Instruction Manual
CAUTION
Olympic Warmette
®
Models 48/49 and 55/56
Read and be familiar with this manual before installing,
operating, or servicing this device. To ensure operator,
technician, and patient safety, use only as specified in
this manual.
602027A
Product Manufacturer:
Natus Medical Incorporated
5900 First Avenue South
Seattle, WA 98108 USA
Global sales & support: 1-800-303-0306
Phone: +1-206-767-3500
Fax: +1-206-762-4200
Web: www.natus.com
The information in this manual is subject to change without notice.
No part of this manual may be photocopied, reproduced, translated, or reduced to
any electronic medium without the express written permission of Natus Medical
Incorporated.
All tradenames and trademarks mentioned herein are property of their respective
owners.
Copyright ©2009 Natus Medical Incorporated. All rights reserved.
Contents
Section 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Section 2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Section 3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Assembling the Warmette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Inspecting the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Testing the Warmette. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Electrical Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Operating the Warmette. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Controls and Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Section 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Removing the Trays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Quarterly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Cleaning the Lint Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Cleaning the Inside of the Upper Cabinet . . . . . . . . . . . . . . . . . . . . . 4-3
Cleaning the Blower Housing and Blower Wheel . . . . . . . . . . . . . . . 4-4
Cleaning the Heater Plenum and Box . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Testing the Thermal Cut-out Function . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Section 5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Section 6 Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Servicing the Warmette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Repair Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Temperature Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Replacing the Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Removing the Access Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Replacing the Mains Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Replacing the Heater Indicator Lamp . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Replacing the Thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Olympic Warmette Models 48/49 and 55/56 Instruction Manual i
Replacing the Thermostat Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Replacing the Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Replacing the Thermal Cut-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Replacing the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
Section 7 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Section 8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Appendix A Drawings and Schematics . . . . . . . . . . . . . . . . . . . . . . . . A-1
ii Olympic Warmette Models 48/49 and 55/56 Instruction Manual
List of Figures
Model 48/49 and Model 55/56 dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Model 48/49 anchor holes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Model 48/49 anchor hole placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Model 55/56 anchor holes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Model 55/56 anchor hole placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Screw locations inside Warmette door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Removing the front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Blower/Filter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Removing the tray for cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Location of the lint filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Blower assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Access panel assembly — exploded view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Access panel assembly — side view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Screw locations inside Warmette door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Removing the front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Blower/Filter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Model 48/49/55/56, Olympic Warmette Wiring Diagram, Drawing No. 700192 Rev. C . .
A-1
Model 48/49/55/56, Olympic Warmette Schematic, Drawing No. 700193 . . . . . . . . . . A-2
Model 48/49/55/56, Olympic Warmette Drawing No. 700194 . . . . . . . . . . . . . . . . . . . A-3
Model 48/49/55/56 Olympic Warmette Drawing No. 700195 . . . . . . . . . . . . . . . . . . . . A-4
Olympic Warmette Models 48/49 and 55/56 Instruction Manual iii
iv Olympic Warmette Models 48/49 and 55/56 Instruction Manual
List of Tables
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Product symbology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Troubleshooting chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Replacement parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Olympic Warmette Models 48/49 and 55/56 Instruction Manual v
vi Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Overview
NOTE
#
CAUTION
WARNING
This section provides an overview of the Olympic Warmette®, including the
intended use and a description of the controls and symbols.
About this Manual
This manual provides the necessary information to install, maintain, and service the
Olympic Warmette
under the direct supervision of a licensed medical practitioner. The installation and
service instructions in this manual are intended for use by qualified service
technicians.
Section
1
. The operating instructions in this manual are intended for use
®
Conventions
Table 1.1 describes the conventions used in this manual.
Table 1.1
Convention Description
BUTTON
Conventions
Notes provide additional information to clarify a point in the text.
Cautions indicate situations that, if not avoided, could result in minor
to moderate injury to the patient or operator, or damage to the equipment.
Warnings indicate situations that, if not avoided, could result in
serious injury or death to the patient or operator.
This character style represents buttons and controls that the user
can touch or press.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 1-1
Intended Use
Symbols
Table 1.2 describes the symbols used on this device, packaging, and its accessories.
Table 1.2
Intended Use
The Warmettes are intended for warming fluids, blankets or other linens in a
hospital setting.
Product symbology
Symbol Description Symbol Description
Ground Line (hot conductor)
Read instructions Neutral (neutral conductor)
Mains power ON Alternating current (AC)
voltage
Mains power OFF Hot surface
1-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Description
21 in.
86 in.
86 in.
26 in.
51.8 in.
Leveling feet
Allow approx. 1/2 in.
vertical adjustment
Temperature
controls
12-ft. Power cord
located on back needs
2-in. clearance (one for
each cabinet)
21 in.
Model 48/49
Model 55/56
Description
The Olympic Warmette is a large-capacity, free-standing warming cabinet. It is
available in two sizes with the option of convenient see-through doors on the front
and back for either size.
The Warmette has a fully-enclosed, recirculating air system that warms blankets
and bottles quickly and uniformly. Forced-air distributes heat evenly throughout
the entire cabinet, so supplies are heated rapidly no matter where they are placed.
