Stryker T/Pump Series

Asset Type

Patient Warming System

Manufacturer

Stryker

Model

T/Pump Series

Models Covered

Legacy Gaymar/Stryker TP600 Series and TP700/TP700C, subject to the model-specific applicability notes below.

Manual Reference

C2Dx T/PUMP TP700/TP700C Maintenance Manual, document 101176 Rev. 3, August 2023; applicable legacy Gaymar/Stryker TP600 service information; and the exact operations manual for the unit under test.

Manufacturer Recommendation / AEM Status

The current C2Dx maintenance manual specifies emptying and cleaning TP700/TP700C pumps monthly, changing the water monthly, and performing preventive maintenance at least annually. Frequency may be increased based on use, and annual maintenance is for qualified personnel.

Stryker states that ownership and support of the Gaymar T/Pump line transferred to C2Dx. The current C2Dx maintenance manual specifically covers TP700 and TP700C. Use the exact applicable legacy manual for TP600 units; do not assume that TP700/TP700C internal, connector, alarm, thermostat, or adjustment instructions are identical.

The published TP600/TP700 family specifications are a 10-42 °C (50-107 °F) temperature range, ±1 °C (±2 °F) accuracy, and 9 gallons per hour minimum flow. Apply these only when the unit label and applicable manual confirm them. Any change to manufacturer-listed activities or intervals belongs under the facility's approved AEM program, risk assessment, maintenance history, and applicable regulatory requirements.

What This PM Procedure Covers

• Exact model, connector configuration, electrical rating, manual, and history
• Housing, membrane panel, cord, reservoir, hoses, connectors, O-rings, pads, and controls
• Monthly cleaning and water change
• Priming, circulation, flow, temperature, warnings, timer, backup-limit protection, and leaks
• Qualified internal inspection where specified
• Ground resistance and leakage-current testing

Required Tools and Equipment

• Exact maintenance/service manual for the model and revision
• Calibrated C2Dx/Gaymar TPT9 Flow and Temperature Tester, part number 100925000, or approved traceable equivalent
• Manufacturer-specified Test Probe Assembly when required
• Correct Clik-Tite or Colder-type test hoses/connectors for the unit
• Calibrated timer
• Manufacturer-approved water, cleaning supplies, lint-free cloths, and nonabrasive cleaner
• Electrical safety analyzer appropriate for grounded mains equipment
• Authorized hand tools and required PPE

Step-by-Step PM Procedure

1. Verify Identification and Applicability

Action: Record asset tag, serial number, exact TP600/TP700/TP700C model, connector type, rating, accessories, and service history. Confirm that the manual and test setup apply to that exact configuration.

Expected outcome: The unit matches CMMS and the correct model-specific procedure is available.

2. Review History

Action: Review leaks, flow warnings, temperature complaints, overheating, pad/hose damage, safety failures, cleaning history, and open repairs.

Expected outcome: Known faults are included in the test plan.

3. Prepare Safely

Action: Remove from patient use, disconnect accessories as directed, switch off, unplug, cool, and drain before cleaning or service access. Keep water away from electrical components and test equipment.

Expected outcome: The pump is safely isolated and prepared for maintenance.

4. Inspect Housing and Power Components

Action: Inspect housing, handle, feet, fasteners, labels, openings, cord, plug, earth pin, insulation, and strain relief. Inspect the membrane panel for cuts, cracks, lifting, liquid intrusion, damaged keys, or illegible indicators.

Expected outcome: External mechanical and electrical components are intact and safe.

5. Inspect Reservoir and Water Circuit

Action: Inspect fill cap/seal, reservoir, level markings, accessible tubing, fittings, and drain path for contamination, deposits, discoloration, deformation, looseness, or leakage.

Expected outcome: The reservoir and accessible circuit are clean, intact, sealed, and leak-free.

6. Inspect Hoses, Connectors, O-Rings, and Pads

Action: Check hoses and reusable pads for cuts, kinks, hardening, tears, abrasion, contamination, and leaks. Check connectors for cracks, secure attachment, free movement, and required O-rings. Confirm connector compatibility.

Expected outcome: Accessories are compatible, complete, undamaged, and leak-free.

7. Perform Monthly Cleaning and Water Change

Action: When due, empty and clean using the exact manufacturer-listed solution, concentration, circulation time, draining, rinsing, and drying instructions. Replace water with the manufacturer-specified water. Do not substitute chemicals or improvise descaling.

