Pentair PROWLER 920 User manual

IMPORTANT SAFETY INSTRUCTIONS
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PROWLER® 920
ROBOTIC INGROUND POOL CLEANER
INSTALLATION AND
USER’S GUIDE

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the following contact information:
CUSTOMER SERVICE / TECHNICAL SUPPORT
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Phone: [phone]
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TABLE OF CONTENTS
Maintenance ........................................................
LED Indicator Lights
Removing the Cleaner from the Pool
Cleaning the Filter Basket
Periodic Filter Screen Cleaning
Cleaning the Impeller
Storing the Cleaner
Troubleshooting ..................................................
Replacement Parts ..............................................
Important Warning and Safety Instructions .......
Preperation of the Pool and Cleaner ...................
Overview
Cleaner Components
Cleaner Features
Initial Setup
Operation ...............................................................
Weekly Timer
Setting the Weekly Timer
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PROWLER® 920 Robotic Inground Pool Cleaner Installation and User’s Guide
RCD Instructions .............................................. 11

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PROWLER® 920 Robotic Inground Pool Cleaner Installation and User’s Guide
INTRODUCTION, SPECIFICATIONS AND WARNINGS
INTRODUCTION
Thank you for purchasing a Pentair Robotic Pool Cleaner.
We are sure that your Pentair Robotic Pool Cleaner will provide you with reliable, convenient
and cost-effective pool cleaning. Its reliable filtration in all pool conditions and active brushing,
enhance pool hygiene.
Robotic Pool Cleaners by Pentair deliver advanced cleaning technologys, long-lasting
performance and easy maintenance. You and your family will be free to enjoy your swim with
full confidence that your pool is completely clean.
SPECIFICATIONS
Motor protection: IP 68
Minimum depth: 0.80m / 2.6ft
Maximum depth: 5m / 16.4ft
WARNINGS AND CAUTIONS
Warnings
• Use the originally supplied power supply only
• Ensure the electrical outlet isprotected by a ground fault interrupter (GFI) or an
earth leakage interrupter (ELI). Or residual current device (RCD) see page 11.
• Keep the power supply out of standing water
• Position the power supply at least 3m/10ft away from the edge of the pool
• Do not enter the pool while the Pool Cleaner is working
• Unplug the power supply before servicing
Cautions
Use the Pool Cleaner in the following water conditions only:
Chlorine Maximum 4 ppm
pH 7.0-7.8
Temperature 6-34°C
NaCl Maximum 5000 ppm
CAUTION
Digital Power supply
Input: 200-230 AC Volts
50-60 Hertz
Output: <30 VDC
IP 54

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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Overview
Prowler®920 Robotic Pool Cleaners are designed to scrub, vacuum, and filter (including the waterline) your inground
pool. Before operating this product, be sure to read and follow all warning and safety instructions on pages ii-iii.
Cleaner Components:
• Cleaner with 60 ft. Floating Cable
• Power Supply
Cleaner Features:
• Weekly Timer
• Wall and Waterline Scrubbing
• Top Loading Basket Filtration
PREPARATION OF THE POOL AND CLEANER
Cleaner with 60 Ft.
Floating Cable Power Supply
STEP 1:
Power Supply and Caddy Placement
Position the power supply at least 10 feet (3 m) from the
edge of the pool. See Figure 1.
STEP 2:
Unroll Floating Cleaner Cable
Unroll the floating cable and stretch it out completely so
that is has no kinks. See Figure 2.
Initial Setup
Before using the cleaner for the first time, perform the following procedures:
Figure 2
Figure 1
STEP 3:
Connect Power Supply to Cleaner
Connect the floating cleaner cable to the power supply.
Ensure the connector notch is lined up with the
corresponding groove in the socket on the power supply.
Turn the cable connector clockwise to lock the cable into
the power supply connection. See Figure 3.
Figure 3