Mesh shelves allow air to move under and around supplies.
Figure 1.1
Model 48/49 and Model 55/56 dimensions
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 1-3
Description
1-4 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Installation
CAUTION
NOTE
#
CAUTION
NOTE
#
This section describes how to install the Olympic Warmette Models 48/49
and
55/56.
Read and be familiar with this manual before installing, operating, or servicing this
device. To ensure operator, technician, and patient safety, use only as specified in
this manual.
Only qualified technicians should assemble and install this product.
The Warmette Models 48 and 55 have clear doors on the front (see Figure 1.1 on page 1-3).
The Models 49 and 56 have an additional set of doors on the back side. The Models 48/49
and 55/56 are assembled in the same manner.
Section
2
Assembling the Warmette
When you first receive your Warmette from the factory, minimal assembly
required.
is
Required Items:
Level
Soap-and-water or liquid disinfectant
Towel
To assemble the Warmette:
1 After uncrating, install the leveling feet and stand the Warmette upright.
2 Unpack the bottom tray(s) and put in place in the warming cabinet (see
Figure 1.1 on page 1-3).
The bottom tray(s) must be in place for the Warmette to operate properly.
3 Clean all metal surfaces with a towel moistened with soap-and-water or liquid
disinfectant. Plexiglas
®
doors must be cleaned with soap and water.
Never use alcohol to clean the doors as alcohol will damage the Plexiglas®.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 2-1
Assembling the Warmette
CAUTION
Leveling feet
Anchor holes
Center line
9.92 in.
6 in.
Anchor holes
1.45 in.
17.5 in.
4 After the Warmette is in place, adjust the leveling feet.
5 Use the level to ensure the Warmette is evenly balanced.
The Warmette must be bolted to the floor.
To install floor anchors:
1 Access the anchor holes by removing the bottom tray (for Models 48/49, see
Figure 2.1 and Figure 2.2; for Models 55/56, see Figure 2.3 and Figure 2.4).
2 Pivot the bottom tray up and out to remove.
3 Ensure that the Warmette is level and that the jam nuts for the leveling feet are
locked in place before using the Warmette.
Figure 2.1
Figure 2.2
Model 48/49 anchor holes
Model 48/49 anchor hole placement
2-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Inspecting the Heater
Leveling feet
Anchor holes
9.92 in.
17.5 in.
1.45 in.
6 in.
6 in.
Center
line
25.97 in.
Figure 2.3
Figure 2.4
Model 55/56 anchor holes
Model 55/56 anchor hole placement
Inspecting the Heater
If a Warmette fails to heat, a heater might have loosened during shipping. The
Warmette has three 500W heaters per Plenum Assembly.
Required Items:
Heater (part no. 401572)
1/4-in. nut driver
To check the heater:
1 Press the power switch to the
2 Remove the uper white door seal, and then loosen — but do not remove — the
OFF
(O) position, and unplug the power cord.
screws inside the door, behind the door stop (see Figure 2.5).
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 2-3
Inspecting the Heater
Door stop
Screws (4)
Access panel
NOTE
#
Plenum
Plenum hold-down
spring
FRONT
Blower
Plenum hold-down
bridge
BACK
Terminal strip
Figure 2.5
Screw locations inside Warmette door
3 Pull out and remove the front panel (see Figure 2.6).
Figure 2.6
Removing the front panel
4 Unhook and remove the plenum hold-down spring and bridge (see Figure 2.7).
Push together the hold-down bridge and the spring, and then separate them.
Figure 2.7
Blower/Filter assembly
5 Separate the plenum from the casing.
6 Lift the plenum, and then unscrew the heater from its socket. Ensure that the
socket cap is tight, and then screw the heater firmly back into place.
7 Reinstall the plenum. Ensure that the plenum and case are seated firmly. Install
the plenum hold-down spring and bridge.
8 Reinstall the front panel and tighten the screws.
9 Test the Warmette for proper operation (see Testing the Warmette).
2-4 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Testing the Warmette
CAUTION
Test the Warmette after installing it or performing any maintenance or service
procedure to ensure that all systems are functioning properly.
To prepare the Warmette for testing:
Testing the Warmette
1 Plug in the power cord, then press the power switch to the
2 Set the temperature to 120°F.
3 Allow the Warmette to warm up for 5 minutes.
To test the Warmette:
Ensure that the
Ensure that the air blowing from the top of the Warmette is noticeably warm.
Listen for the blower to make sure it is running.
Check that the
HEATER ON
HEATER ON
on and off to maintain the set temperature.
Electrical Requirements
This product must be connected directly to a hospital-grade electrical outlet(s) rated for
minimum 20-ampere (A) service. Each heating cabinet is electrically separate. Two
separate electrical outlets are required for the Model 55/56.
The Warmette product line has several voltage/frequency options:
ON
(|) position.
lamp is illuminated.
lamp turns off within 60 minutes. It will then cycle
120V~, 60 Hz, 14A
220V~, 50 Hz, 8A
220V~, 60 Hz, 8A
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 2-5
Electrical Requirements
2-6 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Operation
NOTE
#
CAUTION
WARNING
CAUTION
This section describes how to operate the Olympic Warmette Models 48/49
and 55/56.
