Midmark 319 Service manual

-003

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Style B

thru

319

-006

Power Examination

Service and

Table

Serial Number Prefix: HN, KK, KL & V

Some service parts may not

NO LONGER IN

PRODUCTION

Parts Manual

be available for this product!

Ritter 319

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

MA382400

319

-003 thru

-006

SF-1555 Part No. 004-0065-00 Rev. M (4/09/08)

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TABLE OF CONTENTS

Section/Paragraph Page Section/Paragraph Page

IMPORTANT INSTRUCTIONS

General Safety Instructions..........................................iii

Warnings..................................................................... iii

Warranty Instructions .................................................. iii

SECTION I GENERAL INFORMATION

1.1 Scope of Manual ......................................... 1-1

1.2 How to Use Manual ..................................... 1-1

1.3 Description of 319 Power Examination

Table ....................................................... 1-1

1.4 Standard Torque Specifications .................... 1-4

1.5 Specifications ............................................. 1-4

1.6 Parts Replacement Ordering ....................... 1-5

1.7 Special Tools .............................................. 1-6

SECTION II TESTING AND TROUBLESHOOTING

2.1 Operational Test .......................................... 2-1

2.2 Troubleshooting Procedures ........................ 2-1

SECTION III SCHEDULED MAINTENANCE

3.1 Scheduled Maintenance .............................. 3-1

SECTION IV MAINTENANCE/SERVICE INSTRUCTIONS

4.1 Introduction ................................................. 4-1

4.2 Motor Cover Assembly Removal /

Installation ............................................... 4-1

4.3 Checking / Adding Oil To Motor Pump ........ 4-1

4.4 Up Functions Shuttle Valve Removal /

Installation ............................................... 4-2

4.5 Down Functions Shuttle Valve Removal /

Installation ............................................... 4-3

4.6 Anti-cavitation Solenoid Valve Removal /

Installation ............................................... 4-4

4.7 Up Functions Relief Valve Removal /

Installation ............................................... 4-5

4.8 Down Functions Relief Valve Removal /

Installation ............................................... 4-6

4.9 Motor Pump Assembly - Complete

Removal / Installation .............................. 4-7

4.10 Motor Pump Removal / Installation ............. 4-8

4.11 Motor Shaft Seal Removal / Installation ...... 4-9

4.12 Back Cylinder Removal / Installation ......... 4-11

4.13 Tilt Cylinder Removal / Installation ............ 4-13

4.14 Base Cylinder Removal / Installation ......... 4-15

4.15 Foot Cylinder Removal / Installation .......... 4-17

4.16 Time Delay Relay Removal /

Installation ............................................. 4-19

4.17 Capacitors Removal / Installation .............. 4-20

4.18 Pan Safety Limit Switch Removal /

Installation ............................................. 4-21

4.19 Chain Assembly Adjustment ..................... 4-23

4.20 Base Slide Assembly Removal /

Installation ............................................. 4-23

4.21 Headrest Adjustment ................................. 4-27

4.22 Headrest Handles Handle Stops

Adjustment ............................................ 4-28

4.23 Stirrup Assembly And Components

Removal / Installation ............................ 4-28

4.24 Typical Foot Switch Removal /

Installation ............................................. 4-29

4.25 Upholstery Removal / Installation .............. 4-30

4.26 Hydraulic System Flushing Procedure ....... 4-33

SECTION V SCHEMATICS AND DIAGRAMS

5.1 Electrical Schematics / Wiring Diagrams ..... 5-1

5.2 Hydraulic Flow Diagrams ............................. 5-5

SECTION VI PARTS LIST

6.1 Introduction ................................................. 6-1

6.2 Description of Columns ............................... 6-1

6.3 Torque Specifications and Important

Assembly Notes ....................................... 6-1

Pictorial Index ............................................. 6-2

Pictorial Index ............................................. 6-3

Back Components ...................................... 6-4.*

Back Components ...................................... 6-5.*

Upholstery Set - Standard ............................ 6-6

Upholstery Set - Narrow ............................... 6-7

Upholstery Set - Styled ................................ 6-8

Upholstery Set - Thermoform ....................... 6-9

Hydraulic System ....................................... 6-10

Headrest Assembly .................................. 6-11.*

Seat Components .................................... 6-12.*

Seat Components .................................... 6-13.*

Stirrup Assembly ..................................... 6-14.*

Footboard Components ............................ 6-15.*

Base Covers And Enclosures .................... 6-16

Base Mechanical Components ................. 6-17.*

Base Slide Assembly ................................. 6-18

Base Electrical Components - Domestic .... 6-19

Base Electrical Components - Export ........ 6-20*

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

TABLE OF CONTENTS - CONTINUED

Return To Table Of Contents

Section/Paragraph Page Section/Paragraph Page

Motor / Pump Components ........................ 6-21

Foot Control Assembly............................... 6-22

COMMENTS ............................................................ 7-1

FAX ORDERING FORM .......................................... 7-2

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

IMPORTANT INSTRUCTIONS

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General Safety Instructions

Safety First: The primary concern of Midmark Corporation is that this table is maintained with the

safety of the patient and staff in mind. To assure that services and repairs are completed safely and correctly, proceed as follows:

(1) Read this entire manual before performing any

services or repairs on this table.

(2) Be sure you understand the instructions

contained in this manual before attempting to service or repair this table.

Safety Alert Symbols

Throughout this manual are safety alert symbols that call attention to particular procedures. These items are used as follows:

DANGER

A DANGER is used for an imminently

hazardous operating procedure, practice, or condition which, if not correctly followed, will result in loss of life or serious personal injury.

NOTE

A NOTE is used to amplify an operating procedure, practice or condition.

