Double K Industries Challengair 850 Series User manual

9711 Mason Ave.
Chatsworth, CA 91311
Phone: [phone]
Fax: [phone]
Toll Free: [phone]
8 85 50 0
Forced Air Dryer Instruction Manual
Please read all instructions before operating your dryer. Keep for future
reference.
Congratulations on your purchase of the Double K Challengair 850/850-XL Forced Air Dryer. The Double K
Challengair 850 and 850-XL Dryers produce high velocity warm air under pressure to make your grooming
tasks easier. Your new dryer is designed to provide long, reliable service.
The 850 and 850-XL are available in both stand and portable models. The stand model is equipped with
a grooming arm for use during table drying. The 850-XL model produces 15% more air than the 850. Both
the 850 and the 850-XL are available with a variable speed option for greater air flow control.
A warranty card is included with your dryer and should be filled out completely and mailed to Double K
Industries within 30 days of the purchase date of your dryer to validate your warranty. It is also important to
retain your sales receipt as proof of purchase should service ever be needed.
Your 850/850-XL Challengair Dryer has brush type motors (Both the 850 and 850-XL have two motors). It is
important that the brushes be changed when they become worn down to prevent damage to your dryer
motors (Brushes are a maintenance procedure and are not covered under warranty). We suggest
checking the motor brushes after every 600 hours of dryer use. Please see section on “Brush Changing”
in this manual for instructions.
Important Safeguards
DO NOT TURN ON DRYER WITH OUT FIRST HOLDING THE DRYER HOSE as the air volume from the
dryer can cause the hose to move and swirl and may cause injury.
1. Do not leave dryer unattended while in use. Check animal often during drying.
2. Unplug unit when not in use.
3. Do not use extension cords with dryer.
4. Do not expose dryer to rain or water.
5. Do not use or store where it can fall or be pulled into tub or sink or standing water. If dryer falls
into water… UNPLUG IT… DO NOT REACH INTO THE WATER!
6. Do not unplug unit by pulling on cord.
7. Do not operate while standing in or near water.
8. Unplug unit before attempting any service or maintenance.
9. Do not direct air toward eyes.
10. Keep loose clothing, jewelry and hair away from dryer openings.
11. Keep filters clean. Hair build-up limits air intake and may damage motor.
12. Plug only into a properly grounded receptacle. Always make sure the amperage of the
electrical outlet is sufficient for the amperage rating of the product. (Read further into manual
for amperage rating of this product)
13. Do not use this product for anything other than its intended use.
14. Do not attempt to perform any service or maintenance not outlined in this manual. Contact
Double K Industries or Authorized Service Center if additional service is needed. Do not block
dryer intake or put into dryer openings.
A NOTE ABOUT HEAT: Your Challengair 850/850-XL dryer has no heating element. The Challengair
produces heat by a “flow-thru” motor system meaning the air is pushed through the motor and is
warmed by the natural heat of the motor that occurs during use. This means greater electrical
savings and efficiency for you and that the dryer will reach maximum heat after about 3-5 minutes of
use. Obviously the greater the ambient temperature, the warmer the air from the dryer.
Specifications:
Model 850 Model 850-XL Model 850-230v
Voltage – 115 Voltage - 115 Voltage - 230

Amps -12.98 Amps - 17.72 Amps - 10.32
Watts -1493 Watts - 2038 Watts - 2374
Air Volume - 204 CFM Air Volume - 240 CFM Air Volume - 240 CFM
(Combined Motor Specs) (Combined Motor Specs) (Combined Motor Specs)
Operation- Switches and Controls:
1. Standard Speed- The standard two speed unit has two toggle switches. Each switch operates one of
the two motors in your dryer. You may use just one motor for low air or turn on both switches for high air
volume. “On” is in the up position and “Off” is down.
2. Variable Speed- This unit has a dial speed control and a three position toggle switch . Center position
of the toggle switch is “Off”. The down position of the switch is full power, the up position of the toggle
switch activates the variable speed control knob which allows the dryer to run at lower air volumes by
turning the knob “counter-clockwise” and higher by turning “clockwise.”
To Control Lower Air Outlet: Turn the black control knob counter-clockwise to close the lower outlet and
clockwise to open the outlet.
*NOTE: The upper outlet is open at all times.
** NOTE: Stand Dryers Only… If you wish to do only hose drying with the highest possible air flow, the
arm extension on the upper air outlet may be removed by loosening the black thumb nuts at the base of
the arm. A hose may then be used in the upper air outlet with the bottom outlet turned off.
STAND MODEL ASSEMBLY
Your dryer is packaged in two boxes. Your boxes include: Box 1: The dryer body. Box 2: Stand base with
casters, Y-bar, stand assembly, two 6’ twist-on hoses, one arm extension, one air diffuser, 3 nozzles, 2
hose to cage attachments with tie-wrap fasteners and two hose adapters. To assemble your dryer, first
attach the Y- of the Y-bar between the washers on the knob post. The Y-bar slot has a slight angle to it
and should be positioned pointing toward the front of the dryer. Make sure the electrical cord exits toward
the back of the dryer and the back of the Y-bar. Re-tighten knobs to hold dryer at desired angle. Attach
the arm extension to the dryer body by loosening the finger nuts around the upper air outlet on the dryer
body. Align the holes in the arm extension with the bolts in the dryer face. Tighten finger nuts securely for
a snug fit.