The Warmette Models 48 and 55 have clear doors on the front (see Figure 1.1 on page 1-3).
The Models 49 and 56 have an additional set of doors on the back side. The Models 48/49
and 55/56 are operated in the same manner.
Operating the Warmette
Read and be familiar with this manual before installing, operating, or servicing this
device. To ensure operator, technician, and patient safety, use only as specified in
this manual.
Connect this device directly to a hospital-grade electrical outlet.
Section
3
Do not place wet or very damp blankets inside the Warmette.
The inner metal surfaces of the warming chamber are hot whenever the warmer is on.
Not suitable for use in the presence of flammable anaesthetic mixtures with air,
oxygen, or nitrous oxide.
To operate the Warmette:
1 Plug in the power cord, then press the power switch to the
2 Place blankets or solution bottles into the warming chamber.
3 Set the temperature by pressing in the
appropriate temperature (see Figure 3.1, Control panel, on page 3-2).
Use caution to avoid burns when touching objects inside the warming chamber.
Do not exceed 120ºF for blankets.
Warm only external-use-only solutions. Never use the Warmette to warm solutions that
have low boiling points or contain flammable solvents.
Allow approximately eight (8) hours for solutions to reach selected temperature after
placing them in the Warmette.
Verify the appropriate solution temperature with a medical practitioner before use.
SET TEMP
knob while rotating to the
ON
(|) position.
Ensure the bottom shelf is in place so that the Warmette will operate properly.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 3-1
Operating the Warmette
NOTE
#
ºF
ºC
Controls and Signals
Temperature accuracy is ±10°F of selected temperature depending on the location in
the cabinet.
The following controls and indicators are used when operating the Warmette (see
Figure 3.1).
Mains power switch: Turns the power
ON
illuminates in the
SET TEMP
dial: Adjusts the internal temperature settings. To set the
temperature, press the
position to indicate the presence of power to the unit.
SET TEMP
knob in while turning to the appropriate
temperature.
HEATER ON
Figure 3.1
indicator: Illuminates when the internal heaters are operating.
Control panel
ON
( | ) and
OFF
(O). The switch
3-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Maintenance
WARNING
NOTE
#
Tray
Screws (4)
Tray shelves
NOTE
#
This section describes when and how to maintain the Olympic Warmette
Models 48/49 and 55/56, including cleaning procedures.
Electrical shock hazard when the enclosure is open. Always unplug the power cord
from the electrical outlet before cleaning or maintaining the Warmette.
The Warmette Models 48 and 55 have clear doors on the front (see Figure 1.1 on page 1-3).
The Models 49 and 56 have an additional set of doors on the back side. The Models 48/49
and 55/56 are maintained in the same manner.
Section
4
Removing the Trays
The upper trays are made of a plastic-coated metal mesh and can be removed for
cleaning. They are held in place by four thread-cutting screws (see
Required Items:
1/4-in. nutdriver
To remove the trays:
1 Access the screws from underneath the tray.
2 Pivot the solid-panel tray up and remove.
Figure 4.1
Removing the tray for cleaning
page 4-2).
Avoid cross-threading or over-tightening the thread-cutting screws. Doing so will strip the
screw holes.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 4-1
Quarterly Maintenance
CAUTION
CAUTION
Ensure that the bottom tray is correctly placed for operating the Warmette. Ensure that the
lint filter is not blocked.
Cleaning the Warmette
Regularly clean the Warmette to keep it in optimal functioning condition.
Required Items:
Mild soap and water solution
Liquid disinfectant
Towel
Do not allow liquid to enter the upper enclosure as liquids may cause electrical damage.
Never use alcohol to clean the doors as alcohol will damage the Plexiglas
Ensure inside surfaces are cool to touch before cleaning.
®
.
To clean the external surfaces:
Wipe the external surfaces moistened with a towel moistened with mild soap-
and-water solution or a liquid disinfectant.
To clean the internal surfaces:
1 Press the power switch to the
2 Wipe the interior using a towel moistened with liquid disinfectant.
3 Clean the Plexiglas
solution.
4 Plug in the power cord.
Quarterly Maintenance
Cleaning the Lint Filter
The Warmette has a lint filter located on the inside left wall of each warming
module under the bottom tray (see
three months, or more often if it becomes blocked.
OFF
(O) position, then unplug the power cord.
®
doors with a towel moistened with mild soap-and-water
Figure 4.2). Clean the filter at least once every
Required Items:
1/4-in. nutdriver
To clean the lint filter:
1 Press the power switch to the
2 Remove the bottom trays to access the lint filters.
4-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
OFF
(O) position, then unplug the power cord.
Annual Maintenance
Lint filters
Bottom tray
WARNING
3 Unscrew the three screws holding the filter, then remove the filter from the
cabinet (see Figure 4.2).
4 Clean the filter by holding it under a water faucet, then allow the filter to
thoroughly air dry.
5 Ensure the filter is dry, then place and secure with screws.
6 Plug in the power cord.
Figure 4.2
To prevent fire hazard, never operate the Warmette with the lint filter removed.