Warranty Instructions

Refer to the Midmark “Limited Warranty” printed in the Installation and Operation Manual for warranty information. Failure to follow the guidelines listed below will void the warranty and/or render the 319 Power Examination Table unsafe for operation.

• In the event of a malfunction, do not attempt to operate the table until necessary repairs have been made.

• Do not attempt to disassemble table, replace malfunctioning or damaged components, or perform adjustments unless you are one of Midmark’s authorized service technicians.

• Do not substitute parts of another manufacturer when replacing inoperative or damaged components. Use only Midmark replacement parts.

WARNING

A WARNING is used for a potentially

hazardous operating procedure, practice, or condition which, if not correctly followed, could result in loss of life or serious personal injury.

CAUTION

A CAUTION is used for a potentially

hazardous operating procedure, practice, or condition which, if not correctly followed, could result in minor or moderate injury. It may also be used to alert against unsafe practices.

EQUIPMENT ALERT

An EQUIPMENT ALERT is used for an

imminently or potentially hazardous operating procedure, practice, or condition which, if not correctly followed, will or could result in serious, moderate, or minor damage to unit.

Return To Table Of Contents

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

SECTION I

GENERAL INFORMATION

1.1 Scope of Manual

This manual contains detailed troubleshooting, scheduled maintenance, maintenance, and service instructions for 319 Power Examination Table. This manual is intended to be used by Midmark’s authorized service technicians.

1.2 How to Use Manual

A. Manual Use When Performing Scheduled Mainte-

nance.

(1) Perform inspections and services listed in

Scheduled Maintenance Chart (Refer to para 3.1).

(2) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

B. Manual Use When Table Is Malfunctioning And

Cause Is Unknown.

The major serviceable components of the table are the motor pump, up functions relief valve (600 PSI), down functions relief valve (400 PSI), up functions shuttle valve, down functions shuttle valve, anti-cavitation solenoid valve, capacitors, control panel with terminal block, back cylinder, foot cylinder, tilt cylinder, base cylinder, base slide assembly, chain assembly, pan safety limit switch (optional on some tables), time delay relay, foot switches, and isolation transformer (export units only).

The Model 319 Power Examination Table series is available in two different configurations which are distinguished as follows:

Model 319-003 115 VAC , w/o siderails and

w/o treatment pan.

Model 319-004 220 VAC , w/o siderails and

w/o treatment pan.

B. Theory of Operation (See Section IV, Figures 5-1

thru 5-4 for wiring diagrams and electrical schematics, and Figures 5-5 and 5-6 for hydraulic flow diagrams.)

(1) Perform an operational test on table (Refer to

para 2.1).

(2) Perform troubleshooting procedures listed in

Troubleshooting Guide (Refer to para 2.2).

(3) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

C. Manual Use When Damaged Component Is Known.

(1) Replace or adjust component in accordance

with maintenance/service instructions (Refer to para 4.1).

1.3 Description Of 319 Power Examination Table

A. General Description (See Figure 1-1).

The 319 Power Examination Table is an examination table designed specifically for performing general medical examinations and procedures.

On domestic units, 115 VAC is supplied directly to the circuitry of the table. On export units, 220 VAC is supplied to isolation transformer. The isolation transformer then supplies 115 VAC to the circuitry of the table.

When no functions are selected, 115 VAC is supplied to terminals 1 and 2 of all foot switches. There is no path to neutral, however, so no current flows and nothing happens. When the operator selects one of the four up functions (BACK UP, TABLE UP, FOOT UP, or TILT UP) with the foot control, three paths to neutral are created. Current flows from terminal 2 to terminal 4 of switch and then across the motor pump winding T2 to neutral, starting the motor pump pumping. Current also flows from terminal 2 to terminal 4 of switch and then across the coil of the anti-cavitation solenoid valve, energizing the valve and causing it to open. Current also flows from terminal 2 to terminal 3 of switch and then across the coil of the cylinder solenoid valve and the time delay relay, energizing the valve and causing it to open. The time delay relay delays current flow across the coil of the cylinder solenoid valve for 1/10 of a second, causing it to energize 1/10 of a second after

SECTION I

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GENERAL INFORMATION

BACK

CYLINDER

BASE

CYLINDER

ANTI-CAVITATION SOLENOID VALVE

MOTOR

PUMP

DOWN FUNCTION

SHUTTLE VALVE

UP FUNCTION

SHUTTLE VALVE

TERMINAL

BLOCK

TIME DELAY

RELAY

DOWN FUNCTION

RELIEF VALVE

PAN SAFETY

LIMIT SWITCH

TILT

CYLINDER

FOOT

CYLINDER

CHAIN

ASSEMBLY

BASE SLIDE

ASSEMBLY

UP FUNCTION

RELIEF VALVE

TRANSFORMER

(EXPORT UNITS ONLY)

CAPACITORS

ISOLATION

Figure 1-1. Major Components

FOOT

SWITCH

FOOT

CONTROL

MA398400

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

the motor pump and anti-cavitation solenoid valve have energized. This allows the motor pump to run and oil pressure to build first, so table top will not drift downward slightly before starting to rise. On tables that have an optional treatment pan assembly, the foot function also has a pan safety limit switch in its circuit. If the treatment pan assembly is not pushed into its fully stowed position, the pan safety limit switch will not be tripped. If the pan safety limit switch is not tripped, current flow is interrupted, keeping the cylinder solenoid valve from energizing. This safety feature prevents the table operator from accidentally colliding the foot section into the treatment pan assembly.