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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Figure 4
STEP 4:
Connect Power Supply to Power Source
Connect the power supply to the electrical source/outlet.
See Figure 4.
RISK OF ELECTRICAL SHOCK OR
ELECTROCUTION: Connect only to a grounding
type receptacle protected by a ground-fault circuit-interrupter
(GFCI). Contact a qualified electrician if you cannot verify that the
receptacle is protected by a GFCI.
To reduce the risk of electrical shock, do not use
extension cord to connect unit to electrical supply;
provide a properly located outlet.
Do not switch the pool cleaner to “ON” if it is not
fully immersed in water. Operating the cleaner out
of water will immediately cause severe damage and will result in loss
of warranty. Do not leave the cleaner in the pool all the time. Always
remember to turn the power supply “OFF” and unplug it from the power
outlet before removing the cleaner from the pool.
1. Be sure the power supply is positioned at least 10 feet
(3 m) from the pool.
2. Lower the cleaner into the pool by the handle (see
Figure 5).
Note: Never lower the cleaner into the pool by the
floating cable. This puts an unnecessary strain on the
cable and could result in damage to the cleaner.
3. Gently tilt the cleaner from side to side or turn upside
down to release trapped air. See Figure 6.
Figure 5 Figure 6
STEP 5:
Placing the Cleaner in the Pool

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920 Robotic Inground Pool Cleaner Installation and User’s Guide
OPERATION
Weekly Timer
The power supply has a timer control that allows you to set an automatic cleaning schedule each week. Be sure the cleaner
is fully immersed in water before turning on the power.
Setting the Weekly Timer
When the power supply is switched on, you may choose a pool cleaning
schedule for the coming week by pressing the Weekly Timer button.
Note: The cleaner will always begin to work upon set-up.
Schedule LEDS:
LED 1 - The cleaner will automatically work every day for a full cycle
= 7 times per week. Press the Weekly Timer button once to
select this interval.
LED 2 - The cleaner will automatically work every other day for a full
cycle = 3 times per week. Press the Weekly Timer button
twice to select this interval.
LED 3 - The cleaner will automatically work every 3 days = 2 times
a week. Press the Weekly Timer button three times to select
this interval.
Pressing the Weekly Timer button four consecutive times will reset the cleaner’s schedule. If you do not press any of the
buttons within the first 5 seconds after the power has been switched on, the cleaner will default to running one cycle only.
While the cleaner is working in weekly timer mode, the appropriate Weekly Timer LED will blink constantly between cycles.
At the end of the week the power supply automatically shuts off.
1 2 3
3 Schedule
LEDs
On/Off
Button
Weekly Timer
Button

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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Removing the Cleaner from the Pool
The cleaner will shut off automatically at the end of a cleaning cycle. Follow the steps below
to remove the cleaner from the pool.
1. Disconnect the power supply cable from the electrical outlet and disconnect the
cleaner communication cable from the power supply.
2. Using the floating cleaner cable, slowly and gently pull the cleaner to the waterline
at the edge of the pool until you can reach the handle. DO NOT lift the cleaner out
of the water by the cable.
3. Using the handle, lift the cleaner out of the pool. See Figure 9.
Note: Never lift the cleaner out of the pool by the floating cable. This puts an
unnecessary strain on the cable and could result in damage to the cleaner.
4. Place the cleaner on the edge of the pool and allow excess water to drain from the
cleaner body and basket. See Figure 10.
5. Disconnect the floating cable from the power supply.
6. Store the cleaner in a covered area with the floating cable coiled.
MAINTENANCE
Ensure the power supply is turned “OFF” and disconnected from the electrical source/outlet
before removing the cleaner from the pool. Operating the cleaner out of water will immediately
cause severe damage and will result in loss of warranty. Do not leave the cleaner in the pool all the time.
Figure 9
Figure 10
LED Indicator Lights
The Prowler®920 Robotic Pool Cleaner includes an LED indicator just
above the scrubber on the front side of the cleaner (see Figure 8). During
normal operation powered by the power supply the LED indicator will
blink blue.
LED
Indicator
Figure 8
Make sure the cleaner’s power supply is turned “OFF” and is disconnected from the electrical source/outlet before servicing
the cleaner. Moving parts may injure hands or fingers if cleaner inadvertently powers on during servicing.

