DRIZAIR 1200, 2400 Troubleshooting Manual

DrizAir 1200/2400 Pump Troubleshooting Guide

All service procedures below are to be executed with the power off, i.e., unplugged.

Tools Required:

(1) Flathead Screwdriver (1) Q-Tip Cotton Swab

Preparation:

1. Read all pump and testing instructions carefully before
checking and servicing pump on dehumidifiers.

2. Make sure you have all the parts and tools required to
perform inspection, repair and upgrade as listed in these
instructions.

3. Make sure the dehumidifier is disconnected from the
power source before starting any of the following proce­dures.

Removing Dehumidifer Cover and Accessing Pump

4. DrizAir 1200
front cover in the following order. While unit is standing
up, remove the two near the wheel axle. Place unit on its
back, remove the two located on top, in front of cover.
Last, remove the two located on bottom of unit near the
front feet. All bolts can be identified because they are all
3/8”. Remove front cover.

DrizAir 2400: Lay unit on its back and unscrew the four
7/16” bolts on the grey bucket. Remove bucket and turn
upside down. Then set the pump on it, using it as a table.

5. DrizAir 1200
power cord, and remove the two 5/16” mounting bolts lo­cated to the rear of the pump with nut driver.

DrizAir 2400
cord in place inside unit.you may not need to snip the zip
tie if there is already plenty of slack in the power cord to
set pump on grey bucket. The objective is to remove the
pump just far enough to access the two Phillips screws
[#10], one on each side of pump cover [#1].

Inspecting External Pump Components

6. With pump exposed, inspect ½” clear drain tube entering
pump on right side to insure it’s properly seated into
pump. If too short or kinked it may need to be replaced.

7. Pull tube out and verify bottom of tube has a 35-degree
notch cut into it. This prevents a seal from occurring be­tween the hose and bottom of resourvoir tank. If seal oc­curs, water will back up in the drip tray and overflow.

8. Using screwdriver, remove pump-out tube from black
check valve [#25] located on left side of pump. Be careful
not to break fixture.

9. Unscrew check valve.

10. Look into the bottom of the check-valve assembly. Using
needle nose pliers carefully remove bottom of check valve
assembly by inserting one side of pliers approximately
1/8” into hole, grasp and pull carefully. A small bearing
should fall out so be careful not to lose it. Now you can
inspect for debris in assembly and clean accordingly.
Clean and reinstall.

15180 Josh Wilson Road, Burlington WA 98233 •Tel: [phone] Svc Fax [phone] www.dri-eaz.com

PN 07-00397 Microswitch Kit Instructions - 2/28/02 1

(1) 5/16” Nutdriver or wrench (1) Phillips Screwdriver

(1) Needlenose Pliers (1) 6" x 8" piece of Cardboard

: Remove the six 3/8” bolts holding on the

, Carefully snip the zip tie holding the coiled

, Carefully snip the zip tie holding the power

Removing Pump

11. Remove pump from base by sliding to the left. While
slightly lifting the silver pump shield up, pull pump up and
out to left. Place piece of cardboard on top of refrigeration
coils and rest pump gently on top of it, using it as a table.

12. Remove two pump cover screws [#10], and set pump cover
[#1] aside.

Inspecting Internal Pump Components

13. With cover removed, visually inspect microswitch [#7]

for looseness. If loose, gently tighten screws [#8]. Note:
Over tightening will cause switch to bind up inside and
fail. If switch is snug and no parts missing, continue.

14. Check operation of microswitch by lifting float stem

[#15] upward, listening for the switch activation “click”
sound. Then, let float stem fall on its own, listening for
the “click” going downward. Switch may need adjusting
or replacement if “click” doesn’t occur in both directions.

Adjustment
mounting peg. If switch is tilted too far back it will not
activate microswitch lever. Note: Do not bend mi­croswitch lever to compensate for unevenness. Loosen
screws, adjust until level and gently re-tighten.

Replacement
down direction, replace microswitch.

Note: Be careful not to over tighten mounting screws and
nuts in either an adjustment or replacement switch situa­tion. Also, be sure to include two locking washers [#6]
per screw, one underneath head of screw [#8] and one
prior to installing hex nut [#5].

15. Inspect to insure two “C”clips [#22] on float stem are in

place, one above and one below microswitch lever.

16. Check to insure float moves freely up and down and is not

restricted. If restricted, clean float stem [#15] and access
port. A Q-Tip works well for this procedure.

17. Check to see if impeller [#20] is spinning freely by spin-

ning the black plastic wheel located on top of motor.

18. Remove the remaining four Phillips screws [#10] from the

top of the pump assembly and separate it from the blue
reservoir tank [#16]. (Any missing microswitch screws or
nuts may be found here.)

19. Inspect bottom of reservoir tank for debris and dirt build

up. Clean accordingly.

20. Visually inspect impeller cover [#18] and gasket for

cracks, warps or exposed gasket material.

21. Remove four impeller cover screws [#17] and check for

debris in housing.

22. Assemble in reverse order. Run unit through several

pump outs to insure repairs.

DRI-EAZ PRODUCTS, INC.

: The microswitch needs to be level to its

: If switch lever hangs up in either up or

SPECIFIC PARTS LIST FOR PUMP

PART REF# ITEM DRI-EAZ

PART NUMBER

Cover - motor 154006 1 -

Fan 154031 2 -

Motor - 115v 979554 3 -

Motor - 230v 979555 4 -

Plate - Motor 154021 4 -

Nut - Hex, 2-54 920035 5 08-00300 2 2

Washer - Lock, #2 921027 6 08-00301 4 4

Switch - VC Pump 950337 7 08-00298

Screw - 2-54 x 9/16” 901600 8 08-00299 2 2

Wire Nut 950403 9 -

Screw - 8-18 x ½” 902436 10 - 16 16

Strain Relief 154038 11 -

Wiring Harness - 115v 951556 12 -

Wiring Harness - 230v 951222 12 -

Lead Wire Assembly 951982 14 -

QTY

115v

• •

• •

•

• •

• •

• •

• •

•

• •

QTY

230v

•

•

PART REF# ITEM DRI-EAZ

Float/Stem Assembly 154017 15 -

Tank 154004 16 -

Screw - 8-18 x ½”, SS 902431 17 - 5 5

Volute, Impeller Cover 154015 18 -

Seal Ring, Nitrile 928006 19 -

Impeller 154009 20 -

Cover, Tank 154005 21 -

Retaining Ring - circlip 923006 22 - 2 2

Washer, Slinger 921063 23 -

Washer, Lock, #8 921015 24 - 2 2

Check Value, VC
Assy

Adapter, ¼” MNPT x
¼” Hose

Plug, Drain Hole 929600 27 -

Screw, 8-32 x ½” 902421 28 -

154715 25 -

154037 26 -

PART NUMBER

QTY

115v

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

QTY

230v

15180 Josh Wilson Road, Burlington WA 98233 •Tel: [phone] Svc Fax [phone] www.dri-eaz.com

PN 07-00397 Microswitch Kit Instructions - 2/28/02 2

DRI-EAZ PRODUCTS, INC.