Williams Medi+ products are designed to meet the exacting needs of medical and laboratory applications.
From delicate, temperature-sensitive laboratory uses to high-value pharmaceuticals, we’ve put all our expertise into developing fridges and freezers that offer the most reliable, precise, stable and robust storage conditions.
The Williams Medi+ range is available across a range of 17 models, from compact undercounter units to upright cabinets, including slimline versions. All models are available with solid or glass doors.
This diversity means Williams can offer products to suit applications for the storage of drugs, medicines and vaccines in a variety of sites including hospitals, laboratories, nursing and care homes, pharmacies, doctors’ and dentists’ surgeries, vets and other clinical settings.
With 17 models operators can select a fridge or freezer that best suits both the application and the available space
The stainless steel exterior with aluminium interior provide a robust, durable and hygienic cabinet with easy to clean surfaces
From delicate, temperature-sensitive laboratory uses to high-value pharmaceuticals, the Medi+ range offers reliable, stable and robust storage conditions
Automatically monitors the fan, defrost and compressor ensuring that the critical storage temperature is never compromised
Internal LED lighting
provides bright, low heat lighting whilst delivering great energy savings and clear visibility
Designed and engineered
to operate in busy ambient temperatures of up to 43°C
Natural hydrocarbon refrigerant
with low GWP / zero ODP delivers superior thermal efficiency
Magnetic balloon door gaskets
with 100% tight seal, preventing heat ingress and enhancing energy efficiency
Medi+ Controller
features a Modbus network data connection for comprehensive monitoring of temperatures, alarms and defrost via a 3rd party supervisory system
Precision injected, high density
polyurethane insulation with low GWP (Global Warming Potential) and zero ODP (Ozone Depletion Potential)
Heavy duty, non-marking
swivel castors with roller bearings and brakes improve both mobility and stability and make it easy to move for cleaning
Choice of options
include glass or solid doors and a choice of white nylon coated wire shelving as standard or optional perforated steel shelves
Defrost water is vaporised
using recycled heat from compressor
Removable racking system
with anti-tilt trayslides & nylon coated shelving (except WMP135)
Air cooled
condensing unit
High performance
helium leak testing
We have a wealth of experience in the storage of high value pharmaceuticals, having developed a range of coldrooms specifically designed for this application. The NHS and other public sector organisations have access to the range via the ESPO Contract 98 and M98 Frameworks.
When performance is everything you can trust Williams to deliver.
We’ve supplied equipment to leading medical and research
facilities and hospitals around the world.
From exacting temperature controls to bespoke racking and even
vibration free test rooms – we’ve supplied them all.
Dimensions (mm) |
External |
Internal |
Width |
606 |
536 |
Depth |
577 |
434 |
Height |
805 |
606 |
Door Opening |
- |
606 |
Capacity cu.ft/ltrs |
- |
4.8/135 |
Technical Data |
||||||
Model |
Temperature (°C) |
Climate Class |
Power Supply |
Fuse (Amps) |
Defrost |
Noise level (dBA) |
HWMP135 |
+2 / +8°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
55 |
LWMP135 |
-18 / -22°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
44 |
Electrical/Energy Data |
||||
Model |
Refrigerant |
Start Up (Amps) |
Running (Amps) |
Heat Rejection |
HWMP135 |
R600a |
3.7 |
0.53 |
194 * |
LWMP135 |
R600a |
3.7 |
0.53 |
194 * |
Dimensions (mm) |
External |
Internal |
Width |
595 |
445 |
Depth |
684 |
477 |
Height |
1956 |
1315 |
Door Opening |
- |
445 |
Capacity cu.ft/ltrs |
- |
11.8/335 |
Technical Data |
||||||
Model |
Temperature (°C) |
Climate Class |
Power Supply |
Fuse (Amps) |
Defrost |
Noise level (dBA) |
HWMP335 |
+2 / +8°C |
Class 5 |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
63 |
LWMP335 |
-18 / -22°C |
Class 5 |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
61 |
Electrical/Energy Data |
||||
Model |
Refrigerant |
Start Up (Amps) |
Running (Amps) |
Heat Rejection |
HWMP335 |
R290 |
9.5 |
1.7 |
484 ** |
LWMP335 |
R290 |
9.5 |
2.47 |
623 * |
Dimensions (mm) |
External |
Internal |
Width |
695 |
545 |
Depth |
684 |
477 |
Height |
1956 |
1315 |
Door Opening |
- |
545 |
Capacity cu.ft/ltrs |
- |
14.5/410 |
Technical Data |
||||||
Model |
Temperature (°C) |
Climate Class |
Power Supply |
Fuse (Amps) |
Defrost |
Noise level (dBA) |
HWMP410 |
+2 / +8°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
63 |
Electrical/Energy Data |
||||
Model |
Refrigerant |
Start Up (Amps) |
Running (Amps) |
Heat Rejection |
HWMP410 |
R290 |
9.5 |
1.75 |
484 * |
Dimensions (mm) |
External |
Internal |
Width |