Assembly of Stand
The stand tube assembly is pre-assembled and wrapped in paper. The stand tube assembly is
compressed and held in position by the center clamp. Loosen the handle on the clamp and allow the
spring to extend the tube assembly. Place the end of the larger outer tube down into the center of the
stand base. Twist and push down firmly. Lift the dryer head assembly, and position over the assembled
stand and slide the tube of the Y-bar into the upper stand tube. With clamping handle still loose, raise or
lower dryer to desired height and tighten stand adjustment handle as explained in the next paragraph.
Stand height Adjustment and dryer angle adjustment: Your dryer has "ratchet" type adjustment
handles on the stand and the dryer. To tighten an adjustment handle, turn the handle clockwise as far
as is comfortable. As necessary, for additional tightening, pull the handle out to disengage the "ratchet"
and while keeping the handle pulled out, turn the handle counter-clockwise to a suitable position for
continued tightening . Release the handle to engage the "ratchet" again and repeat these procedures
until the adjustment handle is tight. Reverse the turning direction of these actions to loosen an
adjustment handle. NOZZLE: The nozzle at the end of the extension arm may be rotated to change the
direction of the airflow. Simply rotate nozzle to the desired direction .
Dryer Stand: Your dryer stand has two locking casters to keep the dryer from rolling inadvertently. To
lock wheels, press down the small tab on the locking casters. To unlock, lift up on tab . For long life and
smoother operation, avoid rolling casters through cut hair that has fallen on the floor.
PORTABLE MODEL
Your Portable 850 should include: One 6’ twist-on hose (two with dual outlet dryers), one air diffuser, 3
nozzles, 2 hose to cage attachments with tie-wrap fasteners (4 with dual outlet dryers) and one hose
adapter (two with dual outlet dryers)
ACCESSORIES AND ATTACHMENTS
Your dryer is equipped with twist-on hoses and nozzles. To attach hoses to dryer place hose into air
outlet and twist “counter-clockwise”. To attach nozzles to hose, twist the nozzles “counter-clockwise”.
Cage Diffuser Attachment: This attachment is used for diffused air into the animal’s cage. To attach the
hose to the diffuser, attach the hose adapter to the hose by twisting it counter-clockwise. Then insert the
adapter into the hose to cage attachment.
Hose To Cage Attachments: These attachments are used to attach the hose to the cage for forced
air drying in the cage. Use the plastic tie-wraps to hook the round attachments to the cages. Be sure
to cut off the excess tie-wrap material after attaching to cages. Place the hose adapter on the end of
the hose by twisting counter-clockwise and then place the adapter into the hose to cage attachment.
MAINTENANCE- Brushes
Your 850/850-XL dryer has a brush-type motor. The brushes should be checked for wear after
approximately 600 hours of use. If the carbon brush is worn shorter than ¼ inch, the brushes should
be replaced. Brushes may be ordered from Double K Industries or an authorized service center.
Please be sure to specify whether your dryer is an 850 or 850-XL as the brushes are slightly different
from one another.
To Check and/or Replace brushes: (a) Unplug electrical cord from wall outlet. (b) Detach your
front plate by loosening the fastening screws. (See Fig. 1). (c) Remove front plate and set aside
(motors and brushes are now visible and accessible). (d) Remove tab from brush assembly using a
flat blade screwdriver to push it out of the brush housing. (See fig. 2) (e) Loosen and remove the two
screws in the brush bracket and remove brush. (f) Insert new brush assembly in place and replace
brush holding bracket by replacing and tightening the two screws. (g) Insert the brush tab into the
cavity of the new brush. (h) Replace dryer front plate and securely tighten all fastening screws.
Filter Cleaning
The filters of the 850/850-XL Challengair Forced Air Dryer should be kept clean. If these become
heavily coated with hair and/or dirt, it could reduce the air output of your dryer and cause damage to
the motor. Never operate the dryer without filters in place.
To clean the back external filter of the 850/850-XL dryer:
(a) Unplug Dryer (b) Remove the fastening screws from the dryer back plate. (see fig.3) (c) Remove
the dryer back plate and set aside. (d) Remove individual motor filter discs on the back of each
motor by turning and pulling filter off motor. (See fig. 4) (e) Clean motor filter discs by vacuuming off
hair and dirt or wash filters gently in cool water and allow to air dry completely. (f) Replace filter
discs on motor by pushing in place and turning to secure. (g) Replace dryer back plate and replace
fastening screws securely.
Any maintenance or service not explained in this manual should be performed by Double K
Industries or an authorized service center. Call Double K Industries for the name of the service
center nearest you. All warranty service must be performed by an authorized service center to
protect your warranty status.