QSALF1

Overview

The Hobart QSALF1 is a Q Series over/under refrigeration system from Hobart Corporation of Troy, Ohio — a refrigerator section and a freezer section sharing one over/under cabinet, with each section documented as its own refrigeration circuit. The core reference for the line is Hobart's replacement parts catalog, Form 43021 (August 2001), titled Q Series Over/Under Refrigeration System Replacement Parts. That catalog covers the family that includes the QSALF1 and the closely related QSLF1; Hobart's own Q1 parts list groups the two as (QSALF1 & QSLF1), and door hardware listings name the same hinge kits for both models.

Because the primary documentation is a parts catalog, it is unusually specific about what sits inside the cabinet: separate condensing units for the refrigerator and freezer, complete condensing unit assemblies, evaporator assemblies with thermostatic expansion valves, independent temperature controls, a defrost timer, and heated drain and condensate pans. It also records the refrigerant history of the line — ML-41603 through ML-41612 units ran on R12, while later production moved to R134a (previous ML-111382, ML-111383, ML-111384, ML-111386, ML-111387 and ML-111388; current ML-111570, ML-111571, ML-111572 and ML-111573).

For a unit of this generation, that depth of documentation is what separates a repair from a replacement: nearly every component carries a Hobart part number, from the 00-239084 filter-drier down to the BL-008-19 interior bulb. Door hardware is equally well covered — the 00-239157 cam-lift, spring-assisted hinge kit lists the QSALF1 by name in its fitment.

Key Features

• Two sections, two circuits. Separate condensing units for the refrigerator (00-434293-00001) and freezer (00-434293-00002), also documented as complete assemblies — 00-264853-00001 (refrigerator) and 00-264853-00002 (freezer).
• Independent temperature controls for each section: 00-267275 (refrigerator) and 00-267274 (freezer), each fed by its own thermostatic expansion valve (00-249863-00071 refrigerator / 00-249863-00053 freezer).
• Timer-controlled defrost (00-266721-00001) with a dedicated defrost evaporator heater on the freezer coil (00-434365) and a heater under the freezer drain pan (00-266082-00001).
• Heated condensate pan — heater 00-434514, pan 00-430052 and cover 00-434484 — to handle defrost water from both sections.
• 115 V operation, with a 15 A cord documented on the refrigerator condensing unit assembly and a 20 A cord on the freezer assembly.
• Spring-assisted cam-lift doors: hinge kit 00-239157 (1.125 x 5 x 1 in.), the 00-265839 spring-assisted hinge, and a matching door hinge stop.
• Mounting options: four leg assemblies or a set of four 5-inch casters, two of them with brakes.
• Interior lighting on two lamp holders running 120 V, 40 W bulbs.

Specifications

All figures and part numbers below come from Hobart Form 43021 (August 2001) and the door-hardware fitment listings for this model family.

Identity and documentation

• Manufacturer: Hobart Corporation, 701 S. Ridge Avenue, Troy, Ohio 45374-0001
• Product line: Q Series Over/Under Refrigeration System
• Model: QSALF1 (sibling model in the same documentation: QSLF1)
• Parts catalog: Form 43021, August 2001, printed in U.S.A.
• ML numbers, R12 refrigerant: ML-41603, ML-41604, ML-41605, ML-41610, ML-41611, ML-41612
• ML numbers, R134a (previous): ML-111382, ML-111383, ML-111384, ML-111386, ML-111387, ML-111388
• ML numbers, R134a (current): ML-111570, ML-111571, ML-111572, ML-111573

Electrical

• Supply voltage: 115 V
• Cord, refrigerator circuit: 15 A, 115 V (00-239000)
• Power cord, freezer circuit: 20 A, 115 V (00-434499)
• Evaporator fan motor: C-frame, 120 V (00-430061-00002)
• Fan assembly: 115 V (00-239514)
• Interior bulbs: 120 V, 40 W (BL-008-19), quantity 2

Refrigeration system

• Condensing unit, refrigerator: 00-434293-00001
• Condensing unit, freezer: 00-434293-00002
• QLF1 condensing unit refrigerator assembly: 00-264853-00001 (includes the condensing units, 15 A cord, filter-drier, clamp, defrost timer and mounting hardware)
• QLF1 condensing unit freezer assembly: 00-264853-00002 (includes the 20 A power cord)
• Filter-drier: 00-239084, with clamp 00-263294
• Evaporator assembly, freezer: 00-239854 (includes items 1 through 7)
• Evaporator assembly, refrigerator: 00-239855 (includes items 4, 5, 6 and 8)
• Evaporator coil: 00-434362
• Thermostatic expansion valve: 00-249863-00071 (refrigerator), 00-249863-00053 (freezer)
• Accumulator, freezer: 00-262708
• Evaporator housing base: 00-434413, quantity 2; evaporator housing: 00-239849-00001
• Fan motor bracket: 00-434469, quantity 2; plastic fan blade: 00-430060, quantity 2
• Rubber tube: 00-547662 (as required); extension tube, 14 lg.: 00-239247

