SIEMENS DISH-WASHER - HOW TO REPLACE CIRCULATION PUMP

SIEMENS DISH-WASHER - HOW TO REPLACE CIRCULATION PUMP

How to replace circulation pump & Impeller to Bosch _ Siemens _ Gaggenau & Thermador Dish-washers

 The circulation pump & capacitor are accessed from the right side of the dishwasher by removing the right side panel and blocking the tank. Use same process to access heater & Apexx modules.

HOW TO REMOVE THE OUTER DOOR

> Remove six T-20 Torx inner door screws below fascia panel -- three per side (1).
> Carefully pull bottom of outer door out from dishwasher until top door tabs clear, then pull door down until it releases from dishwasher (2). Take care to not scratch outer door.
> Remove 1-piece foam or two plastic door guards (3). The plastic door guards occasionally fall out when the outer door is removed.

{Circulation pump 239144 motor is rated 120V, 60 Hz, 160W, insulation class A. Motor has an auto reset thermal protector and uses a 10μF capacitor. The fascia panel and door don’t need to be removed to access the circulation pump. However, they must be removed to completely remove the tank.}

HOW TO REMOVE THE TOE KICK

> Remove two T-20 Torx screws from toe kick (1).
> Tilt toe kick out from under dishwasher (2)

[For models UC/36 & above, toe kicks screw directly into plastic bases using longer screws.]

To remove right &left side panels
Dishwashers may have long or short side panels, depending on model. Removing the left side panel isn’t necessary for access, but allows the right side of the tank to be blocked upward.
> For models with long side panels, remove two T-20 Torx side panel screws through holes in right & left trim strips(1).
> To remove long side panels, lift panels with trim strips up and out from dishwasher(2).
> To remove short side panels, remove two T-20 Torx screws(3). To avoid damaging trim strips (while blocking tanks), slide trim strips up until they clear dishwasher bases.

To raise right side of tank for circulation pump access
> Remove one T-20 Torx screw from both rear corners holding tank to base (1) removing screw from both sides allows tank to be blocked upward.
> Remove right toe kick bracket by removing T-20 Torx screw (2).
> Remove T-20 Torx screws from front right bottom corner holding tank to base (3).
4.Remove right hinge cover(4a), release right door tension cord from hinge (4b)& remove ground wire (4c).
> Raise and block up tank as shown with strut onto base (5a), sliding a piece of wood or other solid material between the tank and base to keep tank from falling back onto base (5b)

[Don’t turn dishwashers’ upside-down for tank access. When dishwashers are turned upside-down, water can flow into the water fill assembly diaphragm and cause water to not fill properly]

> Disconnect wire harness from motor after carefully noting connections (1).
> For UC/11 & later models with softer bearing, lift up rubber straps from both sides of motor (2). For older models, lift motor up from base.
> To release plastic latch on pump/motor housing (@ 2:30 position), carefully push onto latch with screwdriver (3).
> To release motor from pump housing, twist motor to the right (clockwise). Some force may be required. Capacitor should be ~ 11:00 position (4). Pull motor out from pump housing.

{When replacing circulation pumps for softer bearing models (UC/11 & later), reusing existing front pump housings can save time by not changing hose clamps. If
desired, order #172272 hose clamps & replace entire pumps.  Don’t grab motor next to the capacitor to avoid jamming your hand on the capacitor}

COMPARING CIRCULATION PUMP VERSIONS

665510 BLDC pump (1)
* Pump, motor and control come as one unit.
* Speed changes as needed for wash cycle and washability (Variowash).
* Pump is isolated from motor, so no seal is needed and no need to loosen or replace impellers
* Used starting with UC/46 index.

442548 (“Sicasym”) pump (2)
* Most common pump. Used starting with UC/21 index. Smaller than 239144 pump.
* Used with control modules & single wire harnesses designed for Sicasym pumps. Controls have motor starter software.
* Can’tuse # 167085 impeller kit.

437345 pump for water switches (3)
* More powerful for use with water switches (Apexx & ExactWash models).
* Has separate motor starter (# 182318).
* Must use with heaters with water switches & sumps with extra filter cylinder.
* Can use # 167085 impeller kit

239144 pump (4)
* Can buy # 266511 motor separately.
* Can use # 167085 impeller kit.

{Cheater cords can’t be used to check Sicasym and BLDC pumps since they use special starters}

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