Maxton EMV10 User manual

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Table of Contents
Important Safeguards
Introduction and Features 1
Specification
Components - Port Locations 2
Installation - Valve Dimensions 3
Installation – Slowdown Distance / Control Signals 4
Installation – Field Wiring Diagram – Numbered 5
Installation – Field Wiring Diagram – Colored 6
Valve Controller Board Features
Valve Setup 7
Display Menu 8
Display Menu Continued 9
Troubleshooting Check List – Up Section 10
Troubleshooting Check List – Down Section 11
Troubleshooting Check List – Miscellaneous 12
Error History 13
IMPORTANT SAFEGUARDS
Read Instructions: All Safety, installation, and setup instructions should be read before installing or operating the EMV10 Electronic Motor Valve.
Failure to follow the installation and setup instruction may result in unsatisfactory performance, equipment damage, or physical injury.
1. Service: There are no user serviceable parts contained herein. Refer all service to qualified service personnel only.
2. Risk of Electrical Shock: Do not remove the valve cover except when making adjustments or servicing the valve. Always turn off all electrical
power sources before servicing any mechanical part or assembly. Do not place metal objects in contact with the energized Electronic Control
Board at any time.
3. EMV10 Power Sources: The EMV10 Electronic Motor Valve uses multiple electrical power sources. Hazardous voltages may be present
if every source to the EMV10 is not secured. Verify all voltage sources to the EMV10 are secured before making repairs.
4. Wiring: All wiring should be routed in such a way that it is not likely to be pulled, pinched, stepped on, have objects placed on it, or damaged
in any way.
5. Retain User Manual: The user manual should be retained for future reference.
INTRODUCTION AND FEATURES
The Maxton EMV10 Electronic Motor Valve was designed to meet a growing demand for low use limited access (LULA), handicapped and residential
hydraulic elevator applications. The EMV10 combines hydraulic and electronic control to provide excellent ride quality. The EMV10 has all the features
found in a commercial hydraulic control valves plus electronic safety control and adjustments allowing quick set up and easy problem analysis.
FEATURES
 Quick set up and less field adjustments required.
 Built in pressure and viscosity compensation.
 Ride performance is maintained from empty to fully loaded condition.
 Acceleration and deceleration are independent of load and oil viscosity.
 Regulated contract down speed, up leveling speed and down leveling speed.
 Stabilized leveling speed is achieved in a very short distance.

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SPECIFICATIONS
EMV10 SPECIFICATIONS
IMPERIAL METRIC
Flow Range 3 - 12 gpm 11 - 45 lpm
Operating Pressure
Min 150 psi 10 bar
Max 1000 psi 69 bar
Line Ports 3/4” NPT
Gauge Ports “B” 1/8” NPT
Pressure Port “S” 1/8” NPT
Operating Temperature 80 - 150ºF 26 - 65ºC
Oil Type Hydraulic ISO VG 32 150 SUS @ 100ºF
or equivalent biodegradable oil
Electrical Input Provided by Elevator Contractor
Valve Controller Power Supply +24 VDC 3.2A (Regulated)
Pump Disable Circuit +115-230VAC or 24VDC 
Coil Input Signals +115-230VAC or 24VDC
Overall Dimensions:
Width: 5-7/8” 149.2 mm
Height: 7 9/16” 192.1 mm
Depth: 8” 203.2 mm
Weight: 14 lbs. 6.4 kg.
MAJOR COMPONENTS & PORT LOCATIONS
Pressure switch port
“S” (on valve body)
Down (DV)
Solenoid & Coil
Relief Adjuster
Compensator
Strainer Access
Valve Control Board
(VCB)
Check Open
Orifice
Programming port
Motor Flow Control
(MFC) Assembly
TANK Port
PUMP Port
JACK Port
JACK Pressure
Gauge Port “B”
Check Closing Orifice
Manual Lowering
(Twist Handle or Push Button)
[Push Button Shown]
EMV10T