Location of the lint filters
Annual Maintenance
Annually inspect the following components and areas for dust and lint, and clean
as
required.
Cleaning the Inside of the Upper Cabinet
Required Items:
Vacuum cleaner
To clean the upper cabinet:
1 Access the cabinet (see Replacing the Blower on page 6-9).
2 Vacuum accumulated dust and debris.
3 Reassemble the Warmette.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 4-3
Annual Maintenance
CAUTION
Cleaning the Blower Housing and Blower Wheel
Required Items:
Vacuum cleaner
To clean the blower housing and blower wheel:
1 Access the blower housing (see Replacing the Blower on page 6-9 for
disassembly instructions).
2 Vacuum accumulated dust and debris.
3 Reassemble the Warmette.
Cleaning the Heater Plenum and Box
Required Items:
Vacuum cleaner
To clean the heater plenum and box:
1 Access the heater plenum (see Replacing the Heater on page 6-12 for
disassembly instructions).
2 Vacuum accumulated dust and debris.
3 Reassemble the Warmette.
Testing the Thermal Cut-out Function
To verify that the function of the thermal cut-out does not degrade over time,
perform the following procedure annually.
Required Items:
1/4-in. nut driver
Amp probe
6 x 6 in. metal plate
To test the thermal cut-out function:
1 Press the power switch to the
2 Loosen — but do not remove — the screws inside the Warmette door, behind the
door stop (see Figure 6.3, Screw locations inside Warmette door, on page 6-9).
OFF
(O) position, then unplug the power cord.
3 Pull out and remove the front panel (see Figure 6.4 on page 6-9).
Electrical shock hazard when the front panel is removed.
4 Plug in the power cord, then press the power switch to the
4-4 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
ON
(|) position.
Annual Maintenance
CAUTION
NOTE
#
Plenum gasket
Blower assembly
Plenum
Plenum hold-down spring
Acorn nuts and washers
FRONT
BACK
5 Rotate
SET TEMP
to high. Allow the warmer to heat for 20 minutes.
6 Connect an amp probe to the number 1 (hot) wire near the fuse holder. The
amperage reading should be approximately 14.0A for 120V~ or 8A for 220V~.
Interior parts of the cabinet and heating components such as the plenum may become hot.
7 Block the airflow from the blower into the plenum by placing the metal plate
between the blower and the plenum gasket (see Figure 4.3 on page 4-5).
You may need to loosen the acorn nuts to place the metal plate. The acorn nuts should be
reattached before the test to assure that air is not circulating to the heaters.
Figure 4.3
Blower assembly
8 In approximately 5–10 minutes the thermal cut-out will open and the amperage
reading should drop to approximately 1 amp, indicating that power to the
heaters has been interrupted.
9 Remove the metal plate.
10 Wait 20 minutes for the plenum to cool, and then press the reset button on the
thermal cut-out. The amperage reading should return to the previous value from
step 6 above.
11 If the thermal cut-out does not function as described above, replace it (see
Replacing the Thermal Cut-out on page 6-11).
12 Repeat steps 1–9 for the second thermal cut-out on Model 55/56 Warmettes.
13 Reinstall the front panel.
14 Test the Warmette for proper operation (see page 2-5).
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 4-5
Annual Maintenance
4-6 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Troubleshooting
Should you experience difficulty when operating your Olympic Warmette®, consult
the following table. For problems not listed in the table, contact Natus Medical (see
Technical Support on page 5-2).
Section
5
Table 5.1
Power switch is on
Heater is on
Blower runs
Heater lamp does not
illuminate
Power switch is on
Heater lamp illuminates
Heater is off
Blower does not run
Power switch is on
Heater lamp does not
illuminate
Heater is off
Blower does not run
Power switch is on
Heater lamp illuminates
Blower runs
Heater is off or on low
Troubleshooting chart
Problem Possible Cause Solution
Burned out heater
indicator lamp
Blocked airflow to the blower Free any obstruction from the fan.
Tripped thermal cut-out Reset the thermal cut-out switch.
Malfunctioning blower
Loose electrical connection
to the blower
No power Ensure that the power cord is fully seated in the
Blown circuit breaker Check the circuit breaker. Reset as needed.
Blown fuse Replace the fuse (see page 6-3).
Malfunctioning thermal
cut-out
Malfunctioning heater Replace the heater (see page 6-12).
Malfunctioning thermostat Replace the thermostat (see page 6-6).
Loose heater Check the socket for arcing. If it is okay (no arcing),
Loose or broken electrical
connections to the heater
Replace the heater indicator lamp (see page 6-6).
Replace the failed blower motor (see page 6-9).
Reset the thermal cut-out switch (see page 6-11).
Test all the electrical connections to the blower.
Repair as necessary.
Reset the thermal cut-out (see page 6-11).
power receptacle.
Contact Natus Medical (see page 5-2).
tighten the heater in the socket. If arcing is present,
replace the socket.