727 |
567 |
Depth |
837 |
660 |
Height |
1940 |
1332 |
Door Opening |
- |
567 |
Capacity cu.ft/ltrs |
- |
18.5/523 |
Technical Data |
||||||
Model |
Temperature (°C) |
Climate Class |
Power Supply |
Fuse (Amps) |
Defrost |
Noise level (dBA) |
HWMP523 |
+2 / +8°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Off Electric |
63 |
LWMP523 |
-18 / -22°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Electric |
61 |
Electrical/Energy Data |
||||
Model |
Refrigerant |
Start Up (Amps) |
Running (Amps) |
Heat Rejection |
HWMP523 |
R290 |
9.5 |
1.67 |
484 ** |
LWMP523 |
R290 |
9.5 |
2.59 |
623 * |
Dimensions (mm) |
External |
Internal |
Width |
727 |
567 |
Depth |
824 |
665 |
Height |
1960 |
1411 |
Door Opening |
- |
567 |
Capacity cu.ft/ltrs |
- |
21.9/620 |
Technical Data |
||||||
Model |
Temperature (°C) |
Climate Class |
Power Supply |
Fuse (Amps) |
Defrost |
Noise level (dBA) |
HWMP620 |
+2 / +8°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
63 |
LWMP620 |
-18 / -22°C |
Class 4 (30°C) |
230V/50Hz/1Ph |
13 |
Automatic Electric |
63 |
Electrical/Energy Data |
||||
Model |
Refrigerant |
Start Up (Amps) |
Running (Amps) |
Heat Rejection |
HWMP620 |
R290 |
9.5 |
1.64 |
484 * |
LWMP620 |
R290 |
14.2 |
3.63 |
623 * |
Dimensions (mm) |
External |
Internal |
Width |
1400 |
1240 |
Depth |
824 |
665 |
Height |
1960 |
1411 |
Door Opening |
- |
567 |
Capacity cu.ft/ltrs |
- |
45.7/1295 |
Technical Data |
||||||
Model |
Temperature (°C) |
Climate Class |
Power Supply |
Fuse (Amps) |
Defrost |
Noise level (dBA) |
HWMP1295 |
+2 / +8°C |
Class 4 |
230V/50Hz/1Ph |
13 |
Automatic Off Cycle |
65 |
LWMP1295 |
-18 / -22°C |
Class 4 |
230V/50Hz/1Ph |
13 |
Automatic Electric |
70 |
Electrical/Energy Data |
||||
Model |
Refrigerant |
Start Up (Amps) |
Running (Amps) |
Heat Rejection |
HWMP1295 |
R290 |
13.5 |
1.42 |
768 * |
LWMP1295 |
R290 |
13.5 |
3.63 |
1068 * |
✓ Standard ‒ Not available ⚬ Option |
WMP135 |
WMP335 |
WMP410 |
WMP523 |
WMP620 |
WMP1295 |
Spark free interior |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Stainless steel exterior and aluminium interior |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Stainless steel exterior and interior |
‒ |
‒ |
‒ |
✓ |
‒ |
‒ |
Barrel locked doors |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Magnetic balloon door gaskets with 100% tight seal |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
White nylon coating wire shelves * |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
80mm polyurethane insulation with low GWP and zero ODP |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Pilaster racking with removable shelving clips * |
✓ |
‒ |
‒ |
‒ |
‒ |
‒ |
Front vented refrigeration system |
✓ |
‒ |
‒ |
‒ |
‒ |
‒ |
Engineered to operate efficiently up to 32°C ambient |
✓ |
‒ |
‒ |
‒ |
‒ |
‒ |
Engineered to operate efficiently up to 43°C ambient |
‒ |
✓ |
✓ |
✓ |
✓ |
✓ |
Air cooled condensing unit |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Defrost water is vaporised using recycled heat from compressor * |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
High performance helium leak testing |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Full length integral ‘easy grab’ door handle |
‒ |
✓ |
✓ |
✓ |
✓ |
✓ |
Self closing doors |
‒ |
✓ |
✓ |
✓ |
✓ |
✓ |
Anti-tilt trayslides (shelf support) |
‒ |
✓ |
✓ |
✓ |
✓ |
✓ |
Removable racking system |
‒ |
✓ |
✓ |
✓ |
✓ |
✓ |
Heavy duty, non-marking, swivel castors with brakes |
‒ |
✓ |
✓ |
✓ |
✓ |
✓ |
Internal LED lighting (H models only) |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Full range of RAL colours |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
Glass door and internal lighting (H models only) |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
Punched stainless steel shelves * |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
Additional shelving ** |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
Left hand door hang |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
⚬ |
* Except LWMP135 / ** Except WMP135 |
✓ Standard ⚬ Option |
Medi+ Controller |
||
Clear digital display |
✓ |
||
Audio and visual hi/lo temp alarm |
✓ |
||
Audio and visual door open alarm |
✓ |
||
Maximum and minimum temperature memory |
✓ |
||
Auto defrost |
✓ |
||
Air and evaporator probe |
✓ |
||
Lockable keypad |
✓ |
||
Condenser cleaning warning to ensure optimum performance is maintained |
✓ |
||
Volt free alarm contacts for connecting to supervisory or BMS system |
✓ |
||
Modbus network data connection for comprehensive monitoring of temperatures, alarms and defrost via 3rd party supervisory system |
⚬ |
||
Precise temperature control using decimal point operation |
✓ |
We develop specialist commercial refrigeration for a variety of industries. Based in King’s Lynn, Norfolk, we operate a highly successful new product development programme, further cementing our position as a global market leader.