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PORT LOCATIONS:
Use pipe or hose fittings with the following port
locations as shown:
Pump: ¾” NPT Jack: ¾” NPT Tank: ¾” NPT
MOUNTING HOLES GUIDELINE: TOP VIEW
The dimensions above are for the cutout and hole
pattern if the valve is mounted on the tank lid. 5-7/8"
(149.2 mm)
JACK
PORT
2-3/8"
(60.3 mm)
6-9/16"
(166.7 mm)
1"
(25.4 mm)
VALVE DIMENSIONS
8"
(203.8 mm)
1-9/16"
(39.7 mm)
2-5/16"
(58.7 mm)
1-13/16"
(46 mm)
3"
(77.8 mm)
1"
(25.4 mm)
PUMP PORT
(below)
TANK PORT
(below)
JACK
PORT
3-7/32"
(81.8 mm)
2-7/16"
(61.9 mm)
3-1/16"
(77.8 mm)
3-5/16"
(84.1 mm)
1-9/16"
(39.7 mm)
.730”
(18.5 mm)
9/16"
(14.3 mm)
3-7/16"
(87.3 mm)
2” (51 mm) dia.
Cut out of tank lid
1-1/2” (38 mm) dia.
Cut out of tank lid
Mounting holes (3) places typical
1/4-20 threads
9/32 (7.1 mm) dia.
Cut out of tank lid
Valve

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CONTROL SIGNAL SEQUENCE
Installer to provide U, UL, D, and DL signals from main elevator controller to VCB (Valve Control Board).
 UL: For up travel, turn on at pump start, turn off to stop. With UL signal on and pump running, car moves up at leveling speed. For “soft stop”
pump should run about one half second after UL signal is turned off.
 U: Turn on with UL to run up at contract speed. Turn off at slowdown distance from floor.
 DL: Turn on to move downward at leveling speed. Turn off to stop.
 D: Turn on with DL signal to run down at contract speed. Turn off at slowdown distance above floor.
U
D
DL
UP
FULL SPEED
DOWN
FULL SPEED
PUMP
1/2 to 1 second after US signal cut off
UL Control signals are 115-230VAC or
24VDC and provided by elevator
contractor
RECOMMENDED SLOWDOWN DISTANCE FOR HOISTWAY SWITCH INSTALLATION
2-1/2” for each 10 FPM of car speed or use slowdown
distance table below:
127 cm for each 1 m/s of car speed or use slowdown distance
table below:
Elevator Speed
(ft./min.)
Slow down
distance
(in.)
30 8
35 9
40 10
45 11
50 12 ½
55 13 ¾
60 15
Elevator Speed
(m/sec.)
Slow down
distance
(cm)
0.15 20.3
0.18 22.9
0.20 25.4
0.23 27.9
0.25 31.8
0.28 35.6
0.30 38.1
SLOWDOWN DISTANCE

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FIELD WIRING DIAGRAM - NUMBERED WIRING HARNESS
Warning:
Failure to correctly follow the recommended procedures may result in damage and/or a hazardous condition.
Verify all voltages before applying power. Incorrect voltages will damage the EMV10 control board. Dedicated power supply must be
regulated at +24VDC and Rated at 3.2 amps minimum.
Interface to the EMV10 uses Maxton Field Interface Cable. Numbered wires are used to identify each electrical connection. Connect
each wire to the elevator controller function as described below.
VALVE POWER SUPPLY: (24VDC @ 3.2A)
GROUND (green) - Ground
+24VDC (9) - Connect to regulated 24VDC
power supply rated a 3.2A. Should be switched
on / off with elevators main power.
DC RTN (8) - Connect to the 24VDC power
supply (negative).
VALVE COIL SIGNAL:
U (5) - Up high speed coil signal
UL (4) - Up leveling coil signal
D (3) - Down high speed coil signal
DL (2) - Down leveling coil signal
COIL COMMON (6) - Connect to the coil
common signal
COIL SAFETY OUT (10) - Connect to
safety circuit relay input.
COIL SAFETY IN (11) - Connect to
safety circuit relay output.
ELEVATOR CONTROLLER
VALVE POWER
SUPPLY
24 VDC @ 3.2A
GROUND
+24VDC
DC RTN
U UL D DL COIL COM
COIL SAFETY OUT
…1…
GREEN
VALVE COIL SIGNAL OUTPUT
115‐230VAC or 24VDC
…9… …8… …5… …4… …3… …2… …6…
OUTPUT TO PUMP
MOTOR STARTER COIL
…10…
PUMP MOTOR STARTER SIGNAL
PUMP DISABLE CIRCUIT: This Circuit disables the
pump if the valve detects a malfunction.
Warning: Failure to use this circuit can result in a
hazardous condition
PUMP MOTOR STARTER SIGNAL (1) -
Pump motor starter signal from controller
OUTPUT (7) -
Pump signal output to pump motor starter coil
TEST:
To insure the pump disable circuit is wired correctly, first unplug
the Wiring Harness from the Valve Control Board. Place an Up
Call. The pump should not run. If the pump runs review wiring
then repeat test. If the pump still runs call Maxton for
assistance.
COIL SAFETY IN
…11…