Check all electrical connections. Repair as necessary.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 5-1
Technical Support
Technical Support
For technical support, contact the Natus Medical Service Department at:
Toll-free: 1-866-940-7143 (US/Canada)
Phone: +1-206-767-3500 (worldwide)
Fax: +1-206-767-0573
Email: Seattle_technical_service@natus.com
5-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Service
CAUTION
WARNING
NOTE
#
Section
6
This section includes procedures for servicing the Olympic Warmette
Models 48/49 and 55/56.
Only qualified technicians should perform the service procedures.
Electrical shock hazard when the enclosure is open. Unplug the power cord from the
electrical outlet before servicing the Warmette.
In this section, the illustrations depict either the Model 48/49 or the Model 55/56.
Follow the appropriate instructions when servicing your Model 48, 49, 55, or 56.
The Warmette Models 48 and 55 have clear doors on the front (see Figure 1.1 on
page 1-3). The Models 49 and 56 have an additional set of doors on the back side. The
Models 48/49 and 55/56 are serviced in the same manner unless otherwise noted.
Servicing the Warmette
If your Warmette should become damaged, replacement parts are available. To
order a part, see
Ordering Information on page 7-1.
Repair Policy
Do not use malfunctioning equipment. To promote product reliability, a qualified
technician should perform the replacement and service procedures described in this
section. Before servicing your equipment, check your equipment warranty status,
check the normal repair procedures for your facility, and determine the appropriate
repair procedure to perform.
To ensure performance to factory specifications, Natus Medical recommends that
all replacement parts be those either manufactured or sold by Natus Medical. After
all repair actions and tests are complete, perform the pre-operative test procedure in
this manual (see
published specifications.
on page 2-5) to ensure proper operation and compliance with
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-1
Repair Procedures
WARNING
NOTE
#
CAUTION
NOTE
#
Repair Procedures
Electrical shock hazard when the enclosure is open. Unplug the power cord from the
electrical outlet before servicing the Warmette.
Temperature Measurement
Each Olympic Warmette is factory tested to ensure that it meets heating and safety
specifications.
The interior temperature of the device may vary significantly due to factors such as
placement, number of objects, and airflow around the objects. To ensure that the
Warmette is heating as specified, perform the following procedure.
Required Items:
An accurate thermometer capable of reading temperature ranges of 32–170°F
(0–77°C)
To verify the accuracy of any thermometer, you can measure the temperature of ice water
(32°F or 0°C).
A standard one-liter bottle (glass or plastic) filled with water or saline solution
To confirm the warming chamber temperature at 120°F (48.8°C):
1 Plug in the power cord, then press the power switch to the
2 Push in and rotate the thermostat knob to 120°F (48.8°C).
Before continuing, ensure that the inside surfaces are cool to the touch. Hot surfaces inside
the device cause a potential burn hazard.
Placing the bottle in an incorrect position will adversely affect the accuracy of the test.
3 Place the full one-liter plastic bottles on the top shelf.
4 Allow the Warmette to operate undisturbed for a minimum of eight (8) hours.
5 After the operating period, measure the temperature of the solution in the bottle.
ON
(|) position.
If the temperature measures between 110–130°F (43.3–54.4°C), the Warmette
is heating to within operating specifications.
6-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Replacing the Fuse
WARNING
If the heater lamp does not illuminate, the heater remains off, and the blower
does not run while the power is on, you may need to replace the fuse.
Required Items:
1/4-in. nut driver
Replacement fuse (part no. 200021)
To r em ov e th e f us e:
Repair Procedures
1 Press the power switch to the
2 Loosen — but do not remove — the screws inside the door, behind the door stop
OFF
(O) position, then unplug the power cord.
(see Figure 6.3 on page 6-9.
3 Pull out and remove the front panel at the top of the unit.
4 Remove the fuse(s) from the fuse holder(s).
For protection against fire hazard, replace a fuse only with the correct type and rating
of fuse (see Replacement parts list on page 7-1).
To install a new fuse:
1 Place the new fuse of the type and rating that is indicated on the fuse
replacement label into the fuse holder.
2 Slide the fuse holder into place.
3 Secure the front panel.
4 Test the Warmette for proper operation (see page 2-5).
Removing the Access Panel
To access some internal components for repair (e.g. thermometer), you will need to
remove the access panel. The access panel is located on the left inside wall of the
Warmette.
Required Items:
1/4-in. nutdriver
To remove the front panel:
1 Press the power switch to the
2 Remove the tray covering the access panel (see Figure 6.1).
3 Remove the screws holding the shelf supports that cover the access panel, then
OFF
(O) position, then unplug the power cord.
remove the shelf.
4 Remove the screws holding the access panel, then remove the access panel
(see Figure 6.1).
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-3
Repair Procedures
Thermostat
Knob
Mains power
switch
Heater indicator
lamp cover
Heater indicator
lamp socket
Access panel
Spacer
Thermostat label
Mounting screws
(x2)
Figure 6.1
Access panel assembly — exploded view
To reinstall the access panel:
1 Reinstall the access panel, then securely tighten the screws (see Figure 6.1).
2 Reinstall the shelf supports over the access panel, then securely tighten
the screws.
3 Place the tray on the shelf.
4 Test the Warmette for proper operation (see page 2-5).
Replacing the Mains Power Switch
Should you need to replace the mains power switch ( | / O ), perform the
following procedure.