When the motor pump starts pumping, suction is created by the rotating pump gears, which allows oil to defeat the reservoir check valve and flow into the pump gears. The pump gears pressurize the oil which flows to the up function shuttle valve. The check ball and shuttle in the up function shuttle valve are pushed to the open position by the oil, allowing oil to flow through the shuttle valve by flowing around the check ball (with the shuttle in the open position, oil is prevented from flowing through the reservoir ports and returning to the reservoir). The oil then flows through the open cylinder solenoid valve at the base of the selected cylinder, extending the cylinder rod. When the cylinder rod extends, oil is forced out of the rod end of the cylinder, through the open anti-cavitation solenoid valve and to the down function shuttle valve. The check ball and the shuttle in the down function shuttle valve are pushed to the closed position by the oil, which prevents oil from flowing through the shuttle valve and into the motor pump, but allows the oil to flow through the newly uncovered reservoir ports into the reservoir. When the cylinder rod reaches the end of its travel, the up function relief valve opens when the pressure reaches 525 - 600 PSI (36.2 - 41.4 BARS) and allows the oil to return to the reservoir. This prevents the motor pump from developing too high of pressures and damaging the hydraulic system components, hoses, or the motor pump itself.

When the operator releases the pedal on the foot control, the path to neutral is opened, causing the motor pump to shut down and the anti-cavitation solenoid valve and the cylinder solenoid valve to de-energize, causing the valves to close.

When no functions are selected, 115 VAC is supplied to terminals 1 and 2 of all foot switches. There is no path

to neutral, however, so no current flows and nothing happens. When the operator selects one of the four down functions (BACK DOWN, TABLE DOWN, FOOT DOWN, or TILT DOWN) with the foot control, two paths to neutral are created. Current flows from terminal 2 to terminal 4 of switch and then across the motor pump winding T3 to neutral, starting the motor pump pumping. Current also flows from terminal 2 to terminal 3 of switch and then across the coil of the cylinder solenoid valve and the time delay relay, energizing the valve and causing it to open. The time delay relay delays current flow across the coil of the cylinder solenoid valve for 1/ 10 of a second, causing it to energize 1/10 of a second after the motor pump and anti-cavitation solenoid valve have energized. This allows the motor pump to run and oil pressure to build before table is operated, so table top will not cavitate. The foot function also has a pan safety limit switch in its circuit. If the treatment pan assembly is not pushed into its fully stowed position, the pan safety limit switch will not be tripped. If the pan safety limit switch is not tripped, current flow is interrupted, keeping the cylinder solenoid valve from energizing. This safety feature prevents the table operator from accidentally colliding the foot section into the treatment pan assembly.

When the motor pump starts pumping, suction is created by the rotating pump gears, which allows oil to defeat the reservoir check valve and flow into the pump gears. The pump gears pressurize the oil which flows to the down function shuttle valve. The check ball and shuttle in the down function shuttle valve are pushed to the open position by the oil, allowing oil to flow through the shuttle valve by flowing around the check ball (with the shuttle in the open position, oil is prevented from flowing through the reservoir ports and returning to the reservoir). The oil then flows through the open anticavitation solenoid valve and into the rod end of the cylinder, causing the cylinder rod to retract. When the cylinder rod retracts, oil is forced out of the base of the cylinder, through the open cylinder solenoid valve to the up function shuttle valve. The check ball and the shuttle in the up function shuttle valve are pushed to the closed position by the oil, which prevents oil from flowing through the shuttle valve and into the motor pump, but allows the oil to flow through the newly uncovered reservoir ports into the reservoir. When the cylinder rod reaches the end of its travel, the down functions relief valve opens when the pressure reaches 250 - 325 PSI (17.2 - 22.4 BARS) and allows the oil to

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

return to the reservoir. This prevents the motor pump from developing too high of pressures and damaging the hydraulic system components, hoses, or the motor pump itself.

When the operator releases the pedal on the foot control, the path to neutral is opened, causing the motor pump to shut down and the cylinder solenoid valve to de-energize, causing the valve to close.

The anti-cavitation solenoid valve is in the hydraulic system to prevent oil from escaping out of the rod end of a cylinder while the table is not being moved. Otherwise, a cylinder rod would be able to extend on its own if upward pressure was placed on that function of the table top by the doctor or patient.

The cylinder solenoid valves are in the hydraulic system to prevent oil from escaping out of the base of the cylinder assemblies. Otherwise, a cylinder assembly could retract on its own, allowing the table top to drift.

1.4 Standard Torque Specifications

The following standard torque specifications in Table 1-1 apply to the various hardware used on the units unless otherwise listed elsewhere in service procedures or parts illustrations:

Shipping Carton ...... 58 in. "L" x 31 in. "W" x 42 in. "H"

(147 cm x 79 cm x 107 cm)

Dimensions (See Figure 1-2):

Table Top Length .............................. 70 in. (177.8 cm)

Table Top Length (headrest extended) ............... 80 in.

(203.2 cm)

Table Top Width .................................. 27 in. (68.6 cm)

Overall Width ...................................... 27 in. (68.6 cm)

Table Positioning (Adjustable):

Standard Base Table Top Height .......... 26 in. to 42 in.

(66 cm to 107 cm)

Weight Capacity .................................. 325 lb (147.3 kg)

Oil Used In Hydraulic System ....................... light grade

medicinal mineral oil

Hydraulic System

Oil Capacity ..................... Approx. 2.5 quarts (2.4 liters)

Motor Pump Reservoir Capacity ......... 1 quart (.946 liter)

Electrical Requirements:

115 VAC Unit ............................ 110 - 120 VAC, 60 HZ,

12 amp, single phase

230 VAC Unit ..................... 220 - 240 VAC, 50 - 60 HZ,

12 amp, single phase

Table 1-1. Torque Specifications

Hardware Size Torque Values

#6 ........................... 11 to 21 inch / lbs. (1.2 to 2.3 N•M)

#8 ........................... 20 to 30 inch / lbs. (2.2 to 3.3 N•M)

#10 .......................... 32 to 42 inch / lbs. (3.6 to 4.8 N•M)

1/4" ......................... 75 to 85 inch / lbs. (8.5 to 9.6 N•M)

5/16" .................... 18 to 22 foot / lbs. (24.4 to 29.8 N•M)

3/8" ...................... 31 to 35 foot / lbs. (42.0 to 47.5 N•M)

1/2" ...................... 50 to 60 foot / lbs. (67.8 to 81.4 N•M)

1.5 SPECIFICATIONS

Factual data for the 319 Power Examination Table is provided in Table 1-2. Also, see Figure 1-2.