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PROWLER
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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Cleaning the Filter Basket
Note: It is highly recommended that you clean the filter basket after each cleaning cycle. Too much debris in the filter will
restrict the suction power of the Prowler®920 Robotic Pool Cleaner and reduce its effectiveness.
To clean the filter basket, follow the instructions given below:
Figure 11
STEP 1:
Open the Filter Cover
When the filter cover is opened the filter basket handle will
pop up independently. See Figure 12.
Figure 13
STEP 2:
Lift the basket out of the cleaner body.
Figure 12
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2
Figure 14
STEP 3:
Empty the Filter Basket
Open the latch at the bottom of the filter basket. This will
release the bottom lid of the basket and dump much of the
collected debris. See Figure 14.
Figure 15
STEP 4:
Clean the Filter Basket
Thoroughly clean the filter basket with a garden hose. See
Figure 15.

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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Periodic Filter Screen Cleaning
Note: It is recommended that you clean the filter screens at least once a month. Too much debris in the filter screens will
restrict the suction power of the Prowler®920 Robotic Pool Cleaner and reduce its effectiveness.
To dismantle and clean the four filter screens, follow the instructions given below.
STEP 1:
Remove the Filter Screens
Using your thumbs, firmly press inwards on the top of
Panel 1 to remove the filter screen from its frame (see
Figure 16).
Each filter screen is stamped with a number (see Figure
17). Remove the filter screens in numerical order; Screen
1 > 2 > 3 > 4.
Figure 16
Figure 17
STEP 2:
Clean the Filter Screens
Thoroughly clean the filter screens with a garden hose.
See Figure 18.
Figure 18
STEP 3:
Reassemble the Filter Screens
Replace the filter screens by seating the bottom of the
screen into its frame, then pushing firmly outwards on the
top of the screen until a click is heard.
Each filter screen is stamped with a number (see Figure
19). Replace the filter screens in numerical order; Screen
4 > 3 > 2 > 1.
Figure 19

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PROWLER
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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Cleaning the Impeller
Always disconnect power to the cleaner before servicing, disassembly, or reassembly. Failure to do so could result in death or
serious injury to servicemen, pool users or others due to electrical shock. Read all servicing instructions before servicing the cleaner.
Every so often debris may become trapped in the Prowler® 920 Robotic Pool Cleaner’s impeller. To clean out debris
trapped in the impeller opening, follow the instructions below:
STEP 1:
Open the Filter Cover and Remove the Basket
See Figure 20 and Figure 21.
Figure 20
Figure 21
STEP 2:
Unmount and Remove the Intermediate Cover and
Manifold Assembly
1. Using a No. 2 Phillips-head screwdriver, remove the two
screws that hold the intermediate cover and manifold
assembly in place. These screws can be found in the
inside corners of the intermediate cover. See Figure 22.
2. Place the two screws to the side.
3. Gently pull the intermediate cover (Item #2 in Figure 22)
away from the cleaner and place it to the side.
4. Gently pull the manifold assembly (Item #3 in Figure 22)
away from the cleaner and place it to the side.
2
1
3
Figure 22
STEP 3:
Unmount and Remove the Impeller Cover
Press the tabs on both sides of the impeller cover
(Item #1 in Figure 23) to unlock the cover from the
impeller assembly. While pressing both tabs, pull the
cover away from the cleaner.
Place the impeller cover to the side.
1
Figure 23
Figure 24
STEP 4:
Clean Debris from the Impeller
By hand, remove any debris that has become trapped
around the impeller. See Figure 24.

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PROWLER
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920 Robotic Inground Pool Cleaner Installation and User’s Guide
Storing the Cleaner
Any time the cleaner will not be in use for an extended period of time, for example during the winter, follow the storage
recommendations below:
•Be sure to disconnect the power supply after use.
•Store the power supply, cable, and cleaner with the caddy if included with the cleaner.
•Store the cleaner in a protected area out of direct sun, rain and frost, at a temperature between 5°-45°C / 41°-113°F.
•Drain all water from the pool cleaner.
•Thoroughly clean the filter basket and filter screens and store the cleaner with them installed.
STEP 5:
Remount the Impeller Cover
Gently push the impeller cover back onto the impeller
assembly. See Figure 25.
The tabs on the motor unit will lock the cover into place.
Figure 25
STEP 6:
Remount the Intermediate Cover and Manifold
Assembly
Reseat the intermediate cover and manifold assembly and
reinstall the two screws that hold the cover and manifold
assembly in place. See Figure 26.
2
1
3
Figure 26