Required Items:
Mains power switch (part no. 200001)
3/64-in. Allen wrench
1/4-in. nutdriver
To remove the mains power switch:
1 Press the power switch to the
2 Remove the access panel (see Removing the Access Panel on page 6-3).
OFF
(O) position, then unplug the power cord.
3 Disconnect the mains power switch spade connectors (see Figure 6.2).
6-4 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Repair Procedures
Temperature control knob
Heater indicator lamp and cover
Thermostat
Capillary tube
Butt splice connectors
Mains power switch
FRONT
BACK
Lamp housing
Spade connectors
4 Push the power switch forward through the front of the Warmette cabinet (see
Figure 6.2).
Figure 6.2
Access panel assembly — side view
To install a new mains power switch:
1 Insert the new switch through the opening.
2 Press the switch into the opening until it snaps into place.
3 Connect the spade connectors (see Drawings and Schematics on page A-1).
4 Replace the access panel, shelf supports, and tray.
5 Test the Warmette for proper operation (see page 2-5).
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-5
Repair Procedures
Replacing the Heater Indicator Lamp
If the heater indicator lamp is burned out, perform the following procedure to
replace it.
Required Items:
Heater indicator lamp (part no. 200002)
1/4-in. nutdriver
To remove the heater indicator lamp:
1 Press the power switch to the
2 Remove the access panel (see Removing the Access Panel on page 6-3).
3 Remove the two butt splice connectors (see Figure 6.2 on page 6-5).
4 Slide the lamp housing down until the lamp cover snaps out of the lamp housing
OFF
(O) position, then unplug the power cord.
(see Figure 6.2 on page 6-5).
5 Remove the lamp housing.
To install the new heater indicator lamp:
1 To put a new lamp housing in place, press the lamp cover from the front of the
Warmette (see Figure 6.2 on page 6-5).
2 While continuing to press the lamp cover, put the new housing under the lamp
cover on the back of the control. Pull up on the lamp housing until it snaps
into place.
3 Reconnect with the two 18–22 AWG butt splice connectors at the end of the
lamp housing wires.
4 Reinstall the access panel, the shelf supports, and the tray.
5 Test the Warmette for proper operation (see on page 2-5).
Replacing the Thermostat
If the heat is inaccurate to the setting, replace the thermostat.
Required Items:
Thermostat (part no. 400726)
Thermostat label (part no. 301410)
3/64-in. Allen wrench
Pencil
To replace the thermostat:
1 Press the power switch to the
2 Remove the access panel (see Removing the Access Panel on page 6-3).
3 Using the Allen wrench, loosen the two knob set screws.
4 Pull off the temperature control knob.
6-6 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
OFF
(O) position, then unplug the power cord.
Repair Procedures
NOTE
#
NOTE
#
NOTE
#
5 Remove the indicator lamp cap and the mains power switch (see Replacing the
Mains Power Switch on page 6-4).
6 Remove and discard the thermostat label.
7 Remove the two mounting screws on the front of the thermostat (see Figure 6.1
on page 6-4).
8 Remove the temperature probe bulb from the plenum:
a Remove the front panel (see Replacing the Blower on page 6-9).
b Unhook and remove the plenum hold-down spring and bridge (see
Figure 6.5 on page 6-10). Separate the plenum from the casing.
c The temperature probe bulb is located inside the plenum. It is held by nylon
tie-wrap to the grille in the bottom of the plenum. With a pencil, trace
around the perimeter of the bulb. Cut the nylon tie and feed the temperature
probe bulb through the hole in back of the plenum and out through the front
panel opening.
The correct probe bulb position is important to the proper temperature regulation.
d Pull the thermostat and probe out of the Warmette cabinet (see Figure 6.1 on
page 6-4).
Avoid kinking or flexing the capillary (small copper) tube of the new controller, especially
where it joins the thermostat.
e Disconnect the wires from the top of the thermostat, then remove the old
thermostat (see Figure 6.2 on page 6-5).
To reassemble the Warmette:
1 Feed the temperature probe through the front panel opening, and through the
hole in the back of the plenum. Secure the probe bulb to the grille in the same
location as the old bulb using a nylon tie wrap.
2 Connect the thermostat wires to the new thermostat.
3 Hold the assembly spacer in position and insert the shaft of the new thermostat
into the opening from the back of the panel (see Figure 6.2 on page 6-5)
Avoid dropping the spacer inside the wall cavity of the Warmette cabinet during removal or
reassembly. If the spacer falls inside the wall, simply remove the lint filters to retrieve it (see
Figure 4.2 on page 4-3).
4 Install and tighten the two mounting screws (see Figure 6.1 on page 6-4).
5 Remove any label adhesive residue from the device. Discard the old label.
6 Remove and discard the backing from the new thermostat label, then press the
new label gently into place.
7 Ensure that the thermostat shaft is rotated fully counterclockwise and then
replace the control knob, making sure it is aligned with the 90° mark.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-7
Repair Procedures
8 Turn the control knob fully clockwise and loosen the two set screws. Rotate the
knob slightly counterclockwise by half the gap between full rotation and the
150°F mark and then retighten the set screws.
