OR management systems · Harmony family

Steris Harmony EMS: troubleshooting and error codes

The ServiceForge knowledge base holds 24 documented symptoms for the Steris Harmony EMS, with 28 ranked causes, 72 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Calibration: Column friction brakes

Adjust friction brake setscrews to achieve sufficient braking resistance on column

Ranked causes

1. Friction brake adjustment required (unknown)
2. Hidden setscrews need adjustment (unknown)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Friction brake adjustment - column caution

Column brake friction insufficient or excessive; requires adjustment of set screws to achieve proper braking

Ranked causes

1. Insufficient brake friction (occasional)
2. Excessive brake friction (occasional)

First check

Test column braking

Test point: Column vertical brake
Expected: Column holds load without slipping; smooth braking without excessive drag

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Plume Evacuation System does not produce airflow

No air flow detected at end of hose when PES is turned on at control panel

Ranked causes

1. 1 1/4" diameter vacuum line has restrictions or kinks (common)
2. Outlet at vacuum module is blocked (common)

First check

Turn on PES at control panel

Test point: PES control panel ON/OFF control
Expected: Unit powers on

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Traveling Crab installation with Supply Head or Column patient safety

Installation procedure for Traveling Crab into track rails, with two methods depending on available space between rail end and wall. Includes bearing play adjustment after insertion.

Ranked causes

1. Crab requires installation from end of rail when adequate space exists (common)
2. Crab requires insertion into rail when insufficient space at rail end (occasional)

First check

Verify adequate space exists between rail end and wall

Test point: Space between end of rail and wall
Expected: Sufficient space for Crab insertion from end

5 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Anesthetic equipment not hanging vertically patient safety

Equipment hangs at an angle rather than straight down.

Ranked causes

1. Allen screw (2) adjustment needed for vertical alignment (common)

First check

Verify anesthetic equipment hangs vertically using level

Test point: anesthetic equipment assembly
Expected: vertical hang confirmed by level
Tools: level

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Adjust swivel range on main and intermediate arms caution

Set maximum swivel range to prevent main arm collision with wall; adjustable in 45° increments up to 330° maximum

Ranked causes

1. Swivel range requires adjustment at installation (common)

First check

Verify compressed air supply is off before adjustment

Test point: Compressed air supply line
Expected: Air supply turned OFF

4 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Column friction brake adjustment caution

Column friction brakes require adjustment to ensure sufficient braking resistance during operation

Ranked causes

1. Friction brake insufficient (unknown)

First check

Test column braking resistance

Test point: Column assembly
Expected: Sufficient braking force

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Column/Support head swivel range

Set and limit the swivelling range of supply column to required angle using stop screws

Ranked causes

1. Swivel range adjustment required (unknown)

First check

Verify swivelling range

Test point: Supply column bearing
Expected: 320° default or up to 50° with stops installed

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Column/support head swivel range adjustment

Set swivelling range limit to 50° or less in 45° increments from full 320° range

Ranked causes

1. Swivel range requires limiting (unknown)

First check

Remove control column panels

Test point: Rounded corner panels
Expected: Panels removed and fasteners accessible

4 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Equipment carrier height adjustment patient safety

Equipment carrier height deviates from 870 mm factory setting; central part may fall out or holder not horizontal.

Ranked causes

1. Equipment carrier height out of specification (common)

First check

Measure equipment carrier height at top edge of pins above finished floor

Test point: top edge of pins
Expected: 870 mm
Tools: measuring tape or ruler

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Friction brake force adjustment

Set braking effect on arm rotational joints to desired strength; hubs near support head require less braking than those near main attachment.

Ranked causes

1. Friction brake set screws require adjustment (unknown)

First check

Identify brake segment orientation and stop screws

Test point: Each rotational joint
Expected: 12 threaded positions visible; 2 positions contain larger stop screws; remaining positions contain set screws

1 more check with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: friction brakes - column

Brake friction insufficient or excessive; column does not hold position or braking force is too great

Ranked causes

1. Brake friction requires adjustment (common)

First check

Test braking force

Test point: Column brake assembly
Expected: Sufficient braking to hold column in position

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Main arm bearing stop caution

Adjust main bearing stop position by removing and repositioning the stop plate to set swivel range limits.