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FIELD WIRING DIAGRAM - COLOR CODED WIRING HARNESS
Warning:
Failure to correctly follow the recommended procedures may result in damage and/or a hazardous condition.
Verify all voltages before applying power. Incorrect voltages will damage the EMV10 control board. Dedicated power supply must be
regulated at +24VDC and Rated at 3.2 amps minimum.
Interface to the EMV10 uses Maxton Field Interface Cable. Color Coded wires are used to identify each electrical connection. Connect
each wire to the elevator controller function as described below.
RED
GREEN
BLUE
VIOLET
YELLOW / BROWN
YELLOW / BLACK
YELLOW / RED
YELLOW / BLUE
YELLOW
OUTPUT TO PUMP
MOTOR STARTER COIL
PUMP DISABLE CIRCUIT: This Circuit disables the
pump if the valve detects a malfunction.
Warning: Failure to use this circuit can result in a
hazardous condition
PUMP MOTOR STARTER SIGNAL (red) -
Pump motor starter signal from controller
OUTPUT (brown) -
Pump signal output to pump motor starter coil
TEST:
To insure the pump disable circuit is wired correctly, first unplug
the Wiring Harness from the Valve Control Board. Place an Up
Call. The pump should not run. If the pump runs review wiring
then repeat test. If the pump still runs call Maxton for
assistance.
ELEVATOR CONTROLLER
VALVE POWER
SUPPLY
24 VDC @ 3.2A
GROUND
+24VDC
DC RTN
U UL D DL COIL COM
COIL SAFETY OUT
VALVE COIL SIGNAL OUTPUT
115‐230VAC or 24VDC
PUMP MOTOR STARTER SIGNAL
COIL SAFETY IN
YELLOW / WHITE
BLACK
VALVE POWER SUPPLY: (24VDC @ 3.2A)
GROUND (green) - Ground
+24VDC (blue) - Connect to regulated 24VDC
power supply rated a 3.2A. Should be
switched on / off with elevators main power.
DC RTN (violet) - Connect to the 24VDC
power supply (negative).
VALVE COIL SIGNAL:
U (yellow/brown) - Up high speed coil signal
UL (yellow/black) - Up leveling coil signal
D (yellow/red) - Down high speed coil signal
DL (yellow/blue) - Down leveling coil signal
COIL COMMON (yellow) - Connect to the
coil common signal
COIL SAFETY OUT (yellow/white) - Connect
to safety circuit relay input.
COIL SAFETY IN (black) - Connect to
safety circuit relay output.

