Danfoss HG(HA)12P Bock Semi Hermetic Compressors Instruction Manual

: July 23, 2024
: Danfoss

Table of Contents

HG(HA)12P Bock Semi Hermetic Compressors
Product Specifications
Product Usage Instructions
Safety Information
Disassembly
Installation
- Frequently Asked Questions (FAQ)
Q: What precautions should be taken before starting repair work
Q: How should I dispose of the old oil from the
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

HG(HA)12P Bock Semi Hermetic Compressors

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Product Specifications

Model: Electric Motor
Tolerance Angle: DIN ISO 2768-mK
HA: 400-1000
HG: 1000

Product Usage Instructions

Safety Information

Before carrying out any repair work, ensure the compressor is
disconnected from the electricity network. Turn the main switch off
and secure it. Make sure there is no voltage, earth, and
short-circuit. Cover or cordon off neighboring live parts.

Disassembly

1. Ensure the compressor is depressurized before starting
work.

2. Drain the oil properly following environmental
regulations.

3. Remove the air guide hood (only for HA model).

4. Disconnect electrical connections carefully to avoid
damage.

5. Remove the case cover and handle the residual oil
carefully.

6. Remove the stator by taking appropriate safety measures.

Installation

Clean the inside of the case before installation. Make sure no
particles or dirt are present. Assemble following the reverse order
of disassembly steps. Pay attention to specific torques and
features.

Connect the stator to the motor housing, aligning parts
correctly and noting the direction of the feather key.

Frequently Asked Questions (FAQ)

Q: What precautions should be taken before starting repair work

on the electric motor?

A: Disconnect the compressor from the electricity network, turn
off the main switch, ensure no voltage, earth, and short-circuit,
and cover live parts.

Q: How should I dispose of the old oil from the

compressor?

A: Dispose of the old oil following environmental regulations
and national guidelines; do not dispose of it in domestic
waste.

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HA

Gußtoleranzen: Gewicht: (kg)
Tol.-Ang. DIN ISO 2768-mK
über 0.5 6 30 120 bis 6 30 120 400

400 1000

±0.1 ±0.2 ±0.3 ±0.5

Unbemaßte Radien: –

HG

Gußtoleranzen: Gewicht: (kg)
Tol.-Ang. DIN ISO 2768-mK
über 0.5 6 30 120 bis 6 30 120 400

1000

±0.1 ±0.2 ±0.3 ±0.5

Unbemaßte Radien: –

BOCK® HG12P/e, HG(HA)22P/e, HG(HA)34P/e
Service guide for electric motor

Translation of the original instructions

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Safety Information
Contents
1 Liability and Warranty ……………………………………………………………………………………………………….2 2 Additional Safety Information ……………………………………………………………………………………………2 3 Disassembly …………………………………………………………………………………………………………………….4 4 Installation ……………………………………………………………………………………………………………………….9
1 Liability and Warranty
Liability and the manufacturer’s warranty are excluded if · alterations and functional modifications have been carried out · original spare parts have not been used.
2 Safety Information
Target group for this repair information ¾ Work on the compressor may only be carried out by persons whose technical
training, skills and experience along with their knowledge of pertinent regulations and documentation means that they are capable of assessing the work to be carried out and detecting any possible dangers.
¾ A specialist can mean a refrigeration technician for example. Note that electrical
work must only be carried out by a qualified electrician. Alternatively, on a countryspecific basis, persons who have undergone electrotechnical instruction and who have proof of their qualification are also permitted to carry out the work.
· DANGER! This symbol refers to instructions for avoiding direct severe dangers to persons.
· DANGER! This symbol refers to instructions for avoiding direct severe dangers to persons or systems by electrical current.
· WARNING! This symbol is used to indicate that inaccurate compliance or total failure to comply with the instructions could cause injury to persons or damage to the compressor or refrigerating plant.
· This symbol is used to indicate that parts with refrigeration-maschine oils (for oil types see compressor name plate) should be moistened prior to installing.
· This symbol indicates the required tightening torque for the screw.

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Safety Information
Important prerequisites
DANGER
Risk of electric shock X Before you carry out any repair work, disconnect the compressor from the electricity
network. X Turn the main switch to “O” (OFF) and secure the main switch against an unauthorised
restart. X Before starting any work, ensure that there is no voltage, then earth and short-circuit. X Cover or cordon off neighboring live parts.
WARNING
The heavy weight of the compressor can be potentially dangerous.
Use all the seals included in the kit.