Ranked causes

1. Swivel stop position requires relocation to new mounting plate position (occasional)

First check

Turn OFF compressed air if present

Test point: compressed air supply
Expected: air supply OFF

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Calibration: Motorized lifting arm pre-tension caution

Pendant column/head does not hang vertically in operating range under specified load; requires pre-tension adjustment to align properly

Ranked causes

1. Incorrect pre-tension on lifting arm (common)

First check

Verify pendant column/head alignment

Test point: Pendant head/column assembly
Expected: Hangs vertically in operating range under specified load
Tools: Level

4 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Shim adjustment for arm inclination caution

Excessive arm inclination under load requires shim insertion on main/intermediate bearing to equalize the tilt

Ranked causes

1. Arm inclination under load not satisfactory after level adjustments (unknown)

First check

Secure arm with struts before any work

Test point: Arm position
Expected: Arm held firmly in place by lift truck or struts

7 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Swivel range adjustment on main and intermediate arms patient safety

Set maximum swivel range in 45° increments up to 330° to prevent arm collision with wall during installation

Ranked causes

1. Swivel range requires adjustment at installation (common)

First check

Turn compressed air supply to unit OFF

Test point: Main air supply valve
Expected: Air supply shut off

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Swivel range on main and intermediate arms caution

Adjust swivel range in 30° increments up to maximum 330° to prevent arm collision and ensure proper articulation range.

Ranked causes

1. Swivel range requires adjustment at installation or maintenance (common)

First check

Turn OFF compressed air if present

Test point: compressed air supply
Expected: air supply OFF

8 more checks with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Calibration: Vertical adjustment limits - motorized units caution

Set height limit switches for motorized lifting arm to prevent interference with upper arm and accommodate customer floor variations

Ranked causes

1. Height limits not set for customer requirements (common)

First check

Verify upper arm clearance

Test point: Motorized arm fully raised position
Expected: Arm does not interfere with upper arm

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Control column panel removal required

Rounded corner panels need removal to access internal components

Ranked causes

1. Access needed to column internals (unknown)

First check

Verify gasket position before prying

Test point: Blue gasket
Expected: Gasket pushed up enough to insert screwdriver

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Control column stop position requires adjustment

Stop screws contact fixed stop at incorrect position during unit rotation

Ranked causes

1. Stop screw in wrong threaded position (unknown)

First check

Verify stop position during unit rotation

Test point: Stop screws against fixed stop
Expected: Stop screws contact fixed stop at desired position

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Friction brakes require adjustment

Brake segments need adjustment for proper operation

Ranked causes

1. Friction brake segments misaligned or loose (unknown)

First check

Inspect friction brake operation

Test point: Brake segments
Expected: Brakes hold position without slipping

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Intermediate arm swivel range adjustment caution

Adjust intermediate arm swivel similar to main arm procedure using stop plate repositioning

Ranked causes

1. Intermediate arm swivel requires setting (common)

First check

Adjust intermediate arm swivel stop plate position

Test point: Intermediate arm swivel adjustment
Expected: Stop plate shifted to new position in 30° increment

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

PES does not respond to foot switch control

Unit does not turn off and on when foot switch is operated after switching to Foot Switch position

Ranked causes

1. Foot switch malfunction or connection issue (unknown)

First check

Set power control switch to Foot Switch position

Test point: Power control switch
Expected: Switch is in Foot Switch position

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Traveling Crab bearing play adjustment

Fine adjustment of bearing play in Traveling Crab rails after insertion to ensure smooth operation with minimal play throughout travel range.

Ranked causes

1. Bearing play requires adjustment for smooth Crab movement (common)

First check

Hand-tighten adjusting screw

Test point: Adjusting screw (33)
Expected: Finger tight

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.