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“DV” COIL
LED INDICATOR
Interface
Connector
Solenoid Coil
Connector
Motor & Sensor
Connector
LCD Display
“POWER”
LED INDICATOR
Menu Navigation
Buttons
Programming
Port
VALVE CONTROLLER BOARD FEATURES
VALVE SET UP
THE INFORMATION PRESENTED HEREIN IS FOR USE BY SKILLED HYDRAULIC ELEVATOR PROFESSIONALS
FACTORY SETTING: All valves are factory tested and set to the job specifications provided. Factory settings should only be changed if accurate car
speed information is available to the technician.
NORMAL OPERATION MODE: Make sure all connectors are plugged in to the VCB (Valve Control Board). The green “POWER” indicator is on and
there is no errors listed on the LCD display. These conditions indicate normal valve operation.
PRESSURE RELIEF ADJUSTMENT:
 Land car in pit and install pressure gauge in port “B”.
 Register an up call with a fully loaded car, making note of pressure gauge reading.
 Cancel the up call.
 Close the manual shut off valve to the jack.
 Set the relief adjuster to the minimum pressure position. To do this turn the relief adjuster screw fully CW until seated. Then turn CCW 3 full turns.
 Register an up call, observe pressure gauge and turn the relief adjuster CW to increase the pressure gage reading. The final setting should be in
accordance with state and local code requirements.
 Cancel the up call.
 Snugly tighten the relief adjuster nut and seal as required.
 Register an up call to verify the pressure relief setting.
 Cancel the up call.
 Open the manual shut off valve to the jack.
VALVE SET UP:
 Register up and down calls to verify FLOW (high speed), leveling speed, acceleration, deceleration and stop rates.
 If necessary, use the MENU BUTTONS to navigate to the ride quality setting to select different ride quality (rate). Setting “0” (factory default) pro-
vides the softest ride quality (rate), setting “9” provides the hardest ride quality (rate).
MANUAL LOWERING (ML): Twist Handle or Push Button
 ML is either a Twist handle or Push Button located on the right side of the valve.
 When it is necessary to lower the car, Twist the handle OUT (CCW) or press the Push Button.
NOTE: Manual lowering speed may vary with system pressure and jack size.
PROCEDURE FOR SETTING OVERSPEED FLOW WITH 11 AND 12 GPM WORKING FLOW:
 DO NOT USE OVERSPEED MENU UNDER ADVANCED SETTINGS AT THIS WORKING FLOW.
 After completely setting up the valve including the down flow. With car at the bottom floor, turn the Relief (R) adjuster out (CCW) to stop.
 Make an up call. Car should not move. Turn the Relief adjuster slowly IN (CW) until the car moves then one more turn IN. Car should make
normal up run and stop at the upper floor.
 Turn the Relief adjuster OUT (CCW) one turn. Make a down call. Car should be running down at speed faster than normal down run. Check car
speed if it complies with the Codes, 110 to 140 % of normal down high speed. If not, turn the Relief adjuster OUT (CCW) for faster or IN (CW) for
slower down high speed. Note the number of turns in this step.
 If an up run is needed, turn the Relief adjuster IN (CW) the same number of turn in Step 3.
 When the down high speed for overspeed condition is obtained, set the overspeed valve (or governor) as required.

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Upon power up, the Main Screen will Display. Screen must be active for
valve to operate in run mode. Screen displays active coil inputs during
operation and software version. Inputs are U, UL, D and DL.
DISPLAY
Press “LEFT/RIGHT” button to cycle through ten levels of Ride Quality
Settings.
Press “LEFT/RIGHT” button to cycle through +/- 3 fpm of adjustment in
up leveling.
DESCRIPTIONFUNCTION
Main Screen
(Run Mode)
Ride Quality (Rate)
Adjustment
Up Leveling
Adjustment
Down Leveling
Adjustment Press “LEFT/RIGHT” button to cycle through +/- 3 fpm of adjustment in
down leveling.
Advanced Menu
(OverSpeed, Error, Defaults)
Setup Menu
(Jack, Flow, Sizing)
Factory Menu
(Set Defaults,)
PASSWORD REQUIRED
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
enter the “ADVANCED MENU”. This menu allows you to enter Overspeed
Mode, view Temperature, Total Starts, and Error History, Delete Error History
and Restore Defaults. Press “BACK” to return to previous menu.
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
enter the “SETUP MENU”. This menu allows you to change the Jack Type,
Jack Size, MFC Sizing, and Leveling Sizing. Press “BACK” to return to
previous menu.
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
enter the “FACTORY MENU”. This Menus allows you to Set the Defaults.
Press “BACK” to return to previous menu.
MAIN MENU
Notification
 Press “UP or DOWN” button to cycle through the menu
 Flashing cursor indicates current setting
DESCRIPTION FUNCTION
Overspeed Mode
110% - 140% of
down flow value
Temperature History
Total Starts
View Error History
Displays the Minimum and Maximum temperature history of the valve
Displays the total number of starts.
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
view the error history. Valve will store up to 10 errors and will cycle through
them automatically. Possible errors: SENSOR ERROR, MOTOR ERROR,
and more.
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
enter the “OVERSPEED MODE” This function allows the user to perform an
overspeed test enabling the selection of 110% to 140% above the normal
down flow setting in down direction. Press “LEFT/RIGHT” button to cycle
through percentage above working flow and “ENTER” to begin test. Press
“BACK” to return to previous menu.
** Not applicable with a working flow setting of 11 or 12 GPM **
DISPLAY
ADVANCED MENU
DISPLAY MENU