Table 1-2. Specifications

Description Data

Weight:

Fixed Base

Without Shipping Carton ................. 390 lb (176.8 kg)

With Shipping Carton ...................... 455 lb (206.7 kg)

Power Consumption:

115 VAC Unit ........................................... 960 WATTS,

8 amps @ 120 VAC

230 VAC Unit ........................................... 960 WATTS,

4 amps @ 240 VAC

Recommended Circuit:

A separate (dedicated) circuit is recommended for this table. The table electrical circuit with other appliances or equipment unless the circuit is rated for the additional load.

Up Function Relief Valve Setting............ Valve opens at

Down Function Relief Valve Setting ....... Valve opens at

should not

be connected to an

525 to 600 PSI

(36.2 to 41.4 BARS)

250 to 325 PSI

(17.2 to 22.4 BARS)

70" LONG (MIN.)

Return To Table Of Contents

80" LONG (MAX.)

SECTION I

GENERAL INFORMATION

23" WIDE BASE

21"

(MIN.)

CORD

90°

31"

BASE

45°

CORD

27" WIDE SEAT

26"

(Min.)

42"

(MAX.)

MA398500

Figure 1-2. Table Dimensions

1.6 Parts Replacement Ordering

If a part replacement is required, order the part directly from the factory as follows:

NOTE

It is

important

Number

ing a service call, or seeking technical advice.

(1) Refer to Figure 1-3 to determine the location of

the model number (A) and serial number (B) of the table and record this data.

that the

entire Model and Serial

be presented when ordering parts, schedul-

MA398600

Figure 1-3. Model Number / Serial

Number Location

(2) Refer to the Parts List to determine the item

numbers of the parts, part numbers of the parts, descriptions of the parts, and quantities of parts needed and record this data (Refer to para 6.1).

NOTE

Ask the Purchasing Department of the company that owns the table for this information. Otherwise, this information may be obtained from the dealer that sold the table.

(3) Determine the installation date of the table and

record this data.

Description of Special Tool

Multimeter Commercially Available Any Type Used to perform continuity and voltage checks.

Torque Wrench Commercially Available Any Type Used to tighten all hardware to torque values

Name / Address / Phone

Table 1-3. Special Tool List

Manufacturer's

Part Number

Purpose of Special Tool

specified.

SECTION I

Return To Table Of Contents

GENERAL INFORMATION

(4) Call Midmark with the recorded information and

ask for the Medical Products Technical Services Department. See back cover of this manual for the phone number or use the Fax Order Form (See page 7-2 for Fax Order Form).

1.7 Special Tools

Table 1-3 lists all of the special tools needed to repair the table, how to obtain the special tools, and the purpose of each special tool.

TESTING AND TROUBLESHOOTING

Return To Table Of Contents

2.1 Operational Test (See Figure 2-1)

SECTION II

TESTING AND TROUBLESHOOTING

SECTION II

In order to effectively diagnose the malfunction of the table, it may be necessary to perform an operational test as follows:

WARNING

Refer to the Operator Manual for

complete instructions on operating the table. Failure to do so could result in personal injury.

NOTE

The Operational Test, for the most part, only describes what should happen when the table is operated. If the table does something other than described, a problem has been discovered. Refer to the Troubleshooting Guide to determine the cause of the problem and its correction.

(1) Plug the table into a grounded, non-isolated,

correctly polarized outlet that has the proper voltage output for the table. See Figure 2-1.

(2) Depress TABLE UP, TABLE DOWN, BACK

UP, BACK DOWN, TILT UP, TILT DOWN, FOOT UP, and FOOT DOWN pedals on foot control.

(3) Observe. The table top should move in the

direction corresponding to the pedal which is being depressed. Movement should be steady and should not be too slow or too fast.

NOTE

Steps 4 thru 7 apply only to units which have a pan slide assembly / treatment pan (it is an option on some units).

(4) Lower FOOT DOWN function all the way. Pull

the pan slide assembly outward until pan safety limit switch is no longer tripped. Depress either FOOT UP or FOOT DOWN pedal on foot control.

TABLE

TOP

BACK

SECTION

SEAT

SECTION

FOOT

SECTION

PAN SLIDE ASSEMBLY (OPTIONAL

ON SOME

UNITS)

FOOT

CONTROL

MA403400

Figure 2-1. Operational Test

(6) Push pan slide assembly inward until pan

safety limit switch is tripped. Depress either FOOT UP or FOOT DOWN pedal on foot control.

(7) Observe. The foot section of table top should

move when FOOT UP or FOOT DOWN pedal is depressed.

2.2 Troubleshooting Procedures

Table 2-1 is a Troubleshooting Guide which is used to determine the cause of the malfunction.

(5) Observe. The foot section of table top should

not move when either FOOT UP or FOOT DOWN pedal is depressed.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

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TESTING AND TROUBLESHOOTING

Return To Table Of Contents

Table 2-1. Troubleshooting Guide - Continued

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SECTION II

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SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

The TABLE DOWN, BACK DOWN, TILT DOWN, and FOOT DOWN functions do not work, but TABLE UP, BACK UP, TILT UP, and FOOT UP functions do.

Motor pump runs when a down function foot pedal is depressed, but table top does not move.

Down function shuttle valve is malfunctioning.

