Perlick PKHT24 Service Manual

Installation

& Operation Manual

Commercial Glasswasher

Model PKHT24

Model PKHT24 Shown

Form No. Z2346

Commercial Glasswasher Installation & Operation Manual

TABLE OF CONTENTS

Introduction ............................................................................................................................................3

Speciﬁ cations ........................................................................................................................................4

PKHT24 Operational Cycle .................................................................................................................5

Getting Started .......................................................................................................................................6

Receiving and Installation....................................................................................................................6

Electrical ..............................................................................................................................................6

Plumbing..............................................................................................................................................6

BETA Detergent and Rinse Dispenser ................................................................................................7

Safety-Temp Feature ...........................................................................................................................8

Booster Heater Setup ..........................................................................................................................9

Installer Checklist ................................................................................................................................9

Operation ..............................................................................................................................................10

Dema Flow Disc ................................................................................................................................10

Rinse and Wash Temperatures .........................................................................................................10

Startup Procedures............................................................................................................................10

Operating and Cleaning Instructions ................................................................................................. 11

Preventative Maintenance Chart .......................................................................................................12

Quick Service Guide ..........................................................................................................................13

Troubleshooting .................................................................................................................................14

Parts Kits ..............................................................................................................................................16

Customer Notice .................................................................................................................................17

Electrical Diagrams .............................................................................................................................18

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Commercial Glasswasher Installation & Operation Manual

The PKHT24 is a hot water sanitizing, single rack, undercounter glasswasher. It is a stand-alone machine featuring a self-contained booster heater. The only external connections necessary are power supply, water supply, drainpipe, and optional chemical dispensers. The machine uses re-circulated wash water and fresh water ﬁ nal-rinse.

Operation of the PKHT24 is extremely user friendly. To initially ﬁ ll the machine each day, push the switch marked “FILL”. The machine is full when water begins to ﬂ ow into the scrap tray. The booster tank heater will maintain the wash water temperature at 155°F. The booster heater will produce a minimum of 180°F ﬁ nal rinse water each cycle.

The supply water to the PKHT24 must be a minimum of 140°F at 24 psi (Pounds per Square Inch) with a 6 gpm (Gallons Per Minute) ﬂ ow rate and 60 gph (Gallons Per Hour) recovery rate. The pipe sup- plying the water must be a minimum of a 1/2”. The plumbing connection is located at the back of the machine. (See speciﬁ cation sheet).The drain is a 1" barbed ﬁ tting on the back of the machine for easy attachment of your drain hose.

This manual provides a complete reference guide to the PKHT24. The ﬁ rst section explains how the machine is packaged and what to look for when receiving the machine.This manual explains how to install and set up the machine for use. Requirements are given for plumbing, wiring, and space considerations. These are always taken into consideration by our well-trained sales representatives prior to the order being placed. In the manual, guidance is also given for installation to ensure that the machine will be able to run at optimum conditions.

The machine’s functions are mostly automatic and take little training to put into full operation. The Operation section of the manual may be used for instruction and procedures when required. We make this portion of the manual easy to understand so that all levels of operators are able to understand the machine’s operation. The Operation section also includes diagnostic considerations for the machine when problems occur.

We are committed to providing the best products and customer service, and we welcome your feedback.

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Commercial Glasswasher Installation & Operation Manual

SPECIFICATIONS

METRIC EQUIVALENT

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Commercial Glasswasher Installation & Operation Manual

OPERATIONAL CYCLE

The PKHT24 operational cycle has a total cycle time of 2 minutes (120 seconds). The Timing Diagram and the steps listed below detail the individual functions that are executed during each operational cycle.

1. With the machine powered up, toggling the START switch begins a cycle. a) Toggling the START switch energizes both the Cam Timer motor and the Instant Start Relay. The

Instant Start Relay latches ON the power to the Cam Timer motor so that the START switch can be released a moment after it has been toggled without the Cam Timer motor losing power.

b) After about 1.5 seconds the Cam Timer’s ﬁ rst cam — the Cam Timer Motor Cam — latches ON the power to the Cam Timer motor and drops out the Instant Start Relay. The Cam Timer motor continues to run for a total of 2 minutes, at which time it switches OFF — resetting the Cam Timer — and waits for the next START command.

2. The Cam Timer’s third cam controls the Wash Pump. The Wash Pump comes ON about 3 seconds into the Operational Cycle and continues to run for 94 seconds. This 94-second period is the Wash Cycle.

3. At the same time that the Wash Pump comes ON the Cam Timer’s fourth cam powers ON the Optional Drain Pump — if one is present — and keeps it running for about 7 seconds before powering OFF. This cam turns ON again midway through the Rinse Cycle and stays ON for 10 seconds, turning OFF 2 seconds after the Rinse Cycle has completed.

4. About 3 seconds after the Wash Cycle has completed the Cam Timer’s second cam, which controls the Rinse Cycle, turns ON — energizing the Water Solenoid — and stays ON for 16 seconds. This 16-second period is the Rinse Cycle.

5. When the Cam Timer assembly approaches the ﬁ nal rinse portion of the cycle, the “Safe-T-Temp” sixth micro switch will pause Cam Timer assembly if the booster heater has not reached 180 degrees. The machine will remain in wash cycle mode until 180-degree rinse temperature is reached, and at this time the Cam Timer will advance automatically into the rinse cycle and dispense 180 degrees rinse water over the dishes.

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Commercial Glasswasher Installation & Operation Manual

GETTING STARTED

Receiving and Installation

The glasswasher is shipped from the factory in a corrugated box on a wooden pallet. The installation guidelines give a systematic procedure for setting up the machine.

Start by removing the packaging material. Unwrap the machine and check for the following component parts:

The Wash Tank Scrap Screen is shipped inside the wash cavity of the machine. This screen must be in place during operation. It has been designed to perform two basic functions:

1. Strain water that is circulating through the spray arms and pump assembly.

2. A basket to catch broken glass, or heavy solids that may plug the impeller. Set the machine in place, and level from side-to-side and front-to-back.

Electrical

Single-phase 230 volt, 60 Hz dedicated circuit should be used to supply electrical energy to the PKHT24 Glasswasher (see speciﬁ cation sheet on page 4). This system requires three power wires, which include a current carrying neutral. An additional fourth wire must be provided for ground. Approximately 4-feet of ¾” ﬂ exible conduit with power leads (L-1, L-2, Neutral and Ground) extending out of the conduit are provided for easily connecting the power at installation. The power connection must be located such that there is sufﬁ cient length of the ﬂ exible conduit remaining to permit the machine to be moved for cleaning.

Plumbing

The machine is equipped with a 1/2” NPT connection located at the lower left-hand corner (facing the back) of the machine. A 140°F water line should be plumbed to this point (see speciﬁ cation sheet). The water line used must be of sufﬁ cient length and ﬂ exibility to permit the machine to be moved for cleaning.

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All electrical and plumbing connections must be made by a qualiﬁ ed person who will comply with all available federal, state,

and local health, electrical, plumbing and safety codes.

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