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Press “LEFT/RIGHT” button to cycle to “Y” (yes) and press the “ENTER”
button to enter the “MFC SIZING”. Register up call when prompted. Adjust
size setting by pressing the “UP” button to increase sizing or “DOWN” button
to decrease sizing until the car reaches 0.3fpm
Press “LEFT/RIGHT” button to cycle through and select from two Jack
Types, Roped or Direct
DISPLAY
Press “LEFT/RIGHT” button to cycle through and select from fourteen
metric and standard jack sizes ranging from 1 1/2” - 4”.
Press “LEFT/RIGHT” button to cycle through and select from nineteen
contract flow settings, ranging from 3 – 12 GPM.
DESCRIPTIONFUNCTION
Jack Type
Jack Size
Up Flow Adjustment
Down Flow Adjustment
Press “LEFT/RIGHT” button to cycle through and select from nineteen
contract flow settings, ranging from 3 – 12 GPM.
MFC Sizing
(Only if instructed by
Maxton tech support)
Up Leveling Sizing
(Only as instructed by
Maxton tech support)
Down Leveling Sizing
(Only as instructed by
Maxton tech support)
Press “LEFT/RIGHT” button to cycle to “Y” (yes) and press the “ENTER”
button to enter the “UL SIZING”. Register up call when prompted. Adjust size
setting by pressing the “UP” button to increase sizing or “DOWN” button to
decrease sizing until the car reaches 8.0fpm
Press “LEFT/RIGHT” button to cycle to “Y” (yes) and press the “ENTER”
button to enter the “DL SIZING”. Register down call when prompted. Adjust
size setting by pressing the “UP” button to increase sizing or “DOWN” button
to decrease sizing until the car reaches 8.0fpm
SETUP MENU
DISPLAY MENU CONTINUED
FACTORY MENU PASSWORD REQUIRED
Set Customer Defaults
(Only as instructed by
Maxton tech support)
DISPLAY DESCRIPTIONFUNCTION
Press “LEFT/RIGHT” button to cycle to “Y” (yes) and press the
“ENTER” button to save the customer defaults.
**NOTE: THIS WILL OVERWRITE ANY PREVIOUS SPECIFICATIONS
ADVANCED MENU CONTINUED
DISPLAY DESCRIPTIONFUNCTION
Delete Error History
Restore Default
Settings
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
delete the error history. There will be a confirmation and the screen will
automatically cycle back.
Press “RIGHT” button to cycle to “Y” (yes) and press the “ENTER” button to
restore default settings. This function will return the valve settings to the
original job specifications provided at the time of purchase.

