WASH TANK HEATING SYSTEM EXPLANATION
The wash tank heater system is electrically connected in the circuit so that it is dependent upon the dishwasher being properly filled
with and maintaining a safe water level. The system is made up of two thermostats (mounted in the junction box behind the front panel),
a water level probe (mounted in the wash tank), the wash heater contactor (mounted in the control box), and the wash heater itself.
Once the water level control (WL) senses water contact (conductivity) through the water level probe (HP), it energizes the wash heater
contactor (R2). This closes the contacts to the wash heater (H2) to provide energy to heat the water in the tank.
The wash heater thermostat (TS2), which senses water temperature through a capillary bulb in the tank, will maintain tank tempera-
ture. When the water temperature reaches 155 degrees F. an N. C. contact in the thermostat opens which de-energizes the wash
heater contactor (R2). This shuts down the wash tank heater (H2).
When the water temperature falls below 150 degrees F. the contacts in the thermostat will close and the the wash tank heater (H2) will
energize to maintain the water temperature at 155 degrees nominal.
The high limit thermostat (HTLS) with a direct sensing probe prevents damage to the wash tank heater due to over-temperature con-
ditions. Should the wash tank heater (H2) reach a temperature of 210 degrees F., a N.C. contact in the high limit thermostat (HLTS)
opens which de-energizes he wash heater contactor (R2). This shuts down the wash tank heater (H2). When this occurs the heater
overload light (E2, amber) will come on to indicate a temperature problem.
Once the dishwasher has been filled to the correct level, the wash tank heater should operate automatically.
TUB FRONT ASSEMBLY (CONTINUED)/WASH TANK HEATING SYSTEM
21
ITEM QTY DESCRIPTION Mfg. No.
1 8 Screw, 1/4"-20 x 1/2" Long 5305-274-02-00
2 8 Locknut, 1/4"-20 with Nylon Insert 5310-374-02-00
3 8 Washer, 1/4"-20 ID, S/S, Flat 5311-174-01-00
4 1 Frame Weldment 5700-031-48-01
5 4 Bullet Foot 5340-108-01-03
6 1 Discharge Hose 5700-011-88-24
7 2 Hose Clamp 4730-719-01-37
8 1 Gauge Bracket (Side Mount Control Box Only) 5700-011-48-08
9 1 Thermometer, Wash (Side Mount Control Box Only) 6685-111-40-38
10 1 Thermometer, Rinse (Side Mount Control Box Only) 6685-111-40-39
11 2 Locknut, 10-24 with Nylon Insert 5310-373-01-00
12 1 Decal, Gauge Bracket (Side Mount Control Box Only) 9905-011-50-88
13 1 Thermostat, High Limit 5930-121-71-36
14 2 Thermostat Bracket 5700-011-73-72
15 1 Thermostat, Regulating 5930-121-67-72
16 1 Decal, High Limit 9905-011-84-32
17 1 Decal, Thermostat Regulating 9905-011-84-31
18 4 Locknut, 6-32 with Nylon Insert 5310-373-03-00
19 1 Fitting, 1/4" Imperial Brass 5310-924-02-05
20 1 Wash Heater Gasket 5330-011-47-79
21 4 Lockwasher, 5/16", S/S, Split 5311-275-01-00
22 4 Nut, Hex, 5/16"18, S/S 5310-275-01-00
23 1 Probe, High Water 6680-200-02-68
24 1 Lower Wash Manifold Weldment 5700-031-46-00
25 1 Nipple 5700-021-34-84
*26 1 Clamp, Hose 5 5/8" to 6" 4730-011-34-90
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