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Disassembly
3 Disassembly
WARNING
Ensure that the compressor is depressurised before starting work.
3.1 Draining the oil
NOTE
Do not dispose of oil in domestic waste. X Dispose of the old oil in accordance with the environmental regulations and observe
national regulations.

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3.2 Removing the air guide hood (only for HA)
4x

Disassembly

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Disassembly

3.3 Disconnecting the electrical connections
X Do not damage any cables and components. Damaged parts must be repaired or replaced immediately.
¾ Remove the terminal board and, if available, the PTC terminal board. ¾ Remove the fan (only for HA).

Up to design key 056

From design key 057

1 1

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© Danfoss | Climate Solutions | 2024.07

3.4 Removing case cover

Disassembly

WARNING
The heavy weight of the compressor and parts can potentially be dangerous; risk of falling, danger of crushing.

X ATTENTION! The residual oil flows out when the case cover is removed. Lay an absorbent material under the area and dispose of it in accordance with the environmental regulations.

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Disassembly
3.5 Removing the stator
WARNING
The heavy weight of the stator can potentially be dangerous; risk of falling, danger of crushing. X Take appropriate measures to provide a secure location for the stator. Prevent inadvertent
rolling.
¾ Remove the locking screw and the stator screw underneath it. ¾ Do not damage any cables or components. First remove the motor cables from the compressor
housing and then carefully pull out the stator.

F = max. 16 kg

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Disassembly
4 Installation
We recommend cleaning the inside of the case before the installation. There must not be any particles and dirt in the compressor. To assemble, reverse the order of the steps. Note any particular features such as observance of different torques.
4.1 Connecting the stator to the motor housing
WARNING
The heavy weight of the stator can potentially be dangerous; risk of falling, danger of crushing. X Note the direction of the feather key — stator.
You must align the parts in order to install them. X Do not damage any cables and components. Position the stator in the engine housing as far as it
will go.
¾ Screw in the stator screw. The hardening time of the thread coating is 6 hours. The stator screw
must only be used once.
¾ Screw in the locking screw.
F
1 25 Nm
2 3 Nm

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Installation
4.2 Installing the terminal board and PTC terminal board

X Slightly oil the new seals.
¾ Connect the electrical connections as per the illustration on page 11.

Up to design key 056
6 x SW 10
15 Nm

From design key 057
6 x SW 10
16 Nm

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Y / )

Y / )
4.3 Connecting the electrical connections to the terminal box

Installation

Terminal assignment on the terminal board up to design key 056

red white or blue
black

Cable harness (1)

Klemmbrett-Unterseite
UndeTresidremofintheatlerbmoinaalrbdoarudnderside
Planche à bornes – côté inférieur

WU1 ACHTUNG! Unbedingt auf richtigen

AnschlussAdTerTKEaNbTelIbOäNum! e achten!

WV22

CAMUaTkIOeNs! Puarye ptahratitcuyloaruauttesnetitohneto

correct connectitohne coanblethhearcnaesbslees!

heairllnezesimspeésr!ativement au

bon raccordement des faisceaux de câbles

red black white or blue

Cable harness (2)

V1

WU11

WV22

black black

U2

CAonnscnhelucstisofnürfoPrTCP-TFCühsleernsors Connection for PTC sensor Raccordement pour capteur PTC

Terminal assignment on the terminal board from design key 057

red white or blue
black

Cable harness (1)

Terminal board underside

ATTENTION! Make sure that you use the correct connection on the cable
harnesses!
red black white or blue

U1

V1

W1

W2 V2

black black

U2

Connection for PTC sensors

Cable harness (2)

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Installation
4.3 Installing the case cover

14 x SW 17
75 Nm

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Installation
4.4 Assembling and making the electrical connections ¾ Install the fan (only for HA). ¾ Install the electrical connection of the fan on the terminal box (only for HA). ¾ Fit the air guide hood (only for HA). ¾ Fit the cover on the terminal box.
X DANGER! Carry out the additional work steps such as “filling the oil” etc. in accordance with the operating manual. See the operating manual, in particular the “Start-up” chapter.
1
SW 5
15 Nm

2
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3 4x
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Dear customer, f you have any questions about installation, operation and accessories, please contact our technical service or your refrigerating system wholesaler or our representative.

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