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SYMPTOM CAUSE CHECK REF.
Up call registered but no
up travel.
No power to VCB. Check VCB POWER indication. P7
Pump not running. Check pump disable circuit wiring P5, 6
No UL or U Input signal to VCB. Verify UL or U input signal, check for a broken or loose field interface
cable from elevator controller to VCB P5, 6
Pump runs, car does not
move.
Line shut-off valve Check line shut-off valve open.
Relief pressure set too low Check correct Relief pressure is set. P7
Clogged orifices, strainer. Check for oil contamination.
P2
Up Compensator Valve not closing. Up Compensator Spool jammed. Up Compensator Spring broken.
Call Maxton for Assistance
Up Acceleration rough.
Ride Quality setting. Change Ride Quality Setting. P7 , 8
Sizing position incorrect. Call Maxton For Assistance
Rail and / or packing friction. Check jack packing and guide shoes for
excessive friction.
Up high speed slow.
Low pump motor horsepower. Check motor horsepower rating.
Check line voltage.
Relief pressure set too low.
Check Relief pressure setting.
Note: If the Relief pressure is too low, the down
high speed will be faster than normal.
P7
Pump output low. Check pump specification.
Check pump inlet strainer.
Incorrect Flow setting. Change Flow setting. P7 , 8 , 9
Incorrect MFC sizing position. Call Maxton For Assistance
Incorrect Jack size setting. Change Jack size setting P7 , 8 , 9
Up Leveling Speed slow /
Stall
Incorrect Leveling Speed setting. Change Leveling Speed setting. P7, 8
Incorrect MFC sizing position. Call Maxton For Assistance
Incorrect Jack size setting. Change Jack size setting P7 , 8 , 9
Coil Sequence wrong Check controller for proper coil signal timing.
(i.e. U and UL dropping then UL re-energizing)
Car overshoots floor.
Up Leveling Speed too fast. Change Up Leveling Speed setting. P7, 8
Ride Quality selection too soft. Change Ride Quality Setting. P7, 8
Up flow setting higher then actual
pump output. Reset Flow setting. P7 , 8 , 9
Incorrect Jack size setting. Change Jack size setting. P7 , 8 , 9
U and/or UL signals turn off late. Check hoist way deceleration and stop switches.
Correct slowdown distance, if necessary. P4 , 7
Harsh Up Stop Not enough pump time Increase pump time. The pump should continue to
run for about one second after the car stops. P4
The first section of the check list deals with the UP movement, while the second deals with the DOWN movement. Use the following reference materi-
als in conjunction with the trouble shooting check list:Hydraulic Schematics, Operating Sequences, Setup Instructions, and Electronic Controller Status
Code Indications.
TROUBLESHOOTING CHECK LIST – UP SECTION

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SYMPTOM CAUSE CHECK REF.
Down call registered
but no down travel.
No power to VCB. P7
Line shut-off valve Check line shut-off valve open.
Tripped pipe rupture valve Check and reset pipe rupture valve.
D or DL signals to VCB missing.
Verify D, DL signals at elevator controller.
P5 , 6, 7
Check for a broken or loose field interface wire
from elevator controller to VCB.
DV solenoid not energized
Check the solenoid LED for power to the coil. Physically pick up the coil
(quickly put it back) to feel the magnetic field at the coil.
Replace coil, if necessary.
P5 , 6, 7
MFC malfunction Replace MFC, Call Maxton For Assistance
Car slowly creeps down
when down call registered
DV solenoid
Check voltage to solenoid coil.
P5 , 6, 7Check that DV solenoid is energized.
Replace solenoid coil, if necessary.
Check Open Orifice Clogged Remove and Flush Check Open Orifice, Call Maxton For Assistance
MFC malfunction Replace MFC, Call Maxton For Assistance
Down leak
Leak at jack or line Close line shut-off valve. If car still drifts down,
Leak at DV solenoid Check solenoid seat P2
Leak at Main Check Valve Remove check seat and view for damage and/or debris,
Call Maxton For Assistance
Manual Lowering Leaking Turn ML (Manual Lowering) screw out (CCW) and then turn in (CW) fully
to insure a good seat.
Slow start Rail and packing friction Check jack packing and guide shoe tightness.
Ride Quality setting Change Ride Quality Setting P7 , 8
Harsh or bouncy down
start
Air in hydraulic system Bleed air from jack.
Rail and / or packing friction Check jack packing and guide shoes for excessive friction.
Abrupt down start Shuttle stuck Call Maxton For Assistance
Incorrect MFC sizing position Call Maxton For Assistance
Down high speed too slow Incorrect Flow setting Reset Flow setting. P7 , 8 , 9
Down speed not
regulated (too fast)
Shuttle stuck Make a full up run. Wait for 10 seconds, then make a down run. If
problem repeats Call Maxton For Assistance
Clogged orifices or strainer Check for oil contamination. P2
Car overshoots floor
D and DL signal from elevator
controller
Check hoist way deceleration and stop switches. Adjust slowdown
distance, if necessary. P4
Down Leveling Speed too fast Change Down Leveling Speed setting. P7 , 8
Rate profile selection too soft Change Ride Quality setting. P7 , 8
Down leveling slow or
stalled.
Incorrect Down Leveling setting Change Down Leveling setting.
P7 , 8 , 9
Incorrect Jack size setting Change Jack size setting.
Down stop too soft or
hard.
Rate profile selection Change Ride Quality setting.
P7 , 8 , 9
Incorrect Jack size setting Change Jack size setting
Check VCB POWER indication
TROUBLESHOOTING CHECK LIST – DOWN SECTION

