technician. Refrigerant Air Dryer (used with AM-Series AirMax Compressors) Symptom Probable Cause Solution " Water present in air lines and the analysis gauge on the dryer Is in the green zone. Water forms in pipes because air is cooled to a lower dewpoint. Check that the analysis gauge on the dyer is in the green zone. If the gauge is normal, check the separator bowl in the dryer. If the bowl Is full of water, call serrice to report the problem. Water in lines and the analysis gauge on the dryer is out of the green zone. Piping system extremely cold. The separator bowl is full of water and the auto drain is possibly stuck. Call your authorized service technician. Low pressure or no air in The dryer is frozen up. the operatories. Turn on bypass on top of the refrigerant dryer. The office can be run for a limited time while the dryer is thawing out. Allow 24 hours for the dyer to thaw out. If problem is still present after 24 hours, call your authorized sewice technician. Back Next Table of Contents 5.2 Troubleshooting (Continued) AM/ AMD-Series AirMax Compressor Troubleshooting Symptom After compressor is turned off, tank pressure bleeds down immediately to 80 psi and the head($) turn back on. Water downstream in handpieces or outlet stations. Probable Cause Air Imk Drying system not operating properly. Water leaking back into piping system from split diaphragm in dental unit. Compressor head will not start. When power is applied it makes a humming noise but will not start. Unit is not cycling belween 80 and 100 psl. Solution Closethe ball W e to isolate the compressor from the piping system. Allow the compressar to reach IW psi and shut down. If the tank maintains pressure (does not bleed down), the leak exis& in the downstream piping system. If the tank irnmdiately bleeds down after the head(s) turn off and the ball valve Is dosed, the leak is wntained at the compressor end. If tank pressure cannot be maintained and all pressure Is Heeding d m through the solenoid during the purge cycle, the tank check valve (item 36, figure 6-1) is allowing pressure in the tank to bleed to atmosphere as the desiccant system purges. If a refrigerant dryer is being used, the refrigerant should evaluated and possibly recharged. For Matrx compressors equipped with a desiccant drying system (the AMD Series), first check the indicator on the coalescing filter element housing. If red, change the filter element. The red indicator means the filter is saturated and may have deteriorated. If the filter has not been malntained for a long period of time, oil can escape downsbeam from the filter element causlng permanent damage to the desiccant. If, after changing the filter element and operating Me compressor between one and two working days, water continues to be present downstream, the desiccant is most likely inacfive. The only recourse is to replace the desiccant tank as discussed in section 5.1.7. Low voltage. Verify operating voltage. Capaclor and relay assembly not operating. Replace Capacitor and Relay Assembly. See Section 6 for part numbers. Pressure switch misadjusted. Adjust pressure switch. Back Table of Contents Next 5.3 Unit Schematics As an aid for troubleshooting by Matm authorized service technicians, Figures 5-8 and 5-9 provide schematics of single and dual head unlts. TO REMOTE CONTROL PANEL DEDICATED SUPPLY CIRCUIT 20A. 1 1 5 ~ < ~ ~ ~ ~ ~ AM-100 20A: 2081230V