Motor pump is defective. Replace suspect motor

Check to see if check ball is loose in down function shuttle valve or adjacent elbow (check ball should be held in shuttle valve by metal ring).

pump with known working motor pump.

Replace down function shuttle valve. Refer to para 4.5.

Replace motor pump. Refer to para 4.9 or 4.10.

TABLE UP function works, but TABLE DOWN function does not or TABLE DOWN function works but TABLE UP function does not. All other functions work.

BACK UP function works, but BACK DOWN function does not or BACK DOWN function works but BACK UP function does not. All other functions work.

Motor pump does not run when a down function foot pedal is depressed, but runs when an up function is pressed.

Motor pump does not run and base cylinder solenoid valve does not energize.

Motor pump runs but base cylinder solenoid valve does not energize or vice versa.

Motor pump does not run and back cylinder solenoid valve does not energize.

Motor pump runs but back cylinder solenoid valve does not energize or vice versa.

Motor pump is defective. Replace suspect motor

Wire connection in foot control is loose.

TABLE UP or TABLE DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

TABLE UP or TABLE DOWN foot switch is malfunctioning.

BACK UP or BACK DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

BACK UP or BACK DOWN foot switch is malfunctioning.

pump with known working motor pump.

Check all wiring connections in foot control.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Replace motor pump. Refer to para 4.9 or 4.10.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

TESTING AND TROUBLESHOOTING

Return To Table Of Contents

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

TILT UP function works, but TILT DOWN function does not or TILT DOWN function works but TILT UP function does not. All other functions work.

FOOT UP function works, but FOOT DOWN function does not or FOOT DOWN function works but FOOT UP function does not. All other functions work.

TABLE UP and TABLE DOWN functions do not work. All other functions work.

Motor pump does not run and tilt cylinder solenoid valve does not energize.

Motor pump runs but tilt cylinder solenoid valve does not energize or vice versa.

Motor pump does not run and foot cylinder solenoid valve does not energize.

Motor pump runs but foot cylinder solenoid valve does not energize or vice versa.

Motor pump runs when TABLE UP or TABLE DOWN foot pedal is depressed, but table top does not move.

TILT UP or TILT DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

TILT UP or TILT DOWN foot switch is malfunctioning.

FOOT UP or FOOT DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

FOOT UP or FOOT DOWN foot switch is malfunctioning.

Base cylinder solenoid valve is malfunctioning.

White wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wire running from terminal block to base cylinder solenoid valve is broken or disconnected.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check to see if base cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Check continuity of wire and connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Replace base cylinder. Refer to para 4.14.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

BACK UP and BACK DOWN functions do not work. All other functions work.

Motor pump runs when BACK UP or BACK DOWN foot pedal is depressed, but table does not move.

Back cylinder solenoid valve is malfunctioning.

Check to see if back cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Replace back cylinder. Refer to para 4.12.

TILT UP and TILT DOWN functions do not work. All other functions work.

FOOT UP and FOOT DOWN functions do not work. All other functions work.

Motor pump runs when TILT UP or TILT DOWN foot pedal is depressed, but table does not move.

Motor pump runs when FOOT UP or FOOT DOWN foot pedal is depressed, but foot section does not move.

White/black wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wire running from terminal block to back cylinder solenoid valve is broken or disconnected.

Tilt cylinder solenoid valve is malfunctioning.

Orange wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wire running from terminal block to tilt cylinder solenoid valve is broken or disconnected.

Foot cylinder solenoid valve is malfunctioning.

Red/black wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wires running from terminal block to pan safety limit switch and foot cylinder solenoid valve are broken or disconnected.

Treatment pan assembly is not pushed in all the way (applies only to units with an optional treatment plan).

Check continuity of wire and connections.

Check to see if tilt cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Check continuity of wire and connections.

Check to see if foot cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Check continuity of wire and connections.

Check that the treatment pan assembly is pushed in all the way.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace tilt cylinder. Refer to para 4.13.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot cylinder. Refer to para 4.15.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Push treatment pan assembly in all the way.

TESTING AND TROUBLESHOOTING

Return To Table Of Contents

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

FOOT UP and FOOT DOWN functions do not work. All other functions work - Continued.

Any of the four functions drift by themselves.

Back section of table top may be lifted by hand or tilt function may drift by itself.

Table moves fine for light patient, but will not move or moves slowly for very heavy patient.

Excessive sideways play of table top.

Motor pump runs when FOOT UP or FOOT DOWN foot pedal is depressed, but foot section does not move Continued (applies only to units with an optional treatment pan).

Table functions properly otherwise.

Occurs for both the up and down functions.

Occurs for up functions only.

Occurs for down functions only.

Table is not stable and can be moved from side to side.

Pan safety limit switch is out of adjustment.

Pan safety limit switch is malfunctioning.

A cylinder solenoid valve is stuck in open position or is malfunctioning.

A foot switch is malfunctioning and holding cylinder solenoid valve in the open position.

Anti-cavitation solenoid valve is malfunctioning.

Hydraulic system is low on mineral oil.

Up functions and down functions relief valves are malfunctioning.

Up functions relief valve is malfunctioning.

Down function relief valve is malfunctioning.

Chain assemblies are loose. Check tension of chain

Base slide assembly is worn or deformed.

Check to see if pan safety limit switch is being tripped by treatment pan assembly.

Perform continuity check on pan safety limit switch (pan in = closed).

Try to flush foreign objects out of cylinder solenoid valve by running oil through cylinder in both directions ten times.

Use multimeter to check for voltage at terminal 3 of suspect foot switch (no voltage should be present when foot switch is in OFF position).

Replace suspect anti-cavitation solenoid valve with known working anti-cavitation solenoid valve.

Check oil level in reservoir. If necessary, add oil to

Replace suspect relief valves with known working relief valves.

Replace suspect up functions relief valve with known working relief valve.

