Lang manufacturing company 6500 merrill creek parkway everett, wa 98203 phone: 1-800-224-5264 fax: 1-425-349-2733 www.Langworld.Com ©copyright 2002 service manual for the lang models: rf21s-a, rf21s-c, rf21s-d, rf21s-g, rf21s-h.
1 table of contents chapter page 1. Table of contents .......................................................................1 2. Read first........................................................................................2 3. Equipment description ................................................
2 important read first important caution: each unit weighs 600 lbs (the top only weighs 410 lbs). For safe handling, installer should obtain help as needed, or employ appropriate materials handling equipment (such as a forklift, dolly, or pallet jack) to remove the unit from the skid and move it to ...
3 important read first important warning: keep water and solutions out of controls. Never spray or hose control console, electrical connections, etc. Caution: most cleaners are harmful to the skin, eyes, mucous membranes and clothing. Precautions should be taken to wear rubber gloves, goggles or fac...
4 equipment description electric range exterior ¾ the range dimensions are 30” (76.2cm) high, 38” (96.5cm) deep, and 36” (91.5cm) wide. ¾ the sides, bottom, and rear wall are constructed stainless steel. ¾ the range surface can come in 5 different configurations. Range top controls the rf21 series r...
5 installation receiving the range upon receipt, check for freight damage, both visible and concealed. Visible damage should be noted on the freight bill at the time of delivery and signed by the carrier's agent. Concealed loss or damage means loss or damage, which does not become apparent until the...
6 start-ups rf21 series range 1) verify connections at plug and terminal block 2) incoming volt - single phase l1-l2______ three phase l1-l2______ l2-l3______ l3-l1______ 3) amp draw l1______ l2______ l3______ 4) verify actual oven temperature at 350 °f ________ °f. Model #_______ date_______ serial...
7 general range the range is designed to give, well regulated, uniform heat throughout the oven and over the surface units. The oven and surface units should be thoroughly preheated before being used. It is advantageous from an operating cost stand point to operate with the switches and/or thermosta...
8 range top consists of the various top arrangements, depending on specific model purchased: 12" x 24" hot plate controlled by high temperature thermostats. Temperature ranges from 0 °-800°. Recommended: stock pots and heavy kettle work. Round french plates, controlled by indicating type 6-heat swit...
9 sequence of operation oven power switch to “on” position. 208/ 240 vac to motor. Motor turns on. 208/240 vac to thermostat. Thermostat turned on. 208/ 240 vac to contactor. Contactor energizes. 208/ 240 vac to elements. Hot top 208/ 240 vac to thermostat. Thermostat turned on. 208/ 240 vac to elem...
10 troubleshooting oven oven will not heat probable cause corrective action defective fuses. ¾ replace fuse. Incorrect wiring ¾ confirm that oven is getting proper voltage. ¾ confirm that range is phased correctly. Defective thermostat ¾ confirm that thermostat is getting correct voltage. ¾ confirm ...
11 troubleshooting cont’d french plate french plate will not heat probable cause corrective action incorrect wiring ¾ confirm the french plate is wired correctly. ¾ confirm that range is phased correctly. Defective 6-heat switch ¾ confirm that switch is wired correctly. ¾ confirm that switch is oper...
12 technical data oven element resistance volts part # resistance amps ¾ 208 volt 11090-09 7.0 Ω 29 ¾ 240 volt 11090-10 9.6 Ω 25 ¾ 480 volt 11090-11 37.0 Ω 12.5 hot top resistance volts part# pin # resistance amps 208 volt 11010-341 1-2 1-3 1-4 2-3 2-4 3-4 46.0 Ω 68.8 Ω 23.2 Ω 23.0 Ω 23.4 Ω 46.0 Ω 2...
13 technical data cont’d griddle & top plate elements volts part # resistance amps ¾ 208 volt i/s 11010-10 14.5 Ω 14.5 ¾ 208 volt o/s 11010-09 21.5 Ω 9.5 ¾ 240 volt i/s 11010-22 19.0 Ω 12.5 ¾ 240 volt o/s 11010-21 28.0 Ω 8.0 ¾ 480 volt i/s 11010-24 76.0 Ω 6.0 ¾ 480 volt o/s 11010-23 115.0 Ω 4.0 moto...
14 technical data cont’d 3-heat switch wiring off pos. 1 pos. 2 pos. 3 1 3 2 1 2 c l 1 l 2 4 1 3 2 1 2 c l 1 l 2 4 1 3 2 1 2 c l 1 l 2 4 1 3 2 1 2 c l 1 l 2 range amperage, and wattage nominal amps per line at each connection three phase single phase 208 volts 240 volts 480 volts 208v 240v model num...
15 rf21s wiring diagram 208/240
16 range top wiring 1. Griddle and top plate element 2. Pilot light 3. 450 ° griddle thermostat 4. Circuit breakers 5. French plate 6. 6-heat switch 7. Hot top 8. 850 ° hot top thermostat..
17 rf21s 480 wiring diagram.
18 rf21s electric range description part no. Element top plate 208v o/s 2000 watts 11010-09 element top plate 208v i/s 3000 watts 11010-10 element top plate 240v o/s 2000 watts 11010-21 element top plate 240v i/s 3000 watts 11010-22 element top plate 480v o/s 2000 watts 11010-23 element top plate 48...
19 rf21s electric range description part no. Fuse holder 15 amp 30901-02 transformer 480/240 vac 31400-04 transformer 380/240 vac (marine units only) 31400-17 pilot light 208/240v 6” lead black body 31601-01 pilot light 480v 6” lead black body 31601-02 pilot light rectangular 250 volt (before c-3555...