9 Replace the mains power switch (see page 6-4).
10 Replace the access panel, shelf supports, and tray.
11 Test the Warmette for proper operation (see on page 2-5).
Replacing the Thermostat Label
Replace the thermostat label if it was damaged while replacing one of the access
panel components.
Required Items:
Thermostat label (part no. 301410)
To remove the old label:
1 Press the power switch to the
2 Remove the thermostat knob (see step 3 and step 4 on page 6-6).
3 Remove the heater indicator lamp cover (see Figure 6.1 on page 6-4).
4 Remove the mains power switch (see page 6-4).
5 Peel the old label off the thermostat. Discard the old label.
6 Remove any label adhesive residue from the device.
OFF
(O) position, then unplug the power cord.
To replace the new label:
1 Ensure that the surface is clean and dry.
2 Remove and discard the backing from the new label, then press the new label
gently into place.
3 Install the mains power switch (see page 6-5).
4 Install the thermostat knob.
5 Test the Warmette for proper operation (see page 2-5).
6-8 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Replacing the Blower
Door stop
Screws (4)
Access panel
If air does not circulate or if the Warmette temperature is inconsistent throughout
the device, the blower may need to be replaced.
Required Items:
1/4-in. nutdriver
7/16-in. nutdriver
To replace the blower:
Repair Procedures
1 Press the power switch to the
OFF
(O) position, then unplug the power cord.
2 Loosen — but do not remove — screws inside the Warmette door, behind the
door stop (see Figure 6.3).
Figure 6.3
3 Pull out and remove the front panel (see Figure 6.4).
Figure 6.4
Screw locations inside Warmette door
Removing the front panel
4 Remove the blower:
a Remove and set aside the four acorn nuts and washers securing the bottom
of the blower; the nuts are located inside the cabinet under the blower.
b Lift the blower assembly and position it to allow access to the ground wire
screw on the motor side of the blower housing. (see Figure 6.5).
c Remove and set aside the ground screw and star lock-washer.
d Disconnect the blower assembly electrical connections at the terminal strip.
e Remove the four bolts securing the blower to the bracket.
f Remove the blower.
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-9
Repair Procedures
Plenum
Plenum hold-down
spring
FRONT
Blower
Plenum hold-down
bridge
BACK
Terminal strip
NOTE
#
To remove the wire ties and old blower:
Figure 6.5
Since it is easy to clean the Warmette while the blower is removed, perform the annual
maintenance and inspection at this time. The annual maintenance includes cleaning the
heater plenum and box, blower housing, and fan cage. See Annual Maintenance on
page 4-3.
Blower/Filter assembly
1 Installing the new blower:
a Assemble the new blower to the bracket.
b Lower the blower and mounting bracket down and toward the plenum.
c Reattach the four acorn nuts and washers to secure the bottom of the blower.
d Connect the blower assembly electrical connections at the terminal strip.
2 Attach the front panel.
3 Tighten the screws inside the Warmette door.
4 Plug in the power cord.
5 Test the Warmette for proper operation (see on page 2-5).
6-10 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Replacing the Thermal Cut-out
CAUTION
If the thermal cut-out does not function properly (see Testing the Thermal Cut-out
Function on page 4-4), replace the component by performing this procedure.
Required Items:
Thermal cut-out (part no. 200051)
1/4-in. nutdriver
To remove the thermal cut-out:
Repair Procedures
1 Press the power switch to the
2 Remove the upper white door seal and loosen — but do not remove — the screws
OFF
(O) position, then unplug the power cord.
inside the door, behind the door stop (see Removing the Access Panel on
page 6-3).
3 Pull out and remove the front panel (see Figure 6.4 on page 6-9).
Electrical shock hazard when the front panel is removed.
4 Unhook, remove, and set aside the plenum hold-down springs. Next, disconnect
the thermal cut-out wires (see Figure 6.5 on page 6-10).
5 Separate the plenum from the filter case.
6 Locate and remove the screws and kep nuts attaching the failed thermal cut-out
to the plenum assembly. Set aside the screws and kep nuts.
To place the new thermal cut-out:
1 Place the new thermal cut-out, then attach with screws and kep nuts.
2 Reinstall the plenum, taking care to fully seat the plenum and filter. Install the
plenum hold-down springs and reconnect the thermal cut-out wires.
3 Verify the correct function of the thermal cut-out (see Testing the Thermal
Cut-out Function on page 4-4).
4 Reinstall the front panel.
5 Test the Warmette for proper operation (see on page 2-5).
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 6-11
Repair Procedures
Replacing the Heater
The Warmette has three heaters on each side. If the Warmette does not heat,
determine if the heater has failed (e.g. check the current to the unit. If it is much less
than 14A (120V~) or 8A (220V~) and all connections appear functional, a failed
heater is suspect. Remove the heaters and check with an ohm meter; replace the
heater if necessary.
Required Items:
Heater (part no. 401572)
1/4-in. nutdriver
To remove the heater:
1 Press the power switch to the
2 Loosen — but do not remove — the screws inside the door, behind the door stop
OFF
(O) position, then unplug the power cord.