Expected outcome: Cleaning and water change are complete without contamination or retained solution.

8. Fill, Prime, and Check Controls

Action: Connect the correct test circuit, fill to the proper level, and prime per the manual. Power from a grounded supply. Check startup, circulation, display/indicators, keypad, temperature selection, timer, and setpoint lock where equipped.

Expected outcome: The pump starts, primes, circulates, and accepts controls without an active fault.

9. Measure Flow and Test Flow Warning

Action: Measure stabilized flow with the TPT9 or approved calibrated equivalent using the exact model setup. Record gallons per hour. Test the flow warning only by the manual's safe method; do not improvise a heated blocked-flow test.

Expected outcome: Flow is at least 9 gallons per hour where the published family specification applies, and the warning passes.

10. Verify Operating Temperature

Action: Test required settings using the specified water volume, connector arrangement, stabilization period, and TPT9/Test Probe setup. Record each setpoint, displayed value, independent temperature, and difference.

Expected outcome: Required points within the published 10-42 °C range meet ±1 °C accuracy unless the exact model manual specifies another service criterion.

11. Test Backup-Limit Protection

Action: Qualified personnel shall perform the backup-limit thermostat/secondary overtemperature test exactly as written for the model. Do not defeat protection or invent a trip-temperature test. Restore all connections and settings.

Expected outcome: Backup-limit protection operates and restores as specified without uncontrolled heating.

12. Complete Qualified Internal Inspection

Action: When required, unplug and drain before cover removal. Inspect wiring, grounding, terminals, tubing, clamps, pump/motor, manifold, heater area, reservoir, and mounts for looseness, overheating, corrosion, deposits, abrasion, or leakage. Reassemble completely before powered testing.

Expected outcome: Internal components and earth connections are secure, dry, undamaged, and correctly reassembled.

13. Check for Water Leakage

Action: With the circuit filled and circulating, inspect the cap, enclosure, reservoir, connectors, hoses, fittings, and pad throughout testing. Stop immediately if water approaches electrical components.

Expected outcome: No seepage, leakage, or unexplained water loss occurs.

14. Perform Electrical Safety Testing

Action: Perform protective-earth and leakage-current tests using the model manual and facility policy. For TP700/TP700C, compare with the current manual limits of 0.5 Ω maximum and 100 µA maximum. For TP600, use the exact legacy manual and facility criteria.

Expected outcome: Electrical-safety measurements meet applicable limits.

15. Final Verification

Action: Confirm stable circulation and temperature control, normal indicators, no warning, abnormal sound, odor, or leak. Restore water level, cap, settings, timer, lock, connectors, cord, and accessories. Clean, dry, and document the unit.

Expected outcome: The system is correctly configured and ready for service.

Electrical Safety Testing

For TP700/TP700C, the current C2Dx maintenance manual specifies 0.5 Ω maximum ground resistance and 100 µA maximum leakage current. For TP600, use the exact applicable legacy model/revision manual. Facility criteria may be more restrictive.

Ground resistance measured in ohms, expected ≤ 0.5 Ω or facility/NFPA 99 criteria if different:
Result =

Touch/chassis leakage measured in microamps:
Facility limit used =
Result =
Pass / Fail =

Pass / Fail Criteria

Pass

• Exact model, connector, rating, and applicable manual are verified
• Due cleaning, water change, and inspection are complete
• Housing, panel, cord, reservoir, hoses, connectors, O-rings, and pads pass
• Pump primes and circulates without contamination, abnormal noise, or leak
• Controls, indicators, timer, lock, warnings, and backup protection pass
• Flow and temperature meet applicable model specifications
• Required internal inspection and electrical safety pass

Remove From Service

• Applicable model procedure is unavailable for a required test
• Any safety-affecting housing, electrical, reservoir, connector, hose, seal, or pad defect
• Contamination, deposits, internal moisture, overheating, corrosion, or leakage remains
• Priming, circulation, flow, temperature, warning, control, or backup protection fails
• Uncontrolled heating, abnormal odor/noise, repeated fault, or unresolved complaint remains
• Electrical safety fails or authorized internal repair/calibration is required

Use the manufacturer service manual, facility policy, and approved AEM program to determine the final PM interval and return-to-service requirements.