Replace suspect down functions relief valve with known working relief valve.

assemblies.

Check condition of base slide assembly.

Adjust pan safety limit switch so it is tripped when treatment pan assembly is pushed in all the way.

Replace pan safety limit switch. Refer to para 4.18.

Replace malfunctioning cylinder assembly.

Replace foot switch. Refer to para 4.24

Replace anti-cavitation solenoid valve. Refer to para

4.6.

reservoir. Refer to para 4.3.

Replace up functions and down functions relief valves. Refer to paras 4.7 and 4.8.

Replace up functions relief valve. Refer to para 4.7.

Replace down functions relief valve. Refer to para 4.8.

Adjust tension of chain assemblies. Refer to para

4.19.

Replace base slide assembly. Refer to para 4.20.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

SCHEDULED MAINTENANCE

Return To Table Of Contents

SECTION III

SCHEDULED MAINTENANCE

SECTION III

3.1 Scheduled Maintenance

periodically on the table. These inspections and services should be performed as often as indicated in

Table 3-1 is a Scheduled Maintenance Chart which lists

the chart.

the inspections and services that should be performed

Table 3-1. Scheduled Maintenance Chart

Interval Inspection or Service What to Do

Semi-annually Obvious damage Visually check condition of table for obvious damage such as: cracks in components, missing

Fasteners/hardware Check table for missing or loose fasteners/hardware. Replace any missing hardware and tighten

Warning and instructional decals

Pivot points/moving parts/accessories

Hydraulic hoses and fittings

Foot control Check that foot control works correctly. Make sure foot pedals contact switch properly.

Hydraulic functions Check that all four functions operate properly. If not, refer to the Troubleshooting Guide to

Cylinders Inspect all cylinders for signs of internal leaking or for weak operation. Replace cylinders as

Drift in table Check each cylinder to see if it drifts. Replace cylinder if necessary.

Oil level Check oil level in motor pump. Add oil to motor pump if necessary. Refer to para 4.3.

Stirrup Assemblies Check that stirrup assemblies lock into one of three positions. Check for wear. Replace

Headrest Assembly Check headrest for proper adjustment. If headrest does not have enough holding power, adjust

Pan safety limit switch Check that pan safety limit switch prevents foot function from moving when limit switch is not

Excessive sideways play of table top

Anti-cavitation solenoid valve

Upholstery Check all upholstery for rips, tears, or excessive wear. Replace cushions as necessary. Refer to

Accessories Check that all accessories have all of their components and that they function properly. If

Operational Test Perform an Operational Test to determine if the table is operating within its specifications (Refer to

components, dents in components, leaking oil, or any other visible damage which would cause table to be unsafe to operate or would compromise its performance. Repair table as necessary.

any loose hardware as necessary.

Check for missing or illegible decals. Replace decals as necessary.

Lubricate all exposed pivot points, moving parts, and accessories with silicone based lubricant.

Check all hydraulic hoses and fittings for leaks. Replace any components causing leaks. Replace any hoses which have kinks, cuts, holes, or other damage.

determine the cause of the problem. Clean or replace components as necessary.

necessary.

components as necessary. Refer to para 4.23.

headrest handles. Refer to para 4.21.

tripped.

Check that table top does not have excessive side play. Adjust chain assembly if necessary. Refer to para 4.19.

Check to see if back section may be lifted by hand or if the tilt function drifts by itself. If so, replace anti-cavitation solenoid valve. Refer to para 4.6.

para 4.25.

necessary, repair or replace the accessory.

para 2.1). Replace or adjust any malfunctioning components.

SECTION III

Return To Table Of Contents

SCHEDULED MAINTENANCE

4.1 Introduction

Return To Table Of Contents

SECTION IV

MAINTENANCE / SERVICE

SECTION IV

MAINTENANCE / SERVICE INSTRUCTIONS

WARNING

Refer to the Operator Manual for

complete instructions on operating the table. Failure to do so could result in personal injury.

NOTE

Perform an operational test on the table after the repair is completed to confirm the repair was properly made and that

The following paragraphs contain removal, installation, repair, and adjustment procedures for the table.

all

malfunctions were repaired.

4.2 Motor Cover Assembly Removal / Installation

A. Removal

WARNING

Always disconnect the power cord from the outlet before removing any of the table's covers/shrouds or making any repairs to prevent the possibility of electrical shock. Failure to comply with these instructions could result in severe personal injury or death.

(1) Unplug table power cord from outlet.

NOTE

220 VAC (export units) contain an additional strap on each side of the back outer shroud which helps secure the back outer shroud.

MA394900

Figure 4-1. Motor Cover Assembly

Removal / Installation

4.3 Checking / Adding Oil To Motor Pump

A. Checking / Adding Oil

(1) Move the BASE DOWN, BACK DOWN, TILT

DOWN, and FOOT DOWN functions all the way down.

(2) Remove motor cover assembly (Refer to para

4.2).

(3) Remove filler cap (1, Figure 4-2) from motor

pump (2).

(2) Remove six screws (1, Figure 4-1) and motor

cover assembly (2) from back outer shroud (3).

B. Installation

(1) Install motor cover assembly (2) against back

outer shroud (3) and secure with six screws (1), making sure top edge of motor cover assembly is inserted behind lip (A) of back outer shroud.

(2) Plug table power cord into outlet.

NOTE

Newer models do not have screw (3) or oil level check hole. Check oil level thru the fill port.

(4) Remove screw (3) and gasket (4) from motor

pump (2).

(5) Check oil level. If oil level in reservoir is not

even with oil level check hole, oil must be added.

(6) Place a rag under oil level check hole (A).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

4.4 Up Functions Shuttle Valve Removal / Installation

A. Removal

WARNING

(1) Unplug table power cord from outlet.

(2) Remove motor cover (Refer to para 4.2).