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PROWLER
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920 Robotic Inground Pool Cleaner Installation and User’s Guide
TROUBLESHOOTING
Problem Possible Cause Corrective Action
Cable twisting or cable
coils up.
Obstruction in pool
Gets stuck on main drain cover
Excess cable in the pool
Remove obstruction in pool.
Turn off filter and install main drain cover ring.
Straighten cable and lay in sun periodically.
Remove excess cable from pool.
Cleaner is moving in
circles
Dirt stuck in moving parts
Tracks worn due to extended use
Power supply positioned incorrectly
Algae in pool
Remove dirt from moving parts.
Contact your dealer. Replace tracks.
Place power supply in a position so that the cleaner
can reach all walls.
Correct pool and water conditions.
Cleaner does not reach
all areas of the pool
Power supply positioned incorrectly
Cleaner does not climb walls
Algae on pool walls and floor
Pool filter and pump is on
Place power supply in a position so that the cleaner
can reach all walls.
Check reasons for not climbing walls below.
Brush pool walls and floor.
Turn off pool filter and pump and run another
cleaning cycle.
Cleaner does not
climb walls
Cleaner is too heavy
Algae on walls
Water temperature too low and/or too high
Brushes are worn
Debris caught around impeller
Cleaner is too light from trapped air
Unsuitable pH level
Clean and wash cartridge.
Brush walls.
Ideal water temperature between 54-90° F (12-32° C)
Replace brushes - contact your dealer.
Clean impeller (see page 7).
Turn cleaner upside down under water to remove
trapped air.
Check pH level - should be between 7.4 - 7.8;
minimum level of 7.2.
Motor not working Impeller blocked
Drive system blocked
Electrical problem - motor unit, floating
cable, or power supply
Clean impeller (see page 7).
Clean tracks and wheels.
Consult with your dealer or service center.
Cleaner will not sink Air caught in trapped in cleaner Turn cleaner upside down under water to remove
trapped air. Wash the cartridge. Remove calcium
deposits or other chemical sediments.
Open inlet flap in the bottom lid to remove dirt and/or
trapped air.
Power supply or power
supply switch light is
not working
Not plugged in properly or main socket
is damaged
Reconnect and check main power supply.

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920 Robotic Inground Pool Cleaner Installation and User’s Guide
REPLACEMENT PARTS
13
Item # Part # Description
1360360 Power Supply
2360361 Communication Cable
3360362 Filter Basket
*360363 Cartridge Filter Kit
*360364 Net Filter Kit
6 360365 Motor Unit
7360366 Front Brush Mounting,
Left
8360366 Front Brush Mounting,
Right
9360367 Rear Brush
10 360368 Rear Brush Mounting
11 360370 Manifold Assembly
12 360371 Impeller Cover
13 360372 Front Wheel Assembly
(1 Set)
14 360373 Latch
15 360374 Filter Cover
16 360375 Intermediate Cover
17 360376 External Housing
18 360377 Left Grill
19 360378 Right Grill
20 360379 Internal Float
21 360380 Side Panel
22 360381 Rear Wheel Assembly
(1 Set)
23 360382 Bypass Cover, Left
24 360383 Bypass Cover, Right
25 360384 Rapid Drain Flap
26 360385 Handle Assembly
27 360345 Active Brush
28 360357 Rubber Strips
*360340 Impeller
*360386 Small Screw Set,
KA50x20
*360387 Large Screw Set,
KA50x16
Note (*): Not Shown
Illustrated Parts List Prowler 920 Parts List

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PROWLER® 920 Robotic Inground Pool Cleaner Installation and User’s Guide
RCD OPERATING INSTRUCTIONS
Step 1
Plug into power socket
Step 2
Press the RESET button - the
indicator light should turn on
Step 3
Press the TEST button - the
Step 4
Press the RESET button for use.
Do not use if TEST FAILS
(i.e. the indicator light does not
RESET
TES T

NOTES

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© 2016 Pentair Water Pool and Spa, Inc. All rights reserved. This document is subject to change without notice.