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TROUBLESHOOTING CHECK LIST - MISCELLANEOUS
SYMPTOM CAUSE CHECK REF.
After a run is complete car
moves down 2-8" during
pressure relief routine.
Closing Orifice Clogged Remove closing orifice and check for debris. 2
Check Piston not closed Call Maxton For Assistance
Erratic up and down
movement
(Stop and Go)
Sensor unable to read encoder disk Check sensor cavity for oil. Clean with contact cleaner and dry with
compressed air
Up high speed bogs down
motor,
down leak present
Check Piston Stuck Call Maxton For Assistance
Down High Speed
fluctuation,
Excessive noise on down
run
Pump Shuttle Stuck Call Maxton For Assistance

1728 ORBIT WAY - MINDEN - NEVADA - 89423-4114 - PHONE: [phone] - FAX: [phone] - WEB: maxtonvalve.com - EMAIL: [email protected]
6/26/2020
13
The valve controller program incorporates self diagnostic routines designed to identify conditions that can result in
incorrect or abnormal valve operation. The diagnostic routines have the ability to auto-correct most conditions that may be
encountered.
Error History:
If an error condition occurs the VCB will momentarily stop car movement, interrupt the pump operation and display an
error. If possible clear the cause of the condition and automatically return to normal operation. If experiencing large
numbers of error conditions, check the cables for loose connections and proper power to the VCB. To determine if an
error condition has occurred navigate to the Advanced Menu where there is a view history mode. This mode once entered
will display a number of errors recorded up to ten and then display those errors automatically at a three second interval.
Erase Error History:
To erase error history, navigate to the Delete History in the Advanced Menu. Select yes and there will be a confirmation
screen notifying that the operation is complete.
Note 2: For proper operation the elevator pump operation must be interrupted under various conditions.
Therefore be sure to utilize the PUMP DISABLE CIRCUITS in the valve installation as described on pg. 5 and 6
Error Meaning Probable Cause Action
DISK/SENSOR ERR MFC position error MFC MOTOR not moving Check Motor and Sensor for damage. Replace if necessary
MFC sensor damaged or blocked Check Motor and Sensor for damage. Replace if necessary
SENSOR ERROR MFC position error MFC MOTOR not moving Check Motor and Sensor for damage. Replace if necessary
MFC sensor damaged or blocked Check Motor and Sensor for damage. Replace if necessary
MOTOR ERROR MFC position error MFC MOTOR not moving Check Motor and Sensor for damage. Replace if necessary
MFC sensor damaged or blocked Check Motor and Sensor for damage. Replace if necessary
HOMING ERROR MFC position error MFC MOTOR not moving Check Motor and Sensor for damage. Replace if necessary
MFC sensor damaged or blocked Check Motor and Sensor for damage. Replace if necessary
UNKNOWN ERROR Program Error
MCU program crash Restart electronic control board by removing power. Replace if
necessary
Lost communication with Motor IC Restart electronic control board by removing power. Replace if
necessary
INVALID CALL Coil Issue All or improper coil call Ensure proper coils wiring. Replace if necessary
Noise on coil causing false calls Check static voltage on coil inputs. Replace if necessary
OPEN WINDING Motor Error Connector became dislodge Remove connector and place back in position . Replace if
necessary
Motor wire cut or severed Check motor wires for obvious damage. Replace if necessary
SHORTED WINDING Motor IC Error Internal IC short Check silver pad left of LCD for excessive heat. Replace if
necessary
Motor Short Check motor for excessive heat. Replace if necessary
MOTOR OVERTEMP Motor IC Error
Internal IC error for excessive heat Check silver pad left of LCD for excessive heat. Replace if
necessary
Short circuit condition Check silver pad left of LCD for excessive heat. Replace if
necessary
MOTOR TEMP HIGH Motor IC Error Approaching over temperature on
Motor IC
MOTOR STALLED Motor Error Motor has bound up during run Check Motor for damage. Replace if necessary
Motor had excess torque applied Check Motor for damage. Replace if necessary
Non-Critical Error just indicates motor IC is running hot.
Replace if necessary
ERROR HISTORY