NOTE

The up functions shuttle valve is lower than the oil level in the motor pump reservoir and oil will flow out of the up functions shuttle valve once the hose assembly is disconnected.

(3) Place drain pan (A) under up functions shuttle

valve (1, Figure 4-3).

MA395000

Figure 4-2. Checking / Adding Oil To Motor Pump

(4) Disconnect hose assembly (2) from elbow (B) of

up functions shuttle valve (1).

(5) Remove up functions shuttle valve (1) from

motor pump (3).

EQUIPMENT ALERT

Hydraulic system is designed for use with light grade mineral oil only. Failure to

comply could result in hydraulic system failure.

(7) Add oil to fill hole (B) until oil starts to run out of

oil level check hole (A).

(8) Install gasket (4) and screw (3) on motor

pump (2).

(9) Install filler cap (1) on motor pump (2).

(10) Move each function to its up and down limit

several times. Then repeat steps 1 thru 9.

(11) Install motor cover assembly (Refer to

para 4.2).

(12) Dispose of used oil in accordance with local

regulations.

B. Installation

(1) Coat two o-rings (C) on up functions shuttle

valve (1) with mineral oil or vaseline.

(2) Install up functions shuttle valve (1) in motor

pump (3).

(3) Connect hose assembly (2) to elbow (B) of up

functions shuttle valve (1).

(4) If necessary, add oil to motor pump (Refer to

para 4.3).

(5) Install motor cover assembly (Refer to

para 4.2).

(6) Plug table power cord into outlet.

(7) Dispose of used oil in accordance with local

regulations.

Return To Table Of Contents

SECTION IV

MAINTENANCE / SERVICE

NOTE

The down functions shuttle valve is slightly lower

than the oil level in the motor pump reservoir and oil will flow out of the down functions shuttle valve once the hose assembly is disconnected.

(3) Place rags or drain pan (A) under down func-

tions shuttle valve (1, Figure 4-4).

Figure 4-3. Up Functions Shuttle Valve

Removal / Installation

MA395100

4.5 Down Functions Shuttle Valve Removal / Installation

A. Removal

WARNING

Always disconnect the power cord

from the outlet before removing any of the table's covers/shrouds or making any repairs to prevent the possibility of electrical shock. Failure to comply with these instructions could result in severe personal injury or death.

(1) Unplug table power cord from outlet.

(2) Remove motor cover assembly (Refer to

para 4.2).

MA395200

Figure 4-4. Down Functions Shuttle Valve

Removal / Installation

(4) Using a wrench to hold male connector (2)

stationary, loosen jam nut (B) of elbow (3). Disconnect elbow from male connector.

(5) Remove elbow (3) from down function shuttle

valve (1).

(6) Remove down functions shuttle valve (1) from

motor pump (4).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

B. Installation

NOTE

The down functions shuttle valve is sent from factory with an elbow installed on it. Remove it per step 1.

(1) Remove elbow from down function shuttle

valve (1). Discard elbow.

(2) Coat two o-rings on down functions shuttle

valve (1) with mineral oil or vaseline.

(3) Install down functions shuttle valve (1) in motor

pump (4).

(4) Coat threads of male connector (2) and elbow

(3) with pipe thread tape or sealant.

(5) Install elbow (3) on down functions shuttle

valve (1).

(6) Connect elbow (3) to male connector (2) and

secure by tightening jam nut.

(5) Pull anti-cavitation solenoid valve wires (4) out

thru wire hole (B).

(6) Disconnect hose assembly (6) from elbow (7).

(7) Using a wrench to hold male connector (8)

stationary, loosen jam nut (C) of elbow (9). Disconnect male connector (8) from elbow (9).

(8) Remove elbow (7) and male connector (8) from

anti-cavitation solenoid valve (10).

(7) If necessary, add oil to motor pump (Refer to

para 4.3).

(8) Install motor cover assembly (Refer to

para 4.2).

(9) Plug table power cord into outlet.

(10) Dispose of used oil in accordance with local

regulations.

4.6 Anti-Cavitation Solenoid Valve Removal / Installation

A. Removal

(1) Unplug table power cord from outlet.

(2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove two screws (1, Figure 4-5) and control

cover (2) from control panel (3).

Figure 4-5. Anti-cavitation Solenoid Valve

Removal / Installation

B. Installation

EQUIPMENT ALERT

Do not coat last two threads of

elbow and male connector with teflon tape or sealant. Otherwise, little particles of the tape / sealant can break loose and can contaminate hydraulic system.

MA395300

(4) Loosen two terminal screws (A); then tag and

disconnect anti-cavitation solenoid valve wires (4) from terminal block (5).

(1) Coat threads of elbow (7) and male connector

(8) with pipe thread tape or sealant.

(2) Install elbow (7) and male connector (8) on anti-

Return To Table Of Contents

cavitation solenoid valve (10).

(3) Connect hose assembly (6) to elbow (7).

(4) Coat threads of male connector (8) with pipe

thread tape or sealant.

SECTION IV

MAINTENANCE / SERVICE

(5) Connect elbow (9) to male connector (8) and

secure by tightening jam nut (C).

(6) Feed two anti-cavitation solenoid valve wires

(4) thru wire hole (B).

(7) Connect two anti-cavitation solenoid valve

wires (4) to terminal block (5) and secure by tightening two terminal screws (A).

(8) Install control cover (2) on control panel (3) and

secure with two screws (1).

(9) Install motor cover assembly (Refer to

para 4.2).

(10) Plug table power cord into outlet.

4.7 Up Functions Relief Valve Removal / Installation

A. Removal

(1) If possible, raise TABLE UP function all the

way up.

(2) Unplug table power cord from outlet.

(3) Remove motor cover assembly (Refer to

para 4.2).