Controls, defrost and drainage

• Temperature control, refrigerator: 00-267275 (also listed as control assembly, refrigerator unit)
• Temperature control, freezer: 00-267274 (also listed as control assembly, freezer unit)
• Defrost timer: 00-266721-00001
• Defrost evaporator heater, freezer: 00-434365
• Drain pan heater, freezer unit: 00-266082-00001
• Actuator switch bracket: 00-748900
• Drain/orifice pan: 00-434431, quantity 2
• Drain pan assembly: 00-266103-00001 (refrigerator unit), 00-266103-00003 (freezer unit)
• Thermostat drip shield: 00-434429, quantity 2

Cabinet, mobility and lighting

• Condensate pan: 00-430052; heater: 00-434514; cover: 00-434484
• Wiring harness: 00-434148 (refrigerator), 00-434149 (freezer)
• Casters: 5 in., without brake — 00-281522-00001, quantity 2; with brake — 00-266718-00001, quantity 2
• Leg assemblies: quantity 4
• Lamp holder: 00-434433, quantity 2

Door hardware (documented fitment)

• Hinge kit 00-239157: cam lift and spring assisted mechanism; 1.125 x 5 x 1 in. (W x D x H); fits the QSALF1, QSAUF1, QSLF1 and QSUF1
• AllPoints 8009317 hinge kit: cam lift and spring assisted, listed as a complete direct-replacement kit with all hinge components needed for installation
• Door hinge stop: Allpoints 8012580, listed for the same four models
• Hinge 00-265839: 1.13 in. spring-assisted hinge, catalogued across the Q Series door hardware line

Fasteners and small hardware (as catalogued)

• Machine screw 1/4-20 x 3/4 hex washer head: SC-109-44, quantity 4; washer WS-029-46, quantity 4
• Self-tapping screw 8 x 5/8 Phillips truss head, Type A: SD-033-33
• Self-tapping screw 10-24 x 1/2 Phillips flat head, Type F (SST): SD-029-06, quantity 8
• Machine screw 10-32 x 5/8 Phillips truss head (SST): SC-117-73, quantity 4
• Knurled screw: 00-266357-00003, quantity 4

Installation and Requirements

Form 43021 is a parts catalog, so it documents the electrical and mounting hardware rather than placement instructions. What it does establish for the QSALF1:

• Power: 115 V. The refrigerator condensing unit assembly (00-264853-00001) includes a 15 A, 115 V cord (00-239000); the freezer assembly (00-264853-00002) includes a 20 A, 115 V power cord (00-434499). Match the supplying circuit to the cord fitted on your unit.
• Mounting: the cabinet is documented with either four leg assemblies or a caster set — two 5 in. casters with brakes (00-266718-00001) and two without (00-281522-00001).
• Condensate: a dedicated condensate pan with its own heater (00-434514), pan (00-430052) and cover (00-434484) is part of the documented build and should be kept together as a complete assembly.

The catalog does not publish clearance, ventilation or weight figures for this model, and we do not estimate them; use the installation documentation for your specific ML number for placement data.

Operation

Defrost is timer-driven (00-266721-00001). On the freezer side, the defrost evaporator heater (00-434365) clears frost from the coil and a heater under the freezer drain pan (00-266082-00001) keeps melt water moving. Both sections drain through drain/orifice pans (00-434431, two per unit) into the drain pan assemblies (00-266103-00001 refrigerator, 00-266103-00003 freezer), and the heated condensate pan completes the path. Interior lighting runs from two 40 W, 120 V bulbs in dedicated lamp holders.

Cleaning and Maintenance

The August 2001 catalog is a parts document, so it contains no cleaning procedures or service intervals, and none are invented here. What it does show is which components Hobart documented as individually replaceable over the life of the cabinet:

• The filter-drier (00-239084) and its mounting clamp (00-263294), listed as line items on the condensing unit.
• Drain pan assemblies for each section (00-266103-00001 and 00-266103-00003) plus the drain/orifice pans (00-434431) beneath them.
• The condensate pan, its heater and its cover as three separate parts.
• Door hardware: the 00-239157 hinge kit is catalogued as a complete set with all components needed for installation, and the door hinge stop carries its own part number.
• Section wiring harnesses (00-434148 refrigerator, 00-434149 freezer), the defrost timer and both temperature controls.
• Individual casters and leg assemblies.

For cleaning agents and intervals, work from Hobart's service literature for your specific ML number rather than generic guidance.

Applications

An over/under refrigerator/freezer earns its footprint in kitchens that need chilled and frozen storage side by side but cannot spare the floor space of two full-height cabinets. The dual-temperature layout keeps everyday refrigerated stock on one level and frozen goods on the other, so a single unit can cover prep-line holding, back-of-house storage and frozen inventory at once. The caster option — two braked casters among the four — suits operations that pull the unit out for floor work or rework their line layout. Because the system runs on 115 V power with documented 15 A (refrigerator) and 20 A (freezer) cords, it fits the electrical reality of most commercial kitchens. For operators still running these Q Series cabinets, the practical application today is keeping them in service: the catalog supports rebuilding a section — condensing unit, evaporator, controls and hardware — rather than replacing the unit.