(see Figure 6.3 on page 6-9).
3 Pull out and remove the front panel (see Removing the Access Panel on
page 6-3).
4 Unhook and remove the plenum hold-down spring and bridge (see Figure 6.5
on page 6-10).
5 Separate the plenum from the casing.
6 Lift the plenum, then unscrew the heater from its socket.
7 Remove the old heater from the Warmette.
To place the new heater:
1 Place the new heater into the Warmette, then securely tighten the screws.
2 Reinstall the plenum. Ensure that the plenum and case are seated firmly. Install
the plenum hold-down spring and bridge.
3 Reinstall the front panel and tighten the screws.
4 Test the Warmette for proper operation (see page 2-5).
6-12 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Replacement Parts
NOTE
#
Use only Natus Medical-approved parts with the Warmette.
Ordering Information
To order Warmette parts and accessories, contact:
Natus Medical Incorporated
Customer Service Department
Toll-free: 1-800-303-0306
Phone: +1-650-802-0400
Fax: +1-650-802-6620
Email: customer_service@natus.com
Section
7
When ordering parts, please provide the item number to the customer service
representative.
Table 7.1
Blower assembly kit 200036-k507
Fuses (25A 250V FLM time delay) 200021
Heater indicator lamp 200002
Heaters, 500 Watt 401572
Power switch 200001
Thermal cut-out 200051
Thermostat assembly 400726
Thermostat label 301410
Catch, door 100317-503
Replacement parts list
Item Name / Description Item Number
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 7-1
Ordering Information
7-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Specifications
Section
8
Intended Use
The Warmettes are intended for warming fluids,
blankets or other linens in a hospital setting.
Dimensions — Model 48/49
Dimensions
Height: 84.5 in. 214.6 cm
Width: 26.0 in. 66.0 cm
Depth: 21.0 in. 53.3 cm
Product Weight
135 lb 61 kg
Shipping Weight
260 lb 118 kg
Warming Capacity
13.5 cu. ft. 0.38 cu. m
Dimensions — Model 55/56
Dimensions
Height: 84.5 in. 214.6 cm
Width: 51.8 in. 131.6 cm
Depth: 21.0 in. 53.3 cm
Product Weight
275 lb 125 kg
Shipping Weight
550 lb 280 kg
Warming Capacity
27.0 cu. ft. 0.76 cu. m
Electrical
Power Requirements (per module)
Voltage: 120–220V~, single phase
Consumption:
14.0A (120V~)
8.0A (220V~)
Frequency (current): 50 ±1 Hz or 60 ±1 Hz
Ground
Does not exceed 0.13 V
Fuses
Two internal 25A 250V FLM time delay fuses
Environmental
Temperature
Operating: 50–104°F 10–40°C
Shipping: -40–158°F -40–70°C
Storage: -40–158°F -40–70°C
Relative Humidity (RH)
Operating: 10–95% relative humidity, non-
condensing
Non-operating: 10–100% relative humidity,
condensing
Operating Altitude
Up to 10000 ft Up to 3000 m
Pressure
0.5–1.0 atm 500–1060 hPA
Controls
Mains power switch changes device state mains
power on/off ( | / O )
SET TEMP
control for the internal temperature of the
Warmette
temperature dial is a thermostat
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 8-1
External Connections
Hospital-grade power cord (120V units)
Product
Item Catalog No.
Warmette Model 48 . . . . . . . . . . . . . . . . . . . 56948
Warmette Model 49 (with rear door) . . . . . . 56949
Warmette Model 55 . . . . . . . . . . . . . . . . . . . 56955
Warmette Model 56 (with rear doors) . . . . . 56956
Regulatory, Electrical Safety,
Classifications
and
Regulatory Status
CAN/CSA 1010.1B-97 (120V~ only)
CAN/CSA 1010.2.010-94 (120V~ only)
UL 61010A-2-10
UL 61010B-1
Installation/overvoltage category II
Ordinary Equipment IPXØ
Pollution degree 2
Indoor use only
Service
Service can be performed by hospital technicians.
See
Ordering Information on page 7-1 for more
information.
Warranty
One-year warranty on parts.
Product Disposal
Disposal of the Warmette does not require any
special precautions. Follow local waste disposal
regulations.
Electromagnetic Interference
The Warmette is neither a source of nor affected by
electromagnetic interference
(EMI).
Olympic Warmette Models 48/49 and 55/56 Instruction Manual 8-2
Drawings and Schematics
Appendix
Figure 8.1
Model 48/49/55/56, Olympic Warmette Wiring Diagram, Drawing No. 700192 Rev. C
A
Olympic Warmette Models 48/49 and 55/56 Instruction Manual A-1
Figure 8.2
Model 48/49/55/56, Olympic Warmette Schematic, Drawing No. 700193
A-2 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
Figure 8.3
Model 48/49/55/56, Olympic Warmette Drawing No. 700194
Olympic Warmette Models 48/49 and 55/56 Instruction Manual A-3
Figure 8.4
Model 48/49/55/56 Olympic Warmette Drawing No. 700195
A-4 Olympic Warmette Models 48/49 and 55/56 Instruction Manual
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