(4) Remove four screws (1, Figure 4-6) and back

outer shroud (2) from left and right hand outer shrouds (3).

NOTE

The back inner shroud must be removed if it will obstruct removal of up functions relief valve.

(5) If necessary, remove eight screws (4) and back

inner shroud (5) from left and right hand inner shrouds (6).

Figure 4-6. Up Functions Relief Valve

Removal / Installation

NOTE

Oil will flow out of relief valve port when up functions relief valve is removed. Either have the new up functions relief valve ready to install or place a drain pan under relief valve port to catch oil.

(6) Remove up functions relief valve (7) from motor

pump (8).

MA395400

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

B. Installation

(1) Coat two o-rings (A) on up functions relief valve

(7) with mineral oil or vaseline.

EQUIPMENT ALERT

Make sure relief valve (7) has "600"

stamped on its hex head (B); it be stamped "L2". Failure to install proper relief valve will result in faulty table performance.

(2) Install up functions relief valve (7) in motor

pump (8).

(3) If removed, install back inner shroud (5) on left

and right inner shrouds (6) and secure with eight screws (4).

(4) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(5) If necessary, add oil to motor pump (Refer to

para 4.3).

(6) Install motor cover assembly (Refer to

para 4.2).

(7) Plug table power cord into receptacle.

(8) Dispose of used oil in accordance with local

regulations.

must not

4.8 Down Functions Relief Valve Removal / Installation

A. Removal

(1) Unplug table power cord from outlet.

(2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove four screws (1, Figure 4-7) and back

outer shroud (2) from left and right hand outer shrouds (3).

Figure 4-7. Down Functions Relief Valve

Removal / Installation

(4) If necessary, remove eight screws (4) and back

inner shroud (5) from left and right hand inner shrouds (6).

NOTE

The back inner shroud must be removed if it will obstruct removal of up functions relief valve.

Oil will flow out of relief valve port when down functions relief valve is removed. Either have the new down functions relief valve ready to install or place a drain pan under relief valve port to catch oil.

MA395500

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(5) Remove down functions relief valve (7) from

motor pump (8).

B. Installation

(1) Coat two o-rings (A) on down functions relief

valve (7) with mineral oil or vaseline.

EQUIPMENT ALERT

Make sure relief valve (7) has "L2"

stamped on its hex head (B); it be stamped "600". Failure to install proper relief valve will result in faulty table performance.

(2) Install down functions relief valve (7) in motor

pump (8).

(3) If removed, install back inner shroud (5) on left

and right inner shrouds (6) and secure with eight screws (4).

(4) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

must not

(5) If necessary, add oil to motor pump (Refer to

para 4.3).

(6) Install motor cover assembly (Refer to

para 4.2).

(7) Plug table power cord into receptacle.

(8) Dispose of used oil in accordance with local

regulations.

4.9 Motor Pump Assembly - Complete Removal / Installation

A. Removal

(1) Unplug table power cord from outlet.

(2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove four screws (1, Figure 4-8) and back

outer shroud (2) from left and right hand outer shrouds (3).

Figure 4-8. Motor Pump Assembly - Complete Removal / Installation

MA395600

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(4) Remove two screws (4) and control cover (5)

from control panel (6).

(5) Loosen three terminal screws; then tag and

disconnect three motor pump wires (7) from terminal block (8).

(6) Pull motor pump wires (7) out thru wire hole.

(7) Loosen two terminal screws; then tag and

disconnect anti-cavitation solenoid valve wires (9) from terminal block (8).

(8) Pull anti-cavitation solenoid valve wires (9) out

thru wire hole.

(9) Remove four nuts (10) from four motor

mounts (11).

(10) Disconnect hose assembly (12) from male

elbow (13).

(11) Place a drain pan under elbow (14).

(12) Disconnect hose assembly (15) from elbow

(14). Allow oil to drain into drain pan.

(13) Remove motor pump assembly (16) from four

motor mounts (11).

B. Installation

(1) Install motor pump assembly (16) on four motor

mounts (11) and secure with four nuts (10).

(2) Connect hose assembly (15) to elbow (14).

(3) Connect hose assembly (12) to male el-

bow (13).

(4) Feed two anti-cavitation solenoid valve wires

(9) thru wire hole.

(8) Install control cover (5) on control panel (6) and

secure with two screws (4).

(9) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(10) Add oil to motor pump (Refer to para 4.3).

(11) Install motor cover assembly (Refer to

para 4.2).

(12) Plug table power cord into outlet.

(13) Dispose of used oil in accordance with local

regulations.

4.10 Motor Pump Removal / Installation

A. Removal

(1) Unplug table power cord from outlet.

(2) Remove motor pump assembly - Complete

(Refer to para 4.9).

(3) Remove filler cap (A) and drain any remaining

oil into drain pan (See Figure 4-9).

(4) Using a wrench to hold male connector (1,

Figure 4-9) stationary, loosen jam nut (B) of elbow (2). Disconnect male connector/anticavitation solenoid valve (C) from elbow.

(5) Remove down functions shuttle valve (3) and

up functions shuttle valve (4) from motor pump (5).

(6) Remove two screws (6), lockwashers (7), and

motor base (8) from motor pump (5).

B. Installation

(5) Connect two anti-cavitation solenoid valve

wires (9) to terminal block (8) and secure by tightening two terminal screws.

(6) Feed three motor pump wires (7) thru wire hole.

(7) Connect three motor pump wires (7) to terminal

block (8) and secure by tightening three terminal screws.

(1) Install motor base (8) on motor pump (5) and

secure with two lockwashers (7) and screws (6).

(2) Install up functions shuttle valve (4) and down

functions shuttle valve (3) on motor pump (5).

(3) Coat threads of male connector (1) with pipe

thread tape or sealant.

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Midmark 319 Service manual

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